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3,448 results on '"Oh, C."'

1. Intermittency analysis of $pp$ collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment

Author

Ong, Z., Agarwal, P., Ang, H. W., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

The method of horizontal scaled factorial moments as outlined by Bialas and Peschanski was used to conduct intermittency analysis for $pp$ collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment. The data was obtained and processed from the CERN Open Data Portal. It was found from 1D analysis that the intermittency strength decreases with increasing energy, indicating that the signature of the $\alpha$-model of random cascading that the former is based on seems to be weakening. Intermittency was stronger in 2D, but did not reveal any clear trend with increasing collision energy.

Published
2022

2. Multifractal behaviour in multiparticle production in $pp$ collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment

Author

Ong, Z., Agarwal, P., Ang, H. W., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract

Multifractal analysis was performed on $pp$ collision data at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment at CERN. The data was obtained and processed from the CERN Open Data Portal. Vertical analysis was used to compute the generalised dimensions $D_q$ and the multifractal spectra $f(\alpha)$ of the data, which reveals the level of complexity of its pseudorapidity distribution. It was found that the $f(\alpha)$ curves widen with increasing collision energy, signalling an increase in branching complexity.

Published
2022

3. Forward-backward multiplicity distribution with the Chou-Yang model for $pp$ collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment

Author

Ong, Z., Agarwal, P., Ang, H. W., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract

A Chou-Yang type multiplicity distribution comprising a total multiplicity component and a binomial asymmetry component is used to describe charged hadron multiplicity data at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS experiment at CERN. The data was obtained and processed from the CERN Open Data Portal. For the total multiplicity component, it was found that a convex sum of a Negative Binomial Distribution and a Furry-Yule Distribution is able to describe the shoulder-like structure characteristic of KNO scaling violation well. The mean cluster size produced from collisions was also found to increase with collision energy. A prediction is given for $pp$ collisions at $\sqrt{s}=$ 14 TeV.

Published
2022
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4. Intermittency in pp collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS collaboration

Author

Ong, Z., Agarwal, P., Ang, H. W., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract

The intermittency-type fluctuations as outlined by Bialas and Peschanski in the 1980s is analysed in $pp$ collisions at $\sqrt{s}=$ 0.9, 7 and 8 TeV from the CMS collaboration at CERN. Our preliminary analysis shows that the intermittency exponents in the bin-averaged scaled factorial moments decrease in magnitude with increasing collision energy at the TeV scale, which suggests that the cascading nature of multiparticle production described by the $\alpha$-model is weakening. We outline possible areas planned for future studies.

Published
2021

5. Oscillations in Modified Combinants of Hadronic Multiplicity Distributions

Author

Agarwal, P., Ang, H. W., Ong, Z., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology
Abstract

Oscillations in modified combinants ($C_j$s) have been of interest to multiparticle production mechanisms since the 1990s. Recently, there has been a discussion on how these oscillations can be reproduced by compounding a binomial distribution with a negative binomial distribution. In this work, we explore a stochastic branching model based on a simple interaction term $\lambda\overline{\psi}\phi\psi$ for partons and propose a hadronization scheme to arrive at the final multiplicity distribution. We study the effects that compounding our model with a binomial distribution has on $C_j$s and explore its physical implications. We find that there is a significant difference in the oscillations in $C_j$s between high energy $pp$ and $p\bar{p}$ scattering that our model can reproduce.

Published
2021

6. Numerical solutions to Giovannini's parton branching equation up to TeV energies at the LHC

Author

Ong, Z., Agarwal, P., Ang, H. W., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology
Abstract

Giovannini's parton branching equation is integrated numerically using the 4th-order Runge-Kutta method. Using a simple hadronisation model, a charged-hadron multiplicity distribution is obtained. This model is then fitted to various experimental data up to the TeV scale to study how the Giovannini parameters vary with collision energy and type. The model is able to describe hadronic collisions up to the TeV scale and reveals the emergence of gluonic activity as the centre-of-mass energy increases. A prediction is made for $\sqrt{s}$ = 14 TeV., Comment: 11 pages, 14 figures, 8 tables

Published
2020
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7. Effects of phase space variables on oscillations of modified combinants

Author

Ang, H. W., Ong, Z., Agarwal, P., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology
Abstract

It has been shown recently that additional information can be obtained from charged particle multiplicity distribution by investigating their modified combinants $C_j$, which exhibit periodic oscillatory behaviour. The modified combinants obtained from experimental data can be expressed in a recurrent form involving the probability of obtaining $N$ charged particles $P(N)$, scaled by the void probability $P(0)$. The effects of various experimental observables such as $|\eta|$, $p_T$ and centre-of-mass collision energy $\sqrt{s}$ on the oscillatory behaviour of $C_j$ will be discussed., Comment: 5 pages, 2 figures. Proceedings for the SSEAN 2019 Meeting

Published
2020

8. Quantum entanglement distribution with hybrid parity gate

Author

Mei, Feng, Yu, Ya-Fei, Feng, Xun-Li, Zhang, Zhi-Ming, and Oh, C. H.

Subjects
Quantum Physics
Abstract

We propose a scheme for entanglement distribution among different single atoms trapped in separated cavities. In our scheme, by reflecting an input coherent optical pulse from a cavity with a single trapped atom, a controlled phase-shift gate between the atom and the coherent optical pulse is achieved. Based on this gate and homodyne detection, we construct an $n$-qubit parity gate and show its use for distribution of a large class of entangled states in one shot, including the GHZ state $\left\vert GHZ_{n}\right\rangle $, W state $\left\vert W_{n}\right\rangle $, Dicke state $\left\vert D_{n,k}\right\rangle $ and certain sums of Dicke states $% \left\vert G_{n,k}\right\rangle $. We also show such distribution could be performed with high success probability and high fidelity even in the presence of channel loss., Comment: 8 pages, 6 figures

Published
2019
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9. Probing Bayesian credible regions intrinsically: a feasible error certification for physical systems

Author

Oh, C., Teo, Y. S., and Jeong, H.

Subjects
Quantum Physics
Abstract

Computing size and credibility of Bayesian credible regions for certifying the reliability of any point estimator of an unknown parameter (such as a quantum state, channel, phase, \emph{etc.}) relies on rejection sampling from the entire parameter space that is practically infeasible for large datasets. We reformulate the Bayesian credible-region theory to show that both properties can be obtained solely from the average of log-likelihood over the region itself, which is computable with direct region sampling. Neither rejection sampling nor any geometrical knowledge about the whole parameter space is necessary, so that general error certification now becomes feasible. We take this region-average theory to the next level by generalizing size to the average $l_p$-norm distance $(p>0)$ between a random region point and the estimator, and present analytical formulas for $p=2$ to estimate distance-induced size and credibility for any physical system and large datasets, thus implying that asymptotic Bayesian error certification is possible without any Monte~Carlo computation. All results are discussed in the context of quantum-state tomography., Comment: 6 pages, 5 figures, new discussion on correlations, a more general Monte Carlo algorithm for arbitrary prior distributions, and high-dimensional plots

Published
2019
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10. Efficient Bayesian credible-region certification for quantum-state tomography

Author

Oh, C., Teo, Y. S., and Jeong, H.

Subjects
Quantum Physics
Abstract

Standard Bayesian credible-region theory for constructing an error region on the unique estimator of an unknown state in general quantum-state tomography to calculate its size and credibility relies on heavy Monte~Carlo sampling of the state space followed by sample rejection. This conventional method typically gives negligible yield for very small error regions originating from large datasets. We propose an operational reformulated theory to compute both size and credibility from region-average quantities that in principle convey information about behavior of these two properties as the credible-region changes. We next suggest the accelerated hit-and-run Monte~Carlo sampling, customized to the construction of Bayesian error-regions, to efficiently compute region-average quantities, and provide its complexity estimates for quantum states. Finally by understanding size as the region-average distance between two states in the region (measured for instance with either the Hilbert-Schmidt, trace-class or Bures distance), we derive approximation formulas to analytically estimate both distance-induced size and credibility under the pseudo-Bloch parametrization without resorting to any Monte~Carlo computation., Comment: 18 pages, 15 figures, new discussion on correlations, a more general Monte Carlo algorithm for arbitrary prior distributions, and high-dimensional plots

Published
2019
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11. Infective endocarditis in adult patients with congenital heart disease

Author

Habib, Gilbert, Lancellotti, Patrizio, Cosyns, Bernard, Donal, Erwan, Erba, Paola, Iung, Bernard, Maggioni, Aldo P., Popescu, Bogdan A., Prendergast, Bernard, Tornos, Pilar, Tatar-Chentir, Nora Nabila Ali, Al-Mallah, Mouaz, Aneq, Meriam Astrom, Athanassopoulos, George, Badano, Luigi Paolo, Benyoussef, Soraya, Aranda, Erick Calderon, Cardim, Nuno Miguel, Chan, Kwan-Leung, Cruz, Ines, Edvardsen, Thor, Goliasch, Georg, Hagendorff, Andreas, Hristova, Krasimira, Kamp, Otto, Kang, Duk-Hyun, Kong, William, Matskeplishvili, Simon, Meshaal, Marwa, Mirocevic, Maja, Neskovic, Aleksandar N., Pazdernik, Michal, Plonska-Gosciniak, Edyta, Raissouni, Maha, Ronderos, Ricardo, Sade, Leyla Elif, Sadeghpour, Anita, Sambola, Antonia, Sengupta, Shantanu, Separovic-Hanzevacki, Jadranka, Takeuchi, Masaaki, Tucay, Edwin, Rodrigues, Ana Clara Tude, Varga, Albert, Vaskelyte, Jolanta, Yamagata, Kentaro, Yiangou, Kyriakos, Zaky, Hosam, Ronderos, R., Avegliano, G., Oses, P. Fernandez, Filipini, E., Granada, I., Iribarren, A., Mahia, M., Nacinovich, F., Ressi, S., Obregon, R., Bangher, M., Dho, J., Cartasegna, L., Plastino, M.L., Novas, V., Shigel, C., Reyes, G., De Santos, M., Gastaldello, N., Fernandez, M. Granillo, Potito, M., Streitenberger, G., Velazco, P., Casabé, J.H., Cortes, C., Guevara, E., Salmo, F., Seijo, M., Weidinger, F., Heger, M., Brooks, R., Stöllberger, C., Ho, C.-Y., Perschy, L., Puskas, L., Goliasch, G., Binder, C., Rosenhek, R., Schneider, M., Winter, M.-P., Hoffer, E., Melissopoulou, M., Lecoq, E., Legrand, D., Jacquet, S., Massoz, M., Lancellotti, P., Pierard, L., Dulgheru, R., Marchetta, S., D'Emal, C., Oury, C., Cosyns, B., Droogmans, S., Kerkhove, D., Motoc, A., Plein, D., Roosens, B., Soens, L., Weytjens, C., Lemoine, I., Rodrigus, I., Paelinck, B., Amsel, B., Unger, P., Konopnicki, D., Beauloye, C., Pasquet, A., Pierard, S., Vancraeynest, D., Vanoverschelde, J.L., Sinnaeve, F., Andrade, J.L., Rodrigues, A.C. Tude, Staszko, K., Monteiro, R. Dos Santos, Miglioranza, M.H., Shuha, D.L., Alcantara, M., Cravo, V., Fazzio, L., Felix, A., Iso, M., Musa, C., Siciliano, A.P., Filho, F. Villaca, Braga, J., Rodrigues, A., Silva, R., Vilela, F., Rodrigues, D., Silva, L., Morhy, S., Fischer, C., Vieira, M., Afonso, T., Abreu, J., Falcao, S.N., Moises, V., Gouvea, A., João, G., Mancuso, F., Silva, C., Souza, A.C., Abboud, C.S., de Mattos Barretto, R. Bellio, Ramos, A., Arnoni, R., Assef, J.E., Togna, D.J. Della, Le Bihan, D., Miglioli, L., Oliveira, A.P. Romero, Kroll, R. Tadeu Magro, Cortez, D., Gelape, C.L., Nunes, M.d.C. Peirira, Ferrari, T.C. De Abreu, Chan, K.-L., Hay, K., Le, V., Page, M., Poulin, F., Sauve, C., Serri, K., Mercure, C., Beaudoin, J., Pibarot, P., Sebag, I., Rudski, L., Ricafort, G., Barsic, B., Krajinovic, V., Vargovic, M., Separovic-Hanzevacki, J., Lovric, D., Reskovic-Luksic, V., Vincelj, J., Jurinjak, S. Jaksic, Yiannikourides, V., Ioannides, M., Kyriakou, C., Pofaides, C., Masoura, V., Yiangou, K., Pudich, J., Linhart, A., Siranec, M., Marek, J., Blechova, K., Kamenik, M., Pazdernik, M., Pelouch, R., Coufal, Z., Mikulica, M., Griva, M., Jancova, E., Mikulcova, M., Taborsky, M., Precek, J., Jecmenova, M., Latal, J., Widimsky, J., Butta, T., Machacek, S., Vancata, R., Spinar, J., Holicka, M., Long, F. Pow Chon, Anzules, N., Carpio, A. Bajana, Largacha, G., Penaherrera, E., Moreira, D., Mahfouz, E., Elsafty, E., Soliman, A., Zayed, Y., Aboulenein, J., Abdel-Hay, M., Almaghraby, A., Abdelnaby, M., Ahmed, M., Hammad, B., Saleh, Y., Zahran, H., Elgebaly, O., Saad, A., Ali, M., Zeid, A., El Sharkawy, R., Meshaal, M., Al Kholy, A., Doss, R., Osama, D., Rizk, H., Elmogy, A., Mishriky, M., Assayag, P., El Hatimi, S., Botelho-Nevers, E., Campisi, S., Fuzellier, J.-F., Gagneux-Brunon, A., Pierrard, R., Tulane, C., Detoc, M., Mehalla, T., Boutoille, D., Al Habash, O., Asseray-Madani, N., Biron, C., Brochard, J., Caillon, J., Cueff, C., Le Tourneau, T., Lecompte, A.S., Lecomte, R., Lefebvre, M., Michel, M.M. Magali, Pattier, S., Delarue, S., Le Bras, M., Orain, J., Faucher, J.-F., Aboyans, V., Beeharry, A., Durox, H., Lacoste, M., Magne, J., Mohty, D., David, A., Pradel, V., Sierra, V., Neykova, A., Bettayeb, B., Elkentaoui, S., Tzvetkov, B., Landry, G., Strady, C., Ainine, K., Baumard, S., Brasselet, C., Tassigny, C., Valente-Pires, V., Lefranc, M., Hoen, B., Lefevre, B., Curlier, E., Callier, C., Fourcade, N., Jobic, Y., Ansard, S., Le Berre, R., Le Roux, P., Le Ven, F., Pouliquen, M.-C., Prat, G., Bouchart, F., Savoure, A., Alarcon, C., Chapuzet, C., Gueit, I., Tribouilloy, C., Bohbot, Y., Peugnet, F., Gun, M., Iung, B., Duval, X., Lescure, X., Ilic-Habensus, E., Sadoul, N., Selton-Suty, C., Alla, F., Chevalier, E., Goehringer, F., Huttin, O., Garcia, R., Le Marcis, V., Tattevin, P., Donal, E., Flecher, E., Revest, M., Habib, G., Hubert, S., Casalta, J.-P., Gouriet, F., Arregle, F., Cammilleri, S., Tessonnier, L., Riberi, A., Chirouze, C., Bouiller, K., Brunel, A.-S., Fournier, D., Hustache-Mathieu, L., Klopfenstein, T., Moreau, J., Lim, P., Oliver, L., Ternacle, J., Moussafeur, A., Chavanet, P., Piroth, L., Buisson, M., Mahy, S., Martins, C., Salmon-Rousseau, A., Gohier, S., Piper, C., Börgermann, J., Guckel, D., Horstkotte, D., Brockmeier, B., Winkelmann, E., Hagendorff, A., Grey, D., Nickenig, G., Schueler, R., Öztürk, C., Stöhr, E., Hamm, C., Walther, T., Brandt, R., Frühauf, A.-C., Hartung, C.T., Hellner, C., Wild, C., Becker, M., Hamada, S., Kaestner, W., Stangl, K., Knebel, F., Baldenhofer, G., Brecht, A., Dreger, H., Isner, C., Pfafflin, F., Stegemann, M., Zahn, R., Fraiture, B., Kilkowski, C., Karcher, A.-K., Klinger, S., Tolksdorf, H., Tousoulis, D., Aggeli, C., Sarri, G., Sideris, S., Venieri, E., Athanassopoulos, G., Tsiapras, D., Armenis, I., Koutsiari, A., Floros, G., Grassos, C., Dragasis, S., Rallidis, L., Varlamos, C., Michalis, L., Naka, K., Bechlioulis, A., Kotsia, A., Lakkas, L., Pappas, K., Papadopoulos, C., Kiokas, S., Lioni, A., Misailidou, S., Barbetseas, J., Bonou, M., Kapelios, C., Tomprou, I., Zerva, K., Manolis, A., Hamodraka, E., Athanasiou, D., Haralambidis, G., Poulimenos, L., Samaras, H., Nagy, A., Bartykowszki, A., Gara, E., Sengupta, S., Mungulmare, K., Kasliwal, R., Bansal, M., Bhan, A., Ranjan, S., Kyavar, M., Maleki, M., Bezanjani, F. Noohi, Sadeghpour, A., Alizadehasl, A., Boudagh, S., Ghavidel, A., Moradnejad, P., Pasha, H.R., Ghadrdoost, B., Gilon, D., Strahilevitz, J., Israel, S., Wanounou, M., d'Agostino, C., Colonna, P., De Michele, L., Fumarola, F., Stante, M., Marchionni, N., Scheggi, V., Alterini, B., Del Pace, S., Stefano, P., Sparano, C., Badano, L.P., Muraru, D., Ruozi, N., Tenaglia, R., Limbruno, U., Cresti, A., Baratta, P., Solari, M., Giannattasio, C., Moreo, A., De Chiara, B., Montero, B. Lopez, Musca, F., Orcese, C.A., Panzeri, F., Russo, C.F., Spano, F., Alfieri, O., De Bonis, M., Agricola, E., Busnardo, E., Carletti, S., Castiglioni, B., Chiappetta, S., Del Forno, B., Ferrara, D., Guffanti, M., Iaci, G., Lapenna, E., Nisi, T., Oltolini, C., Pajoro, U., Pasciuta, R., Ripa, M., Scarpellini, P., Din, C. Tassan, Meneghin, R., Schiavi, D., Piscione, F., Citro, R., Benvenga, R.M., Greco, L., Prota, C., Radano, I., Soriente, L., Bellino, M., Di Vece, D., Santini, F., Salsano, A., Olivieri, G.M., Turrini, F., Messora, R., Tondi, S., Olaru, A., Agnoletto, V., Grassi, L., Leonardi, C., Sansoni, S., Del Ponte, S., Dato, G.M. Actis, De Martino, A., Ohte, N., Kikuchi, S., Wakami, K., Aonuma, K., Seo, Y., Ishizu, T., Machino-Ohtsuka, T., Yamamoto, M., Iida, N., Nakajima, H., Nakagawa, Y., Izumi, C., Amano, M., Miyake, M., Takahashi, K., Shiojima, I., Miyasaka, Y., Maeba, H., Suwa, Y., Taniguchi, N., Tsujimoto, S., Kitai, T., Ota, M., Yuda, S., Sasaki, S., Hagiwara, N., Yamazaki, K., Ashihara, K., Arai, K., Saitou, C., Saitou, S., Suzuki, G., Shibata, Y., Watanabe, N., Nishino, S., Ashikaga, K., Kuriyama, N., Mahara, K., Abe, K., Fujimaki, H., Okubo, T., Shitan, H., Takanashi, S., Terada, M., Yamamoto, H., Sata, M., Yamada, H., Kusunose, K., Saijo, Y., Seno, H., Yuichiro, O., Sakata, Y., Mizuno, H., Nakatani, S., Onishi, T., Sengoku, K., Sera, F., Park, S.W., Kyoung, K. Eun, Yeon, L. Ga, Hwang, J.-W., Jin-Oh, C., Park, S.-J., Sang-Chol, L., Sung-A, C., Jang, S.Y., Kang, D.-H., Heo, R., Lee, S., Song, J.-M., Jung, E., Plisiene, J., Dambrauskaite, A., Gruodyte, G., Jonkaitiene, R., Vaskelyte, J., Mizariene, V., Atkocaityte, J., Zvirblyte, R., Sow, R., Codreanu, A., De la Vega, E.C.L., Michaux, C., Staub, T., Jacobs-Orazi, L., Azzopardi, C. Mallia, Xuereb, R.G., Piscopo, T., Borg, D., Casha, R., Farrugia, J., Fenech, M., Pllaha, E., Vella, C., Yamagata, K., Grib, L., Raevschi, E., Grejdieru, A., Balan, G., Cardaniuc, I., Cardaniuc, L., Corcea, V., Feodorovici, A., Gaina, V., Girbu, L., Jimbei, P., Kravcenco, D., Panfile, E., Prisacari, E., Samohvalov, E., Samohvalov, S., Sceglova, N., Benesco, I., Marian, V., Sumarga, N., Mirocevic, M., Bozovic, B., Bulatovic, N., Lakovic, P., Music, L., Roos-Hesselink, J., Budde, R., Gamela, T., Wahadat, A., Kamp, O., Meijers, T., Van Melle, J.P., Deursen, V.M., Crijns, H., Bekkers, S., Cheriex, E., Gilbers, M., Kietselaer, B., Knackstedt, C., Lorusso, R., Schalla, S., Streukens, S., Chamuleau, S., Cramer, M.-J., Teske, A., Van der Spoel, T., Wind, A., Liesbek, O., Lokhorst, J., Van Heusden, H., Tanis, W., Van der Bilt, I., Vriend, J., Bruggen, H. De Lange-van, Karijodikoro, E., Riezebos, R., van Dongen, E., Schoep, J., Stolk, V., Axler, O., Baumann, F., Lebras, S., Edvardsen, T., Offstad, J.T., Beitnes, J.O., Helle-Valle, T., Skulstad, H., Skardal, R., Qamar, N., Furnaz, S., Ahmed, B., Butt, M.H., Khanzada, M.F., Saghir, T., Wahid, A., Hryniewiecki, T., Szymanski, P., Marzec, K., Misztal-Ogonowska, M., Kosmala, W., Przewlocka-Kosmala, M., Rojek, A., Woznicka, K., Zachwyc, J., Lisowska, A., Kaminska, M., Kasprzak, J., Kowalczyk, E., Strzecka, D.F., Wejner-Mik, P., Trabulo, M., Freitas, P., Ranchordas, S., Rodrigues, G., Pinto, P., Queiros, C., Azevedo, J., Marques, L., Seabra, D., Branco, L., Cruz, M., Galrinho, A., Moreira, R., Rio, P., Timoteo, A.T., Selas, M., Cardim, N.M., Carmelo, V., Neves, B. Duque, Pereira, H., Cruz, I., Guerra, A., Marques, A., Pintassilgo, I., Tomescu, M.C., Trofenciuc, N.-M., Andor, M., Bordejevic, A., Branea, H.S., Caruntu, F., Cirin, L., Citu, I.M., Cotoraci, C.A., Darabantiu, D., Farcas, R., Marincu, I., Mavrea, A., Onel, M.F., Parvanescu, T., Pop, D., Pop-Moldovan, A.L., Puticiu, M.I., Velcean, L.A., Ionac, A., Cozma, D., Mornos, C., Goanta, F., Popescu, I., Beyer, R., Mada, R., Rancea, R., Rosianu, H., Tomoaia, R., Stanescu, C., Kobalava, Z., Karaulova, J., Kotova, E., Milto, A., Pisaryuk, A., Povalyaev, N., Sorokina, M., Alrahimi, J., Elshiekh, A., Jamiel, A., Ahmed, A., Al-Mallah, M., Attia, N., Putnikovic, B., Neskovic, A., Dimic, A., Ivanovic, B., Matic, S., Trifunovic, D., Petrovic, J., Kosevic, D., Dabic, P., Milojevic, P., Petrovic, I., Stojanovic, I., Srdanovic, I., Kovacevic, M., Redzek, A., Stefanovic, M., Susak, S., Velicki, L., Vulin, A., Yeo, T.C., Kong, W.K.F., Poh, K.K., Vilacosta, I., El-Nasser, M. Abd, Ferrera, C., Olmos, C., Iglesias, F. Calvo, Blanco-Gonzalez, E., Amaro, M. Bravo, Germinas, A.N., Lopez-Rodriguez, E., Adan, J. Lugo, Pazos-Lopez, P., Loureiro, M. Pereira, Perez, M.T., Raposeiras-Roubin, S., Yas, S. Rasheed, Suarez-Varela, M.-M., Vidal, F. Vasallo, Garcia-Dorado, D., Sambola, A., Fernandez-Hidalgo, N., Gonzalez-Alujas, T., Lozano, J., Maisterra, O., Pizzi, N., Rios, R., Tornos, P., Bayes-Genis, A., Botet, L. Pedro, Vallejo, N., Berastegui, E., Llibre, C., Mateu, L., Nunez, R., Quesada, D., Portell, D. Bosch, Vinas, J. Aboal, Bertran, X. Albert, Tarradellas, R. Brugada, Ricon, P. Loma-Osorio, de Llano, C. Tiron, Arnau, M.A., Bel, A., Blanes, M., Osa, A., Anguita, M., Carrasco, F., Castillo, J., Zamorano, J.L., Mur, J.L. Moya, Alvaro, M., Fernandez-Golfin, C., Monteagudo, J.M., Elorza, E. Navas, Alvarez, M.C. Farinas, Balbin, J. Aguero, Arminanzas, C., de las Revillas, F. Arnaiz, Garcia, A. Arnaiz, Belaustegui, M. Cobo, Sampedro, M. Fernandez, Cuadra, M. Gutierrez, Gutierrez-Diez, J.F., Zarauza, J., Cuello, L. Garcia, Rico, C. Gonzalez, Rodriguez-Alvarez, R., Goikoetxea, J., Montejo, M., Miro, J., Almela, M., Ambrosioni, J., Falces, C., Fuster, D., Garcia-de-la-Maria, C., Hernandez-Meneses, M., Llopis, J., Marco, F., Moreno, A., Quintana, E., Sandoval, E., Tellez, A., Tolosana, J.M., Vidal, B., Ruiz-Zamora, I., Ruiz, A. Bardaji, Girgas, E. Sanz, Garcia-Pardo, G., Marzo, M. Guillen, Oviedo, A. Rodriguez, Jimenez, A. Villares, Abid, L., Hammami, R., Kammoun, S., Mourali, M.S., Zghal, F. Mghaieth, Hlima, M. Ben, Boudiche, S., Ouali, S., Zakhama, L., Antit, S., Slama, I., Gulel, O., Sahin, M., Sade, L.E., Karacaglar, E., Kucukoglu, S., Cetinarslan, O., Yasar, U.S., Canpolat, U., Mutlu, B., Atas, H., Dervishova, R., Ileri, C., Zaky, H., Alhashmi, J., Baslib, F., Tahir, J., Zarger, P., Woldman, S., Menezes, L., Primus, C., Uppal, R., Bvekerwa, I., Chandrasekaran, B., Kopanska, A., Prendergast, B., Cannata, S., Chambers, J., Hancock, J., Klein, J., Rajani, R., Ursi, M.P., Dworakowski, R., Fife, A., Breeze, J., Browne-Morgan, M., Gunning, M., Streather, S., Asch, F., Zemedkun, M., Alyavi, B., Uzokov, J., van Melle, Joost P., Roos-Hesselink, Jolien W., Bansal, Manish, Pudich, Jiri, Luksic, Vlatka Reskovic, Rodriguez-Alvarez, Regino, Hanzevacki, Jadranka Separovic, Sow, Rouguiatou, Timóteo, Ana Teresa, Morgado, Marisa Trabulo, De Bonis, Michele, Laroche, Cecile, and Boersma, Eric

Published
2023
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12. A classical limit of Grover's algorithm induced by dephasing: Coherence vs entanglement

Author

Fujikawa, Kazuo, Oh, C. H., and Umetsu, Koichiro

Subjects
Quantum Physics
Abstract

A new approach to the classical limit of Grover's algorithm is discussed by assuming a very rapid dephasing of a system between consecutive Grover's unitary operations, which drives pure quantum states to decohered mixed states. One can identify a specific element among $N$ unsorted elements by a probability of the order of unity after $k\sim N$ steps of classical amplification, which is realized by a combination of Grover's unitary operation and rapid dephasing, in contrast to $k\sim \pi \sqrt{N}/4$ steps in quantum mechanical amplification. The initial two-state system with enormously unbalanced existence probabilities, which is realized by a chosen specific state and a superposition of all the rest of states among $N$ unsorted states, is crucial in the present analysis of classical amplification. This analysis illustrates Grover's algorithm in extremely noisy circumstances. A similar increase from $k\sim \sqrt{N}$ to $k\sim N$ steps due to the loss of quantum coherence takes place in the {\em analog} model of Farhi and Gutmann where the entanglement does not play an obvious role. This supports a view that entanglement is crucial in quantum computation to describe quantum states by a set of qubits, but the actual speedup of the quantum computation is based on quantum coherence., Comment: 15 pages. Substantially modified with an additional author and the change of the title. This version is going to be published in Mod. Phys. Lett. A

Published
2018
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13. Genuine multipartite nonlocality in the one-dimensional ferromagnetic spin-1/2 chain

Author

Dai, Yue, Zhang, Chengjie, You, Wenlong, Dong, Yuli, and Oh, C. H.

Subjects
Quantum Physics
Abstract

Genuine multipartite entanglement has been found in some spin chain systems. However, genuine multipartite nonlocality, which is much rarer than genuine multipartite entanglement, has never been found in any spin chain system. Here we present genuine multipartite nonlocality in a spin chain system. After introducing the definition of genuine multipartite nonlocality and a multipartite Bell-type inequality, we construct a group of joint measurements for the inequality in a one-dimensional ferromagnetic $N$-qubit chain with nearest-neighbor XXZ interaction, and many violations to the inequality have been found. The violations do indicate that genuine multipartite nonlocality exists in this ferromagnetic spin-1/2 chain system. Last but not least, we also calculate genuine multipartite entanglement concurrence in the same spin chain to demonstrate the difference and relationship between genuine multipartite nonlocality and genuine multipartite entanglement., Comment: 7 pages, 5 figures

Published
2018
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17. Ionic vibration induced transparency and Autler-Townes splitting

Author

Shao, Wenjun, Wang, Fei, Feng, Xun-Li, and Oh, C. H.

Subjects
Quantum Physics
Abstract

In this work, the absorption spectrum of a two-level ion in a linear Paul trap is investigated, the ion is supposed to be driven by two orthogonal laser beams, the one along the axial of the trap acts as the control light beam, the other as probe beam. When the frequency of the control laser is tuned to the first red sideband of the ionic transition, the coupling between the internal states of the ion and vibrational mode turns out to be a Jaynes-Cummings (JC) Hamiltonian, which together with the coupling between the probe beam and the two-level ion constructs a {\Lambda}-type three-level structure. In this case the transparency window may appear in the absorption spectrum of the probe light, which is induced by the ionic vibration and is very similar to the cavity induced transparency [1996 Opt. Commun. 126 230-235]. On the other hand, when the frequency of the control laser is tuned to the first blue sideband of the ionic transition, the two-level ion and vibrational mode are governed by an anti-Jaynes-Cummings (anti-JC) Hamiltonian, the total system including the probe beam forms a V -type threelevel structure. And the Autler-Townes splitting in the absorption spectrum is found., Comment: 6 pages, 3 figures, accepted for publication by Laser Physics Letters

Published
2017
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21. Functional Outcomes from a Phase II Trial of Adaptive Deescalation of Radiation Therapy Dose in p16+ Oropharyngeal Cancer Patients Demonstrating Favorable Mid-treatment Nodal Response

Author

Hung, C., primary, Kim, J.K., additional, Mojica, J., additional, Parody, S., additional, Seo, J.Y., additional, Tam, M., additional, Oh, C., additional, Concert, C.M., additional, Vaezi, A.E., additional, Li, Z., additional, Tran, T., additional, Feron-Rigodon, M., additional, Givi, B., additional, Jacobson, A., additional, Persky, M., additional, Harrison, L.B., additional, Duvvuri, U., additional, and Hu, K.S., additional

Published
2024
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23. Hierarchy of multipartite nonlocality in the nonsignaling scenario

Author

Wang, Xiaoxu, Zhang, Chengjie, Chen, Qing, Yu, Sixia, Yuan, Haidong, and Oh, C. H.

Subjects
Quantum Physics
Abstract

We propose a hierarchy of Bell-type inequalities for arbitrary $n$-partite systems that identify the different degrees of nonlocality ranging from standard to genuine multipartite nonlocality. After introducing the definition of nonsignaling $m$-locality, we show that the observed joint probabilities in any nonsignaling $m$-local realistic models should satisfy the $(m-1)$-th Bell-type inequality. When $m=2$ the corresponding inequality reduces to the one shown in [Phys. Rev. Lett. 112, 140404 (2014)] whose violation indicates genuine multipartite nonlocality, and when $m=n$ the corresponding inequality is just Hardy's inequality whose violation indicates standard multipartite nonlocality. Furthermore, several examples are provided to demonstrate their hierarchy of multipartite nonlocality., Comment: 6 pages

Published
2016
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24. Exact algebraic separability criterion for two-qubit systems

Author

Fujikawa, Kazuo and Oh, C. H.

Subjects
Quantum Physics
Abstract

A conceptually simpler proof of the separability criterion for two-qubit systems, which is referred to as "Hefei inequality" in literature, is presented. This inequality gives a necessary and sufficient separability criterion for any mixed two-qubit system unlike the Bell-CHSH inequality that cannot test the mixed-states such as the Werner state when regarded as a separability criterion. The original derivation of this inequality emphasized the uncertainty relation of complementary observables, but we show that the uncertainty relation does not play any role in the actual derivation and the Peres-Hodrodecki condition is solely responsible for the inequality. Our derivation, which contains technically novel aspects such as an analogy to the Dirac equation, sheds light on this inequality and on the fundamental issue to what extent the uncertainty relation can provide a test of entanglement. This separability criterion is illustrated for an exact treatment of the Werner state., Comment: 7 pages. The presentation up-dated and made more precise

Published
2016
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25. Separability criteria with angular and Hilbert space averages

Author

Fujikawa, Kazuo, Oh, C. H., Umetsu, Koichiro, and Yu, Sixia

Subjects
Quantum Physics
Abstract

The practically useful criteria of separable states $\rho=\sum_{k}w_{k}\rho_{k}$ in $d=2\times2$ are discussed. The equality $G({\bf a},{\bf b})= 4[\langle \psi|P({\bf a})\otimes P({\bf b})|\psi\rangle-\langle \psi|P({\bf a})\otimes{\bf 1}|\psi\rangle\langle \psi|{\bf 1}\otimes P({\bf b})|\psi\rangle]=0$ for any two projection operators $P({\bf a})$ and $P({\bf b})$ provides a necessary and sufficient separability criterion in the case of a separable pure state $\rho=|\psi\rangle\langle\psi|$. We propose the separability criteria of mixed states, which are given by ${\rm Tr}\rho\{{\bf a}\cdot {\bf \sigma}\otimes {\bf b}\cdot {\bf \sigma}\}=(1/3)C\cos\varphi$ for two spin $1/2$ systems and $4{\rm Tr}\rho \{P({\bf a})\otimes P({\bf b})\}=1+(1/2)C\cos2\varphi$ for two photon systems, respectively, after taking a geometrical angular average of ${\bf a}$ and ${\bf b}$ with fixed $\cos\varphi={\bf a}\cdot{\bf b}$. Here $-1\leq C\leq 1$, and the difference in the numerical coefficients $1/2$ and $1/3$ arises from the different rotational properties of the spinor and the transverse photon. If one instead takes an average over the states in the $d=2$ Hilbert space, the criterion for two photon systems is replaced by $4{\rm Tr}\rho \{P({\bf a})\otimes P({\bf b})\}=1+(1/3)C\cos2\varphi$. Those separability criteria are shown to be very efficient using the existing experimental data of Aspect et al. in 1981 and Sakai et al. in 2006. When the Werner state is applied to two photon systems, it is shown that the Hilbert space average can judge its inseparability but not the geometrical angular average., Comment: 14 pages, 3 figures

Published
2016
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26. Probing quantum grav ity effects with ion trap

Author

Chen, Yue-Yue, Feng, Xun-Li, Oh, C. H., and Xu, Zhi-Zhan

Subjects
Quantum Physics
Abstract

The existence of minimal length scale has motivated the proposal of generalized uncertainty principle, which provides a potential routine to probe quantum gravitational effects in low-energy quantum mechanics experiment. Hitherto, the tabletop experiment of testing deviations from ordinary quantum mechanics are mostly based on microscopic objects. However, the feasibility of these studies are challenged by the recent study of spacetime quantization for composite macroscopic body. In this paper, we propose a scheme to probe quantum gravity effects by revealing the deviations from predictions of Heisenberg uncertainty principle. Our scheme focus on manipulating the interaction sequences between external laser fields and a single trapped ion to seek evidence of spacetime quantization, therefore reduce the complicity induced by large bodies to some extent. The relevant study for microscopic particles is crucial considering the lack of satisfactory theories regarding basic properties for multi-particles in the framework of quantum gravity. Meanwhile, we are managed to set a new upper limit for deformation parameter.

Published
2016

27. A family of nonlocal bound entangled states

Author

Yu, Sixia and Oh, C. H.

Subjects
Quantum Physics
Abstract

Bound entanglement, being entangled yet not distillable, is essential to our understandings of the relations between nonlocality and entanglement besides its applications in certain quantum information tasks. Recently, bound entangled states that violate a Bell inequality have been constructed for a two-qutrit system, disproving a conjecture by Peres that bound entanglement is local. Here we shall construct such kind of nonlocal bound entangled states for all finite dimensions larger than two, making possible their experimental demonstrations on most general systems. We propose a Bell inequality, based on a Hardy-type argument for nonlocality, and a steering inequality to identify their nonlocality. We also provide a family of entanglement witnesses to detect their entanglement beyond the Bell inequality and the steering inequality., Comment: 9 Pages, 2 Tables + 3 Figures

Published
2015
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28. Effect of weak measurement on entanglement distribution over noisy channels

Author

Wang, Xin-Wen, Yu, Sixia, Zhang, Deng-Yu, and Oh, C. H.

Subjects
Quantum Physics
Abstract

Being able to implement effective entanglement distribution in noisy environments is a key step towards practical quantum communication, and long-term efforts have been made on the development of it. Recently, it has been found that the null-result weak measurement (NRWM) can be used to enhance probabilistically the entanglement of a single copy of amplitude-damped entangled state. This paper investigates remote distributions of bipartite and multipartite entangled states in the amplitudedamping environment by combining NRWMs and entanglement distillation protocols (EDPs). We show that the NRWM has no positive effect on the distribution of bipartite maximally entangled states and multipartite Greenberger-Horne-Zeilinger states, although it is able to increase the amount of entanglement of each source state (noisy entangled state) of EDPs with a certain probability. However, we find that the NRWM would contribute to remote distributions of multipartite W states. We demonstrate that the NRWM can not only reduce the fidelity thresholds for distillability of decohered W states, but also raise the distillation efficiencies of W states. Our results suggest a new idea for quantifying the ability of a local filtering operation in protecting entanglement from decoherence., Comment: 15 pages, 9 figures. Minor revision has been made

Published
2015
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29. Evaluation of entanglement measures by a single observable

Author

Zhang, Chengjie, Yu, Sixia, Chen, Qing, Yuan, Haidong, and Oh, C. H.

Subjects
Quantum Physics
Abstract

We present observable lower bounds for several bipartite entanglement measures including entanglement of formation, geometric measure of entanglement, concurrence, convex-roof extended negativity, and G-concurrence. The lower bounds facilitate estimates of these entanglement measures for arbitrary finite-dimensional bipartite states. Moreover, these lower bounds can be calculated analytically from the expectation value of a single observable. Based on our results, we use several real experimental measurement data to get lower bounds of entanglement measures for these experimentally realized states. In addition, we also study the relations between entanglement measures., Comment: 10 pages, 4 figures

Published
2015
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30. Phase transition of light in circuit QED lattices coupled to nitrogen-vacancy centers in diamond

Author

You, Jia-Bin, Yang, W. L., Xu, Zhen-Yu, Chan, A. H., and Oh, C. H.

Subjects
Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons
Abstract

We propose a hybrid quantum architecture for engineering a photonicMott insulator-superfluid phase transition in a two-dimensional (2D) square lattice of a superconducting transmission line resonator (TLR) coupled to a single nitrogen-vacancy (NV) center encircled by a persistent current qubit. The localization-delocalization transition results from the interplay between the on-site repulsion and the nonlocal tunneling. The phase boundary in the case of photon hopping with real-valued and complex-valued amplitudes can be obtained using the mean-field approach. Also, the quantum jump technique is employed to describe the phase diagram when the dissipative effects are considered. The unique feature of our architecture is the good tunability of effective on-site repulsion and photon-hopping rate, and the local statistical property of TLRs which can be analyzed readily using presentmicrowave techniques. Our work opens new perspectives in quantum simulation of condensed-matter and many-body physics using a hybrid spin circuit-QED system. The experimental challenges are realizable using currently available technologies.

Published
2015

31. Detecting the local indistinguishability of maximally entangled states

Author

Yu, Sixia and Oh, C. H.

Subjects
Quantum Physics
Abstract

By incorporating the asymmetry of local protocols, i.e., some party has to start with a nontrivial measurement, into an operational method of detecting the local indistinguishability proposed by Horodecki {\it et al.} [Phys.Rev.Lett. 90 047902 (2003)], we derive a computable criterion to efficiently detect the local indistinguishability of maximally entangled states. Locally indistinguishable sets of $d$ maximally entangled states in a $d\otimes d$ system are systematically constructed for all $d\ge 4$ as an application. Furthermore, by exploiting the fact that local protocols are necessarily separable, we explicitly construct small sets of $k$ locally indistinguishable maximally entangled states with the ratio $k/d$ approaching 3/4. In particular, in a $d\otimes d$ system with even $d\ge 6$, there always exist $d-1$ maximally entangled states that are locally indistinguishable by separable measurements., Comment: 6 pages, 1 table

Published
2015

38. Hardy's Paradox and Measurement-disturbance Relations

Author

Fujikawa, Kazuo, Oh, C. H., and Yu, Sixia

Subjects
Quantum Physics
Abstract

We establish a quantitative relation between Hardy's paradox and the breaking of uncertainty principle in the sense of measurement-disturbance relations in the conditional measurement of non-commuting operators. The analysis of the inconsistency of local realism with entanglement by Hardy is simplified if this breaking of measurement-disturbance relations is taken into account, and a much simplified experimental test of local realism is illustrated in the framework of Hardy's thought experiment. The essence of Hardy's model is identified as a combination of two conditional measurements, which give rise to definite eigenvalues to two non-commuting operators simultaneously in hidden-variables models. Better understanding of the intimate interplay of entanglement and measurement-disturbance is crucial in the current discussions of Hardy's paradox using the idea of weak measurement, which is based on a general analysis of measurement-disturbance relations., Comment: 6 pages. PRA (in press)

Published
2014
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39. Quantum pigeonhole effect, Cheshire cat and contextuality

Author

Yu, Sixia and Oh, C. H.

Subjects
Quantum Physics
Abstract

A kind of paradoxical effects has been demonstrated that the pigeonhole principle, i.e., if three pigeons are put in two pigeonholes then at least two pigeons must stay in the same hole, fails in certain quantum mechanical scenario. Here we shall show how to associate a proof of Kochen-Specker theorem with a quantum pigeonhole effect and vise versa, e.g., from state-independent proofs of Kochen-Specker theorem some kind of state-independent quantum pigeonhole effects can be demonstrated. In particular, a state-independent version of the quantum Cheshire cat, which can be rendered as a kind of quantum pigeonhole effect about the trouble of putting two pigeons in two or more pigeonholes, arises from Peres-Mermin's magic square proof of contextuality., Comment: The last example is replaced by GHZ paradoxes from qudit graphs

Published
2014

40. Floquet control of quantum dissipation in spin chains

Author

Chen, Chong, An, Jun-Hong, Luo, Hong-Gang, Sun, C. P., and Oh, C. H.

Subjects
Quantum Physics
Abstract

Controlling the decoherence induced by the interaction of quantum system with its environment is a fundamental challenge in quantum technology. Utilizing Floquet theory, we explore the constructive role of temporal periodic driving in suppressing decoherence of a spin-1/2 particle coupled to a spin bath. It is revealed that, accompanying the formation of a Floquet bound state in the quasienergy spectrum of the whole system including the system and its environment, the dissipation of the spin system can be inhibited and the system tends to coherently synchronize with the driving. It can be seen as an analog to the decoherence suppression induced by the structured environment in spatially periodic photonic crystal setting. Comparing with other decoherence control schemes, our protocol is robust against the fluctuation of control parameters and easy to realize in practice. It suggests a promising perspective of periodic driving in decoherence control., Comment: 8 pages, 5 figures

Published
2014
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41. Majorana transport in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings

Author

You, Jia-Bin, Shao, Xiao-Qiang, Tong, Qing-Jun, Chan, A. H., Oh, C. H., and Vedral, Vlatko

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Tunneling experiment is a key technique for detecting Majorana fermion in solid state systems. We use Keldysh non-equilibrium Green function method to study multi-lead tunneling in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings. A zero-bias \textit{dc} conductance peak appears in our setup which signifies the existence of Majorana fermion and is in accordance with previous experimental results on InSb nanowire. Interestingly, due to the exotic property of Majorana fermion, there exists a hole transmission channel which makes the currents asymmetric at the left and right leads. The \textit{ac} current response mediated by Majorana fermion is also studied here. To discuss the impacts of Coulomb interaction and disorder on the transport property of Majorana nanowire, we use the renormalization group method to study the phase diagram of the wire. It is found that there is a topological phase transition under the interplay of superconductivity and disorder. We find that the Majorana transport is preserved in the superconducting-dominated topological phase and destroyed in the disorder-dominated non-topological insulator phase.

Published
2014
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42. Squeezing effect induced by minimal length uncertainty

Author

Chen, Yue-Yue, Feng, Xun-Li, Oh, C. H., and Xu, Zhi-Zhan

Subjects
Quantum Physics
Abstract

In this work, the dynamics of the deformed one-dimensional harmonic oscillator with minimal length uncertainty is examined and the analytical solutions for time evolution of position and momentum operators are presented in which the rough approximation that neglects the higher order terms in BakerHausdor lemma is avoided. Based on these analytical solutions the uncertainties for position and momentum operators are calculated in a coherent state, and an unexpected squeezing effect in both coordinate and momentum directions is found in comparison with ordinary harmonic oscillator. Obviously such a squeezing effect is induced by the minimal length uncertainty (gravitational effects). Our results are applied to the electrons trapped in strong magnetic fields to examine the degree of the existing squeezing effect in a real system, which shows the squeezing degree induced by minimal length uncertainty is very small., Comment: 9 pages, 3 figures

Published
2014

43. Robust quantum metrological schemes based on protection of quantum Fisher information

Author

Lu, Xiao-Ming, Yu, Sixia, and Oh, C. H.

Subjects
Quantum Physics
Abstract

Fragile quantum features such as entanglement are employed to improve the precision of parameter estimation and as a consequence the quantum gain becomes vulnerable to noise. As an established tool to subdue noise, quantum error correction is unfortunately overprotective because the quantum enhancement can still be achieved even if the states are irrecoverably affected, provided that the quantum Fisher information, which sets the ultimate limit to the precision of metrological schemes, is preserved and attained. Here, we develop a theory of robust metrological schemes that preserve the quantum Fisher information instead of the quantum states themselves against noise. After deriving a minimal set of testable conditions on this kind of robustness, we construct a family of $2t+1$ qubits metrological schemes being immune to $t$-qubit errors after the signal sensing. In comparison at least five qubits are required for correcting arbitrary 1-qubit errors in standard quantum error correction., Comment: 12 pages, 4 figures

Published
2014
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44. Optimal joint measurement of two observables of a qubit

Author

Yu, Sixia and Oh, C. H.

Subjects
Quantum Physics
Abstract

Heisenberg's uncertainty relations for measurement quantify how well we can jointly measure two complementary observables and have attracted much experimental and theoretical attention recently. Here we provide an exact tradeoff between the worst-case errors in measuring jointly two observables of a qubit, i.e., all the allowed and forbidden pairs of errors, especially asymmetric ones, are exactly pinpointed. For each pair of optimal errors we provide an optimal joint measurement that is realizable without introducing any ancilla and entanglement. Possible experimental implementations are discussed and Toronto experiment [Rozema et al., Phys. Rev. Lett. 109, 100404 (2012)] can be readily adapted to an optimal joint measurement of two orthogonal observables., Comment: 4 pages, 2 figures

Published
2014

45. Stationary three-dimensional entanglement via dissipative Rydberg pumping

Author

Shao, Xiao-Qiang, You, Jia-Bin, Zheng, Tai-Yu, Oh, C. H., and Zhang, Shou

Subjects
Quantum Physics
Abstract

We extend the recent result of bipartite Bell singlet [Carr and Saffman, Phys. Rev. Lett. {\bf111}, (2013)] to a stationary three-dimensional entanglement between two-individual neutral Rydberg atoms. This proposal makes full use of the coherent dynamics provided by Rydberg mediated interaction and the dissipative factor originating from the spontaneous emission of Rydberg state. The numerical simulation of the master equation reveals that both the target state negativity ${\cal N}(\hat\rho_{\infty})$ and fidelity ${\cal F}(\hat\rho_{\infty})$ can exceed 99.90%. Furthermore, a steady three-atom singlet state $|S_3\rangle$ is also achievable based on the same mechanism., Comment: 7 pages, 4 figures

Published
2014
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46. Test of Einstein-Podolsky-Rosen Steering Based on the All-Versus-Nothing Proof

Author

Wu, Chunfeng, Chen, Jing-Ling, Ye, Xiang-Jun, Su, Hong-Yi, Deng, Dong-Ling, Wang, Zhenghan, and Oh, C. H.

Subjects
Quantum Physics
Abstract

In comparison with entanglement and Bell nonlocality, Einstein-Podolsky-Rosen steering is a newly emerged research topic and in its incipient stage. Although Einstein-Podolsky-Rosen steering has been explored via violations of steering inequalities both theoretically and experimentally, the known inequalities in the literatures are far from well-developed. As a result, it is not yet possible to observe Einstein-Podolsky-Rosen steering for some steerable mixed states. Recently, a simple approach was presented to identify Einstein-Podolsky-Rosen steering based on all-versus-nothing argument, offering a strong condition to witness the steerability of a family of two-qubit (pure or mixed) entangled states. In this work, we show that the all-versus-nothing proof of Einstein-Podolsky-Rosen steering can be tested by measuring the projective probabilities. Through the bound of probabilities imposed by local-hidden-state model, the proposed test shows that steering can be detected by the all-versus-nothing argument experimentally even in the presence of imprecision and errors. Our test can be implemented in many physical systems and we discuss the possible realizations of our scheme with non-Abelian anyons and trapped ions., Comment: 8 pages, 3 figures. Accepted by Scientific Reports

Published
2014
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47. A quantum field theoretical model of neutrino oscillation without external wave packets

Author

Law, Z. Y., Chan, A. H., and Oh, C. H.

Subjects
High Energy Physics - Phenomenology
Abstract

We develop a general and consistent model of neutrino oscillation based on the quantum field theoretical description of the neutrino production and detection processes. Emphasis is placed on the locality of the interactions of these processes, where on top of the usual application of the four fermion local Hamiltonian, we assume that weak interactions switched on only when the wave functions of the particles involved are overlapping and switched off upon their separation. A key assumption in our treatment is that the wave packet sizes of the particles, in particular, the neutrino producing source particles and the neutrino absorbing detector particles, are taken to be negligible compared with their mean free path in their respective medium. With this assumption, and taking into considerations of the finite time of neutrino production, neutrino wave packets with well-defined edges are generated. This fact, together with the locality of weak interactions, enable us to relate the propagation time to the propagation distance, thus doing away with the ad hoc time averaging procedure normally employing in derivations of neutrino oscillation formula. No assumptions on the particular forms of particle wave functions; for example, Gaussians, need to be made. A good feature of our approach is that the neutrino oscillation formula is automatically normalised if the in-going states of the production and detection processes are normalised. We also show that causality and unitarity cannot both be satisfied in virtual neutrino models., Comment: 32 pages, 10 figures

Published
2014

49. Socioeconomic variations determine the clinical presentation, aetiology, and outcome of infective endocarditis: a prospective cohort study from the ESC-EORP EURO-ENDO (European Infective Endocarditis) registry

Author

Sengupta, S, Prendergast, B, Laroche, C, Furnaz, S, Ronderos, R, Almaghraby, A, Asch, F, Blechova, K, Zaky, H, Strahilevitz, J, Dworakowski, R, Miyasaka, Y, Sebag, I, Izumi, C, Axler, O, Jamiel, A, Philip, M, Vieira, M, Lancellotti, P, Habib, G, Gale, C, Beleslin, B, Budaj, A, Chioncel, O, Dagres, N, Danchin, N, Emberson, J, Erlinge, D, Glikson, M, Gray, A, Kayikcioglu, M, Maggioni, A, Nagy, V, Nedoshivin, A, Petronio, A, Roos-Hesselink, J, Wallentin, L, Zeymer, U, Cosyns, B, Donal, E, Erba, P, Iung, B, Popescu, B, Tornos, P, Andarala, M, Berle, C, Brunel-Lebecq, A, Fiorucci, E, Missiamenou, V, Taylor, C, Ali Tatar-Chentir, N, Al-Mallah, M, Astrom Aneq, M, Athanassopoulos, G, Badano, L, Benyoussef, S, Calderon Aranda, E, Cardim, N, Chan, K, Cruz, I, Edvardsen, T, Goliasch, G, Hagendorff, A, Hristova, K, Kamp, O, Kang, D, Kong, W, Matskeplishvili, S, Meshaal, M, Mirocevic, M, Neskovic, A, Pazdernik, M, Plonska-Gosciniak, E, Raissouni, M, Sade, L, Sadeghpour, A, Sambola, A, Separovic-Hanzevacki, J, Takeuchi, M, Tucay, E, Tude Rodrigues, A, Varga, A, Vaskelyte, J, Yamagata, K, Yiangou, K, Granada, I, Mahia, M, Ressi, S, Na-Cinovich, F, Iribarren, A, Fernandez Oses, P, Avegliano, G, Filipini, E, Obregon, R, Bangher, M, Dho, J, Cartasegna, L, Plastino, M, Novas, V, Shigel, C, Reyes, G, De Santos, M, Gastaldello, N, Granillo Fernandez, M, Potito, M, Streit-Enberger, G, Velazco, P, Casabe, J, Cortes, C, Guevara, E, Salmo, F, Seijo, M, Weidinger, F, Heger, M, Brooks, R, Stollberger, C, Ho, C, Perschy, L, Puskas, L, Binder, C, Rosenhek, R, Schneider, M, Winter, M, Hoffer, E, Melis-Sopoulou, M, Lecoq, E, Legrand, D, Jacquet, S, Massoz, M, Pierard, L, Marchetta, S, Dulgheru, R, D'Emal, C, Oury, C, Droog-Mans, S, Kerkhove, D, Plein, D, Soens, L, Weytjens, C, Motoc, A, Roosens, B, Lemoine, I, Rodrigus, I, Paelinck, B, Am-Sel, B, Unger, P, Konopnicki, D, Beauloye, C, Pasquet, A, Vanoverschelde, J, Pierard, S, Vancraeynest, D, Sinnaeve, F, Andrade, J, Staszko, K, Dos Santos Monteiro, R, Miglioranza, M, Shuha, D, Alcantara, M, Cravo, V, Fazzio, L, Felix, A, Iso, M, Musa, C, Siciliano, A, Villaca Filho, F, Rodrigues, A, Vilela, F, Braga, J, Silva, R, Rodrigues, D, Silva, L, Morhy, S, Fischer, C, Afonso, T, Abreu, J, Falcao, S, Moises, V, Gou-Vea, A, Mancuso, F, Souza, A, Silva, C, Joao, G, Abboud, C, Bellio de Mattos Barretto, R, Ramos, A, Arnoni, R, Assef, J, Della Togna, D, Le Bihan, D, Miglioli, L, Romero Oliveira, A, Tadeu Magro Kroll, R, Cortez, D, Gelape, C, Peirira Nunes, M, De Abreu Ferrari, T, Hay, K, Le, V, Page, M, Poulin, F, Sauve, C, Serri, K, Mercure, C, Beaudoin, J, Pibarot, P, Rudski, L, Ricafort, G, Barsic, B, Krajinovic, V, Vargovic, M, Lovric, D, Reskovic-Luksic, V, Vincelj, J, Jaksic Jurinjak, S, Yiannikourides, V, Ioannides, M, Pofaides, C, Masoura, V, Pudich, J, Linhart, A, Siranec, M, Marek, J, Kamenik, M, Pelouch, R, Coufal, Z, Mikulica, M, Griva, M, Jancova, E, Mikulcova, M, Taborsky, M, Precek, J, Jecmenova, M, Latal, J, Widimsky, J, Butta, T, Machacek, S, Vancata, R, Spinar, J, Holicka, M, Pow Chon Long, F, Anzules, N, Bajana Carpio, A, Largacha, G, Penaherrera, E, Moreira, D, Mahfouz, E, Elsafty, E, Soliman, A, Zayed, Y, Aboulenein, J, Abdel-Hay, M, Abdelnaby, M, Ahmed, M, Hammad, B, Saleh, Y, Zahran, H, El-Gebaly, O, Saad, A, Ali, M, Zeid, A, El Sharkawy, R, Al Kholy, A, Doss, R, Osama, D, Rizk, H, Elmogy, A, Mishriky, M, Assayag, P, El Hatimi, S, Hubert, S, Casalta, J, Gouriet, F, Arregle, F, Cammilleri, S, Tessonnier, L, Riberi, A, Botelho-Nevers, E, Gagneux-Brunon, A, Pierrard, R, Tulane, C, Campisi, S, Fuzellier, J, Detoc, M, Mehalla, T, Boutoille, D, Lecompte, A, Lefebvre, M, Pattier, S, Al Habash, O, Asseray-Madani, N, Biron, C, Brochard, J, Caillon, J, Cueff, C, Le Tourneau, T, Lecomte, R, Magali Michel, M, Orain, J, Delarue, S, Le Bras, M, Faucher, J, Aboyans, V, Bee-Harry, A, Durox, H, Lacoste, M, Magne, J, Mohty, D, David, A, Pradel, V, Sierra, V, Neykova, A, Bettayeb, B, Elkentaoui, S, Tzvetkov, B, Landry, G, Strady, C, Ainine, K, Baumard, S, Brasselet, C, Tassigny, C, Valente-Pires, V, Lefranc, M, Hoen, B, Lefevre, B, Curlier, E, Callier, C, Fourcade, N, Jobic, Y, Ansard, S, Le Berre, R, Le Ven, F, Pouliquen, M, Prat, G, Le Roux, P, Bouchart, F, Savoure, A, Alarcon, C, Chapuzet, C, Gueit, I, Tribouilloy, C, Bohbot, Y, Peugnet, F, Gun, M, Duval, X, Lescure, X, Ilic-Habensus, E, Sadoul, N, Selton-Suty, C, Alla, F, Goehringer, F, Huttin, O, Chevalier, E, Garcia, R, Le Marcis, V, Tattevin, P, Flecher, E, Revest, M, Chirouze, C, Bouiller, K, Hustache-Mathieu, L, Klopfenstein, T, Moreau, J, Fournier, D, Brunel, A, Lim, P, Oliver, L, Ternacle, J, Moussafeur, A, Chavanet, P, Piroth, L, Salmon-Rousseau, A, Buisson, M, Mahy, S, Martins, C, Go-Hier, S, Baumann, F, Lebras, S, Piper, C, Guckel, D, Borgermann, J, Horstkotte, D, Winkelmann, E, Brockmeier, B, Grey, D, Nick-Enig, G, Schueler, R, Ozturk, C, Stohr, E, Hamm, C, Walther, T, Brandt, R, Fruhauf, A, Hartung, C, Hellner, C, Wild, C, Becker, M, Hamada, S, Kaestner, W, Stangl, K, Knebel, F, Baldenhofer, G, Brecht, A, Dreger, H, Isner, C, Pfafflin, F, Stegemann, M, Zahn, R, Fraiture, B, Kilkowski, C, Karcher, A, Klinger, S, Tolksdorf, H, Tousoulis, D, Aggeli, C, Sideris, S, Venieri, E, Sarri, G, Tsiapras, D, Armenis, I, Koutsiari, A, Floros, G, Grassos, C, Dragasis, S, Rallidis, L, Varlamos, C, Michalis, L, Naka, K, Bechlioulis, A, Kotsia, A, Lakkas, L, Pappas, K, Papadopoulos, C, Kiokas, S, Lioni, A, Misailidou, S, Bar-Betseas, J, Bonou, M, Kapelios, C, Tomprou, I, Zerva, K, Manolis, A, Hamodraka, E, Athanasiou, D, Haralambidis, G, Samaras, H, Poulimenos, L, Nagy, A, Bartykowszki, A, Gara, E, Mungulmare, K, Kasliwal, R, Bansal, M, Ranjan, S, Bhan, A, Kyavar, M, Maleki, M, Noohi Bezanjani, F, Alizadehasl, A, Boudagh, S, Ghavidel, A, Morad-Nejad, P, Pasha, H, Ghadrdoost, B, Gilon, D, Wanounou, M, Israel, S, D'Agostino, C, Colonna, P, De Michele, L, Fumarola, F, Stante, M, Mar-Chionni, N, Scheggi, V, Alterini, B, Del Pace, S, Stefano, P, Sparano, C, Ruozi, N, Tenaglia, R, Muraru, D, Limbruno, U, Cresti, A, Baratta, P, Solari, M, Giannattasio, C, Moreo, A, De Chiara, B, Lopez Montero, B, Musca, F, Orcese, C, Panzeri, F, Spano, F, Russo, C, Alferi, O, De Bonis, M, Chiappetta, S, Del Forno, B, Ripa, M, Scarpellini, P, Tassan Din, C, Castiglioni, B, Pasci-Uta, R, Carletti, S, Ferrara, D, Guffanti, M, Iaci, G, Lapenna, E, Nisi, T, Oltolini, C, Busnardo, E, Pajoro, U, Agricola, E, Meneghin, R, Schiavi, D, Piscione, F, Citro, R, Benvenga, R, Greco, L, Soriente, L, Radano, I, Prota, C, Bellino, M, Di Vece, D, Santini, F, Salsano, A, Olivieri, G, Turrini, F, Messora, R, Tondi, S, Olaru, A, Agnoletto, V, Grassi, L, Leonardi, C, Sansoni, S, Del Ponte, S, Actis Dato, G, De Martino, A, Ohte, N, Kikuchi, S, Wakami, K, Aonuma, K, Seo, Y, Ishizu, T, Machino-Ohtsuka, T, Yamamoto, M, Iida, N, Nakajima, H, Nakagawa, Y, Amano, M, Miyake, M, Takahashi, K, Shiojima, I, Maeba, H, Suwa, Y, Taniguchi, N, Tsujimoto, S, Kitai, T, Ota, M, Yuda, S, Sasaki, S, Hagiwara, N, Yamazaki, K, Ashihara, K, Arai, K, Saitou, C, Saitou, S, Suzuki, G, Shibata, Y, Watanabe, N, Nishino, S, Ashikaga, K, Kuriyama, N, Mahara, K, Okubo, T, Fujimaki, H, Shi-Tan, H, Yamamoto, H, Abe, K, Terada, M, Takanashi, S, Sata, M, Yamada, H, Kusunose, K, Saijo, Y, Seno, H, Yuichiro, O, Onishi, T, Sera, F, Nakatani, S, Mizuno, H, Sengoku, K, Park, S, Eun Kyoung, K, Ga Yeon, L, Hwang, J, Jin-Oh, C, Sang-Chol, L, Sung-A, C, Jang, S, Heo, R, Lee, S, Song, J, Jung, E, Plisiene, J, Dambrauskaite, A, Gruodyte, G, Jonkaitiene, R, Mizariene, V, Atkocaityte, J, Zvirblyte, R, Sow, R, Codreanu, A, Staub, T, Michaux, C, De la Vega, E, Jacobs-Orazi, L, Mallia Azzopardi, C, Xuereb, R, Pis-Copo, T, Farrugia, J, Fenech, M, Pllaha, E, Vella, C, Borg, D, Casha, R, Grib, L, Raevschi, E, Gre-Jdieru, A, Kravcenco, D, Prisacari, E, Samohvalov, E, Samohvalov, S, Sceglova, N, Panfle, E, Cardaniuc, L, Corcea, V, Feodorovici, A, Gaina, V, Girbu, L, Jimbei, P, Balan, G, Cardaniuc, I, Benesco, I, Marian, V, Sumarga, N, Bozovic, B, Bulatovic, N, Lakovic, P, Music, L, Budde, R, Waha-Dat, A, Gamela, T, Meijers, T, Van Melle, J, Deursen, V, Crijns, H, Bekkers, S, Cheriex, E, Gilbers, M, Kietselaer, B, Knackstedt, C, Lorusso, R, Schalla, S, Streukens, S, Chamuleau, S, Cramer, M, Teske, A, Van der Spoel, T, Wind, A, Lokhorst, J, Liesbek, O, Van Heusden, H, Tanis, W, Van der Bilt, I, Vriend, J, De Lange-Van Bruggen, H, Karijodikoro, E, Riezebos, R, van Dongen, E, Schoep, J, Stolk, V, Offstad, J, Beitnes, J, Helle-Valle, T, Skulstad, H, Skardal, R, Qamar, N, Ahmed, B, Butt, M, Khanzada, M, Saghir, T, Wahid, A, Hryniewiecki, T, Szymanski, P, Marzec, K, Misztal-Ogonowska, M, Kosmala, W, Przewlocka-Kosmala, M, Rojek, A, Woznicka, K, Zachwyc, J, Lisowska, A, Kamin-Ska, M, Kasprzak, J, Kowalczyk, E, Strzecka, D, Wejner-Mik, P, Trabulo, M, Freitas, P, Ranchordas, S, Rodrigues, G, Pinto, P, Queiros, C, Azevedo, J, Marques, L, Seabra, D, Branco, L, Cruz, M, Galrinho, A, Moreira, R, Rio, P, Timoteo, A, Selas, M, Carmelo, V, Duque Neves, B, Pereira, H, Guerra, A, Marques, A, Pintassilgo, I, Tomescu, M, Trofenciuc, N, Andor, M, Bordejevic, A, Branea, H, Caruntu, F, Velcean, L, Mavrea, A, Onel, M, Parvanescu, T, Pop, D, Pop-Moldovan, A, Puticiu, M, Cirin, L, Citu, I, Cotoraci, C, Darabantiu, D, Farcas, R, Marincu, I, Ionac, A, Cozma, D, Mornos, C, Goanta, F, Popescu, I, Beyer, R, Mada, R, Rancea, R, Tomoaia, R, Rosianu, H, Stanescu, C, Kobalava, Z, Karaulova, J, Ko-Tova, E, Milto, A, Pisaryuk, A, Povalyaev, N, Sorokina, M, Alrahimi, J, Elshiekh, A, Ahmed, A, Attia, N, Putnikovic, B, Dimic, A, Ivanovic, B, Matic, S, Trifunovic, D, Petrovic, J, Kosevic, D, Stojanovic, I, Petrovic, I, Dabic, P, Milojevic, P, Srdanovic, I, Susak, S, Velicki, L, Vulin, A, Kovacevic, M, Redzek, A, Stefanovic, M, Yeo, T, Poh, K, Vi-Lacosta, I, Ferrera, C, Olmos, C, Abd El-Nasser, M, Calvo Iglesias, F, Bianco-Gonzalez, E, Bravo Amaro, M, Lopez-Rodriguez, E, Lugo Adan, J, Germinas, A, Pazos-Lopez, P, Pereira Loureiro, M, Perez, M, Raposeiras-Roubin, S, Rasheed Yas, S, Suarez-Varela, M, Vasallo Vidal, F, Garcia-Dorado, D, Fernandez-Hidalgo, N, Gonzalez-Alujas, T, Lozano, J, Maisterra, O, Pizzi, N, Rios, R, Bayes-Genis, A, Pedro Botet, L, Vallejo, N, Llibre, C, Mateu, L, Nunez, R, Quesada, D, Berastegui, E, Bosch Portell, D, Aboal Vinas, J, Albert Bertran, X, Brugada Tar-Radellas, R, Loma-Osorio Ricon, P, Tiron de Llano, C, Arnau, M, Bel, A, Blanes, M, Osa, A, Anguita, M, Carrasco, F, Castillo, J, Zamorano, J, Moya Mur, J, Alvaro, M, Fernandez-Golfin, C, Monteagudo, J, Navas Elorza, E, Farinas Alvarez, M, Aguero Balbin, J, Zarauza, J, Gutierrez-Diez, J, Arminanzas, C, Arnaiz de las Revillas, F, Arnaiz Garcia, A, Cobo Belaustegui, M, Fernandez Sampedro, M, Gutierrez Cuadra, M, Garcia Cuello, L, Gonzalez Rico, C, Rodriguez-Alvarez, R, Goikoetxea, J, Montejo, M, Miro, J, Almela, M, Ambrosioni, J, Moreno, A, Quintana, E, Sandoval, E, Tellez, A, Tolosana, J, Vidal, B, Falces, C, Fuster, D, Garcia-De-la-Maria, C, Hernandez-Meneses, M, Llopis, J, Marco, F, Ruiz-Zamora, I, Bardaji Ruiz, A, Sanz Girgas, E, Garcia-Pardo, G, Guillen Marzo, M, Rodriguez Oviedo, A, Villares Jimenez, A, Abid, L, Ham-Mami, R, Kammoun, S, Mourali, M, Mghaieth Zghal, F, Ben Hlima, M, Boudiche, S, Ouali, S, Zakhama, L, Antit, S, Slama, I, Gulel, O, Sahin, M, Karacaglar, E, Kucukoglu, S, Cetinarslan, O, Sinan, U, Canpolat, U, Mutlu, B, Atas, H, Dervishova, R, Ileri, C, Alhashmi, J, Tahir, J, Zarger, P, Baslib, F, Woldman, S, Menezes, L, Primus, C, Uppal, R, Bvekerwa, I, Chandrasekaran, B, Kopanska, A, Chambers, J, Hancock, J, Klein, J, Rajani, R, Ursi, M, Cannata, S, Fife, A, Breeze, J, Browne-Morgan, M, Gunning, M, Streather, S, Zemedkun, M, Alyavi, B, Uzokov, J, Sengupta S. P., Prendergast B., Laroche C., Furnaz S., Ronderos R., Almaghraby A., Asch F. M., Blechova K., Zaky H., Strahilevitz J., Dworakowski R., Miyasaka Y., Sebag I., Izumi C., Axler O., Jamiel A., Philip M., Vieira M. L. C., Lancellotti P., Habib G., Gale C. P., Beleslin B., Budaj A., Chioncel O., Dagres N., Danchin N., Emberson J., Erlinge D., Glikson M., Gray A., Kayikcioglu M., Maggioni A. P., Nagy V. K., Nedoshivin A., Petronio A. -S., Roos-Hesselink J., Wallentin L., Zeymer U., Cosyns B., Donal E., Erba P., Iung B., Popescu B. A., Tornos P., Andarala M., Berle C., Brunel-Lebecq A., Fiorucci E., Missiamenou V., Taylor C., Ali Tatar-Chentir N. N., Al-Mallah M., Astrom Aneq M., Athanassopoulos G., Badano L. P., Benyoussef S., Calderon Aranda E., Cardim N. M., Chan K. -L., Cruz I., Edvardsen T., Goliasch G., Hagendorff A., Hristova K., Kamp O., Kang D. -H., Kong W., Matskeplishvili S., Meshaal M., Mirocevic M., Neskovic A. N., Pazdernik M., Plonska-Gosciniak E., Raissouni M., Sade L. E., Sadeghpour A., Sambola A., Separovic-Hanzevacki J., Takeuchi M., Tucay E., Tude Rodrigues A. C., Varga A., Vaskelyte J., Yamagata K., Yiangou K., Granada I., Mahia M., Ressi S., Na-Cinovich F., Iribarren A., Fernandez Oses P., Avegliano G., Filipini E., Obregon R., Bangher M., Dho J., Cartasegna L., Plastino M. L., Novas V., Shigel C., Reyes G., De Santos M., Gastaldello N., Granillo Fernandez M., Potito M., Streit-Enberger G., Velazco P., Casabe J. H., Cortes C., Guevara E., Salmo F., Seijo M., Weidinger F., Heger M., Brooks R., Stollberger C., Ho C. -Y., Perschy L., Puskas L., Binder C., Rosenhek R., Schneider M., Winter M. -P., Hoffer E., Melis-Sopoulou M., Lecoq E., Legrand D., Jacquet S., Massoz M., Pierard L., Marchetta S., Dulgheru R., D'Emal C., Oury C., Droog-Mans S., Kerkhove D., Plein D., Soens L., Weytjens C., Motoc A., Roosens B., Lemoine I., Rodrigus I., Paelinck B., Am-Sel B., Unger P., Konopnicki D., Beauloye C., Pasquet A., Vanoverschelde J. L., Pierard S., Vancraeynest D., Sinnaeve F., Andrade J. L., Staszko K., Dos Santos Monteiro R., Miglioranza M. H., Shuha D. L., Alcantara M., Cravo V., Fazzio L., Felix A., Iso M., Musa C., Siciliano A. P., Villaca Filho F., Rodrigues A., Vilela F., Braga J., Silva R., Rodrigues D., Silva L., Morhy S., Fischer C., Afonso T., Abreu J., Falcao S. N., Moises V. A., Gou-Vea A., Mancuso F. J., Souza A. C., Silva C. Y., Joao G., Abboud C. S., Bellio de Mattos Barretto R., Ramos A., Arnoni R., Assef J. E., Della Togna D. J., Le Bihan D., Miglioli L., Romero Oliveira A. P., Tadeu Magro Kroll R., Cortez D., Gelape C. L., Peirira Nunes M. D. C., De Abreu Ferrari T. C., Hay K., Le V., Page M., Poulin F., Sauve C., Serri K., Mercure C., Beaudoin J., Pibarot P., Rudski L. G., Ricafort G., Barsic B., Krajinovic V., Vargovic M., Lovric D., Reskovic-Luksic V., Vincelj J., Jaksic Jurinjak S., Yiannikourides V., Ioannides M., Pofaides C., Masoura V., Pudich J., Linhart A., Siranec M., Marek J., Kamenik M., Pelouch R., Coufal Z., Mikulica M., Griva M., Jancova E., Mikulcova M., Taborsky M., Precek J., Jecmenova M., Latal J., Widimsky J., Butta T., Machacek S., Vancata R., Spinar J., Holicka M., Pow Chon Long F., Anzules N., Bajana Carpio A., Largacha G., Penaherrera E., Moreira D., Mahfouz E., Elsafty E., Soliman A., Zayed Y., Aboulenein J., Abdel-Hay M., Abdelnaby M., Ahmed M., Hammad B., Saleh Y., Zahran H., El-Gebaly O., Saad A., Ali M., Zeid A., El Sharkawy R., Al Kholy A., Doss R., Osama D., Rizk H., Elmogy A., Mishriky M., Assayag P., El Hatimi S., Hubert S., Casalta J. -P., Gouriet F., Arregle F., Cammilleri S., Tessonnier L., Riberi A., Botelho-Nevers E., Gagneux-Brunon A., Pierrard R., Tulane C., Campisi S., Fuzellier J. -F., Detoc M., Mehalla T., Boutoille D., Lecompte A. S., Lefebvre M., Pattier S., Al Habash O., Asseray-Madani N., Biron C., Brochard J., Caillon J., Cueff C., Le Tourneau T., Lecomte R., Magali Michel M. M., Orain J., Delarue S., Le Bras M., Faucher J. -F., Aboyans V., Bee-Harry A., Durox H., Lacoste M., Magne J., Mohty D., David A., Pradel V., Sierra V., Neykova A., Bettayeb B., Elkentaoui S., Tzvetkov B., Landry G., Strady C., Ainine K., Baumard S., Brasselet C., Tassigny C., Valente-Pires V., Lefranc M., Hoen B., Lefevre B., Curlier E., Callier C., Fourcade N., Jobic Y., Ansard S., Le Berre R., Le Ven F., Pouliquen M. -C., Prat G., Le Roux P., Bouchart F., Savoure A., Alarcon C., Chapuzet C., Gueit I., Tribouilloy C., Bohbot Y., Peugnet F., Gun M., Duval X., Lescure X., Ilic-Habensus E., Sadoul N., Selton-Suty C., Alla F., Goehringer F., Huttin O., Chevalier E., Garcia R., Le Marcis V., Tattevin P., Flecher E., Revest M., Chirouze C., Bouiller K., Hustache-Mathieu L., Klopfenstein T., Moreau J., Fournier D., Brunel A. -S., Lim P., Oliver L., Ternacle J., Moussafeur A., Chavanet P., Piroth L., Salmon-Rousseau A., Buisson M., Mahy S., Martins C., Go-Hier S., Baumann F., Lebras S., Piper C., Guckel D., Borgermann J., Horstkotte D., Winkelmann E., Brockmeier B., Grey D., Nick-Enig G., Schueler R., Ozturk C., Stohr E., Hamm C., Walther T., Brandt R., Fruhauf A. -C., Hartung C. T., Hellner C., Wild C., Becker M., Hamada S., Kaestner W., Stangl K., Knebel F., Baldenhofer G., Brecht A., Dreger H., Isner C., Pfafflin F., Stegemann M., Zahn R., Fraiture B., Kilkowski C., Karcher A. -K., Klinger S., Tolksdorf H., Tousoulis D., Aggeli C., Sideris S., Venieri E., Sarri G., Tsiapras D., Armenis I., Koutsiari A., Floros G., Grassos C., Dragasis S., Rallidis L., Varlamos C., Michalis L., Naka K., Bechlioulis A., Kotsia A., Lakkas L., Pappas K., Papadopoulos C., Kiokas S., Lioni A., Misailidou S., Bar-Betseas J., Bonou M., Kapelios C., Tomprou I., Zerva K., Manolis A., Hamodraka E., Athanasiou D., Haralambidis G., Samaras H., Poulimenos L., Nagy A., Bartykowszki A., Gara E., Mungulmare K., Kasliwal R., Bansal M., Ranjan S., Bhan A., Kyavar M., Maleki M., Noohi Bezanjani F., Alizadehasl A., Boudagh S., Ghavidel A., Morad-Nejad P., Pasha H. R., Ghadrdoost B., Gilon D., Wanounou M., Israel S., d'Agostino C., Colonna P., De Michele L., Fumarola F., Stante M., Mar-Chionni N., Scheggi V., Alterini B., Del Pace S., Stefano P., Sparano C., Ruozi N., Tenaglia R., Muraru D., Limbruno U., Cresti A., Baratta P., Solari M., Giannattasio C., Moreo A., De Chiara B., Lopez Montero B., Musca F., Orcese C. A., Panzeri F., Spano F., Russo C. F., Alferi O., De Bonis M., Chiappetta S., Del Forno B., Ripa M., Scarpellini P., Tassan Din C., Castiglioni B., Pasci-Uta R., Carletti S., Ferrara D., Guffanti M., Iaci G., Lapenna E., Nisi T., Oltolini C., Busnardo E., Pajoro U., Agricola E., Meneghin R., Schiavi D., Piscione F., Citro R., Benvenga R. M., Greco L., Soriente L., Radano I., Prota C., Bellino M., Di Vece D., Santini F., Salsano A., Olivieri G. M., Turrini F., Messora R., Tondi S., Olaru A., Agnoletto V., Grassi L., Leonardi C., Sansoni S., Del Ponte S., Actis Dato G. M., De Martino A., Ohte N., Kikuchi S., Wakami K., Aonuma K., Seo Y., Ishizu T., Machino-Ohtsuka T., Yamamoto M., Iida N., Nakajima H., Nakagawa Y., Amano M., Miyake M., Takahashi K., Shiojima I., Maeba H., Suwa Y., Taniguchi N., Tsujimoto S., Kitai T., Ota M., Yuda S., Sasaki S., Hagiwara N., Yamazaki K., Ashihara K., Arai K., Saitou C., Saitou S., Suzuki G., Shibata Y., Watanabe N., Nishino S., Ashikaga K., Kuriyama N., Mahara K., Okubo T., Fujimaki H., Shi-Tan H., Yamamoto H., Abe K., Terada M., Takanashi S., Sata M., Yamada H., Kusunose K., Saijo Y., Seno H., Yuichiro O., Onishi T., Sera F., Nakatani S., Mizuno H., Sengoku K., Park S. W., Eun Kyoung K., Ga Yeon L., Hwang J. -W., Jin-Oh C., Park S. -J., Sang-Chol L., Sung-A C., Jang S. Y., Heo R., Lee S., Song J. -M., Jung E., Plisiene J., Dambrauskaite A., Gruodyte G., Jonkaitiene R., Mizariene V., Atkocaityte J., Zvirblyte R., Sow R., Codreanu A., Staub T., Michaux C., De la Vega E. C. L., Jacobs-Orazi L., Mallia Azzopardi C., Xuereb R. G., Pis-Copo T., Farrugia J., Fenech M., Pllaha E., Vella C., Borg D., Casha R., Grib L., Raevschi E., Gre-Jdieru A., Kravcenco D., Prisacari E., Samohvalov E., Samohvalov S., Sceglova N., Panfle E., Cardaniuc L., Corcea V., Feodorovici A., Gaina V., Girbu L., Jimbei P., Balan G., Cardaniuc I., Benesco I., Marian V., Sumarga N., Bozovic B., Bulatovic N., Lakovic P., Music L., Budde R., Waha-Dat A., Gamela T., Meijers T., Van Melle J. P., Deursen V. M., Crijns H. J., Bekkers S. C., Cheriex E. C., Gilbers M., Kietselaer B. L., Knackstedt C., Lorusso R., Schalla S., Streukens S. A., Chamuleau S., Cramer M. -J., Teske A., Van der Spoel T., Wind A., Lokhorst J., Liesbek O., Van Heusden H., Tanis W., Van der Bilt I., Vriend J., De Lange-Van Bruggen H., Karijodikoro E., Riezebos R., van Dongen E., Schoep J., Stolk V., Offstad J. T., Beitnes J. O., Helle-Valle T., Skulstad H., Skardal R., Qamar N., Ahmed B., Butt M. H., Khanzada M. F., Saghir T., Wahid A., Hryniewiecki T., Szymanski P., Marzec K., Misztal-Ogonowska M., Kosmala W., Przewlocka-Kosmala M., Rojek A., Woznicka K., Zachwyc J., Lisowska A., Kamin-Ska M., Kasprzak J. D., Kowalczyk E., Strzecka D. F., Wejner-Mik P., Trabulo M., Freitas P., Ranchordas S., Rodrigues G., Pinto P., Queiros C., Azevedo J., Marques L., Seabra D., Branco L., Cruz M., Galrinho A., Moreira R., Rio P., Timoteo A. T., Selas M., Carmelo V., Duque Neves B., Pereira H., Guerra A., Marques A., Pintassilgo I., Tomescu M. C., Trofenciuc N. -M., Andor M., Bordejevic A., Branea H. S., Caruntu F., Velcean L. A., Mavrea A., Onel M. F., Parvanescu T., Pop D., Pop-Moldovan A. L., Puticiu M. I., Cirin L., Citu I. M., Cotoraci C. A., Darabantiu D., Farcas R., Marincu I., Ionac A., Cozma D., Mornos C., Goanta F., Popescu I., Beyer R., Mada R., Rancea R., Tomoaia R., Rosianu H., Stanescu C., Kobalava Z., Karaulova J., Ko-Tova E., Milto A., Pisaryuk A., Povalyaev N., Sorokina M., Alrahimi J., Elshiekh A., Ahmed A., Attia N., Putnikovic B., Dimic A., Ivanovic B., Matic S., Trifunovic D., Petrovic J., Kosevic D., Stojanovic I., Petrovic I., Dabic P., Milojevic P., Srdanovic I., Susak S., Velicki L., Vulin A., Kovacevic M., Redzek A., Stefanovic M., Yeo T. C., Kong W. K. F., Poh K. K., Vi-Lacosta I., Ferrera C., Olmos C., Abd El-Nasser M., Calvo Iglesias F., Bianco-Gonzalez E., Bravo Amaro M., Lopez-Rodriguez E., Lugo Adan J., Germinas A. N., Pazos-Lopez P., Pereira Loureiro M., Perez M. T., Raposeiras-Roubin S., Rasheed Yas S., Suarez-Varela M. -M., Vasallo Vidal F., Garcia-Dorado D., Fernandez-Hidalgo N., Gonzalez-Alujas T., Lozano J., Maisterra O., Pizzi N., Rios R., Bayes-Genis A., Pedro Botet L., Vallejo N., Llibre C., Mateu L., Nunez R., Quesada D., Berastegui E., Bosch Portell D., Aboal Vinas J., Albert Bertran X., Brugada Tar-Radellas R., Loma-Osorio Ricon P., Tiron de Llano C., Arnau M. A., Bel A., Blanes M., Osa A., Anguita M., Carrasco F., Castillo J. C., Zamorano J. L., Moya Mur J. L., Alvaro M., Fernandez-Golfin C., Monteagudo J. M., Navas Elorza E., Farinas Alvarez M. C., Aguero Balbin J., Zarauza J., Gutierrez-Diez J. F., Arminanzas C., Arnaiz de las Revillas F., Arnaiz Garcia A., Cobo Belaustegui M., Fernandez Sampedro M., Gutierrez Cuadra M., Garcia Cuello L., Gonzalez Rico C., Rodriguez-Alvarez R., Goikoetxea J., Montejo M., Miro J. M., Almela M., Ambrosioni J., Moreno A., Quintana E., Sandoval E., Tellez A., Tolosana J. M., Vidal B., Falces C., Fuster D., Garcia-De-la-Maria C., Hernandez-Meneses M., Llopis J., Marco F., Ruiz-Zamora I., Bardaji Ruiz A., Sanz Girgas E., Garcia-Pardo G., Guillen Marzo M., Rodriguez Oviedo A., Villares Jimenez A., Abid L., Ham-Mami R., Kammoun S., Mourali M. S., Mghaieth Zghal F., Ben Hlima M., Boudiche S., Ouali S., Zakhama L., Antit S., Slama I., Gulel O., Sahin M., Karacaglar E., Kucukoglu S., Cetinarslan O., Sinan U. Y., Canpolat U., Mutlu B., Atas H., Dervishova R., Ileri C., Alhashmi J., Tahir J., Zarger P., Baslib F., Woldman S., Menezes L., Primus C., Uppal R., Bvekerwa I., Chandrasekaran B., Kopanska A., Chambers J., Hancock J., Klein J., Rajani R., Ursi M. P., Cannata S., Fife A., Breeze J., Browne-Morgan M., Gunning M., Streather S., Zemedkun M., Alyavi B., Uzokov J., Sengupta, S, Prendergast, B, Laroche, C, Furnaz, S, Ronderos, R, Almaghraby, A, Asch, F, Blechova, K, Zaky, H, Strahilevitz, J, Dworakowski, R, Miyasaka, Y, Sebag, I, Izumi, C, Axler, O, Jamiel, A, Philip, M, Vieira, M, Lancellotti, P, Habib, G, Gale, C, Beleslin, B, Budaj, A, Chioncel, O, Dagres, N, Danchin, N, Emberson, J, Erlinge, D, Glikson, M, Gray, A, Kayikcioglu, M, Maggioni, A, Nagy, V, Nedoshivin, A, Petronio, A, Roos-Hesselink, J, Wallentin, L, Zeymer, U, Cosyns, B, Donal, E, Erba, P, Iung, B, Popescu, B, Tornos, P, Andarala, M, Berle, C, Brunel-Lebecq, A, Fiorucci, E, Missiamenou, V, Taylor, C, Ali Tatar-Chentir, N, Al-Mallah, M, Astrom Aneq, M, Athanassopoulos, G, Badano, L, Benyoussef, S, Calderon Aranda, E, Cardim, N, Chan, K, Cruz, I, Edvardsen, T, Goliasch, G, Hagendorff, A, Hristova, K, Kamp, O, Kang, D, Kong, W, Matskeplishvili, S, Meshaal, M, Mirocevic, 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Abstract

Aims Infective endocarditis (IE) is a life-threatening disease associated with high mortality and morbidity worldwide. We sought to determine how socioeconomic factors might influence its epidemiology, clinical presentation, investigation and management, and outcome, in a large international multicentre registry. Methods and results The EurObservational Programme (EORP) of the European Society of Cardiology EURO-ENDO (European Infective Endocarditis) registry comprises a prospective cohort of 3113 adult patients admitted for IE in 156 hospitals in 40 countries between January 2016 and March 2018. Patients were separated in three groups, according to World Bank economic stratification [group 1: high income (75.6%); group 2: upper-middle income (15.4%); group 3: lower-middle income (9.1%)]. Group 3 patients were younger [median age (interquartile range, IQR): group 1, 66 (53-75) years; group 2, 57 (41-68) years; group 3, 33 (26-43) years; P < 0.001] with a higher frequency of smokers, intravenous drug use, and human immunodeficiency virus infection (all P < 0.001) and presented later [median (IQR) days since symptom onset: group 1, 12 (3-35); group 2, 19 (6-54); group 3, 31 (12-62); P < 0.001] with a higher likelihood of developing congestive heart failure (13.6%, 11.1%, and 22.6%, respectively; P < 0.001) and persistent fever (9.8%, 14.2%, and 27.9%, respectively; P < 0.001). Among 2157 (69.3%) patients with theoretical indication for cardiac surgery, surgery was performed less frequently in group 3 patients (75.5%, 76.8%, and 51.3%, respectively; P < 0.001), who also demonstrated the highest mortality (15.0%, 23.0%, and 23.7%, respectively; P < 0.001). Conclusion Socioeconomic factors influence the clinical profile of patients presenting with IE across the world. Despite younger age, patients from the poorest countries presented with more frequent complications and higher mortality associated with delayed diagnosis and lower use of surgery.

Published
2023

50. Linearity of quantum probability measure and Hardy's model

Author

Fujikawa, Kazuo, Oh, C. H., and Zhang, Chengjie

Subjects
Quantum Physics
Abstract

We re-examine d=4 hidden-variables-models for a system of two spin-$1/2$ particles in view of the concrete model of Hardy, who analyzed the criterion of entanglement without referring to inequality. The basis of our analysis is the linearity of the probability measure related to the Born probability interpretation, which excludes non-contextual hidden-variables models in $d\geq 3$. To be specific, we note the inconsistency of the non-contextual hidden-variables model in $d=4$ with the linearity of the quantum mechanical probability measure in the sense $\langle\psi|{\bf a}\cdot {\bf \sigma}\otimes{\bf b}\cdot {\bf \sigma}|\psi\rangle+\langle\psi|{\bf a}\cdot {\bf \sigma}\otimes{\bf b}^{\prime}\cdot {\bf \sigma}|\psi\rangle=\langle\psi|{\bf a}\cdot {\bf \sigma}\otimes ({\bf b}+{\bf b}^{\prime})\cdot {\bf \sigma}|\psi\rangle$ for non-collinear ${\bf b}$ and ${\bf b}^{\prime}$. It is then shown that Hardy's model in $d=4$ does not lead to a unique mathematical expression in the demonstration of the discrepancy of local realism (hidden-variables model) with entanglement and thus his proof is incomplete. We identify the origin of this non-uniqueness with the non-uniqueness of translating quantum mechanical expressions into expressions in hidden-variables models, which results from the failure of the above linearity of the probability measure. In contrast, if the linearity of the probability measure is strictly imposed, which is tantamount to asking that the non-contextual hidden-variables model in $d=4$ gives the CHSH inequality $|\langle B\rangle|\leq 2$ uniquely, it is shown that the hidden-variables model can describe only separable quantum mechanical states; this conclusion is in perfect agreement with the so-called Gisin's theorem which states that $|\langle B\rangle|\leq 2$ implies separable states., Comment: 15 pages. To appear in Int. J. Mod. Phys. A

Published
2013
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