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123 results on '"Legré M"'

8. Long term performance of the SwissQuantum quantum key distribution network in a field environment

Author

Stucki, D., Legre, M., Buntschu, F., Clausen, B., Felber, N., Gisin, N., Henzen, L., Junod, P., Litzistorf, G., Monbaron, P., Monat, L., Page, J. -B., Perroud, D., Ribordy, G., Rochas, A., Robyr, S., Tavares, J., Thew, R., Trinkler, P., Ventura, S., Voirol, R., Walenta, N., and Zbinden, H.

Subjects
Quantum Physics
Abstract

In this paper, we report on the performance of the SwissQuantum quantum key distribution (QKD) network. The network was installed in the Geneva metropolitan area and run for more than one and a half years, from the end of March 2009 to the beginning of January 2011. The main goal of this experiment was to test the reliability of the quantum layer over a long period of time in a production environment. A key management layer has been developed to manage the key between the three nodes of the network. This QKD-secure network was used by end-users through an application layer., Comment: Published in New Journal of Physics, http://stacks.iop.org/1367-2630/13/123001

Published
2012
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9. Field test of quantum key distribution in the Tokyo QKD Network

Author

Sasaki, M., Fujiwara, M., Ishizuka, H., Klaus, W., Wakui, K., Takeoka, M., Tanaka, A., Yoshino, K., Nambu, Y., Takahashi, S., Tajima, A., Tomita, A., Domeki, T., Hasegawa, T., Sakai, Y., Kobayashi, H., Asai, T., Shimizu, K., Tokura, T., Tsurumaru, T., Matsui, M., Honjo, T., Tamaki, K., Takesue, H., Tokura, Y., Dynes, J. F., Dixon, A. R., Sharpe, A. W., Yuan, Z. L., Shields, A. J., Uchikoga, S., Legre, M., Robyr, S., Trinkler, P., Monat, L., Page, J. -B., Ribordy, G., Poppe, A., Allacher, A., Maurhart, O., Langer, T., Peev, M., and Zeilinger, A.

Subjects
Quantum Physics
Abstract

A novel secure communication network with quantum key distribution in a metropolitan area is reported. Different QKD schemes are integrated to demonstrate secure TV conferencing over a distance of 45km, stable long-term operation, and application to secure mobile phones., Comment: 21 pages, 19 figures

Published
2011
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10. SiPM used as fast Photon-Counting Module and for Multiphoton Detection

Author

Eraerds, P., Legre, M., Rochas, A., Zbinden, H., and Gisin, N.

Subjects
Quantum Physics, Astrophysics, Physics - Biological Physics, Physics - Instrumentation and Detectors
Abstract

We demonstrate fast counting and multiphoton detection abilities of a Silicon Photo Multiplier (SiPM). In fast counting mode we are able to detect two consecutive photons separated by only 2.3 ns corresponding to 430 MHz. The counting efficiency for small optical intensities at a wavelength of 532 nm was found to be around 8.3% with a dark count rate of 50 kHz at T=-7 degrees Celsius. Using the SiPM in multiphoton detection mode, we find a good signal discrimination for different numbers of simultaneous detected photons., Comment: 11 pages, 13 figures

Published
2007
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11. Distribution of time-bin qubits over 50 km of optical fiber

Author

Marcikic, I., de Riedmatten, H., Tittel, W., Zbinden, H., Legre, M., and Gisin, N.

Subjects
Quantum Physics
Abstract

We report experimental distribution of time-bin entangled qubits over 50 km of optical fibers. Using actively stabilized preparation and measurement devices we demonstrate violation of the CHSH Bell inequality by more than 15 standard deviations without removing the detector noise. In addition we report a proof of principle experiment of quantum key distribution over 50 km of optical fibers using entangled photon., Comment: 4 pages, 4 figures

Published
2004
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12. Quantum measurement of the degree of polarization of a light beam

Author

Legre, M., Wegmuller, M., and Gisin, N.

Subjects
Quantum Physics
Abstract

We demonstrate a coherent quantum measurement for the determination of the degree of polarization (DOP). This method allows to measure the DOP in the presence of fast polarization state fluctuations, difficult to achieve with the typically used polarimetric technique. A good precision of the DOP measurements is obtained using 8 type II nonlinear crystals assembled for spatial walk-off compensation., Comment: 4 pages, 3 figures

Published
2003
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14. Perception des enjeux environnementaux au bloc opératoire d’otorhinolaryngologie : étude préliminaire

Author

Carsuzaa, F., Fieux, M., Bartier, S., Fath, L., Alexandru, M., Legré, M., and Favier, V.

Abstract

Évaluer la perception des enjeux environnementaux parmi les professionnels de santé travaillant dans les blocs opératoires d’oto-rhino-laryngologie (ORL) et comparer la perception des enjeux environnementaux prioritaires selon les catégories d’âge, la formation initiale des professionnels de santé et leurs missions au sein des blocs opératoires.

Published
2024
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25. Perception de la formation en chirurgie endoscopique endonasale par les internes d’oto-rhino-laryngologie français : analyse STROBE

Author

Bartier, S., Fieux, M., Carsuzaa, F., Coste, A., Legré, M., Alexandru, M., Favier, V., and Fath, L.

Abstract

Analyser la perception de la formation en chirurgie endoscopique endonasale par les étudiants en Diplôme d’Études Spécialisées (DES) d’Oto-Rhino-Laryngologie et Chirurgie Cervico-Faciale (ORL&CCF) en France.

Published
2024
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26. Practical aspects of quantum coin flipping

Author

Pappa, Anna, Jouguet, Paul, Lawson, Thomas, Legré, M., Trinkler, P., Kerenidis, Iordanis, Diamanti, Eleni, Information Quantique et Applications (IQA), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Département Informatique et Réseaux (INFRES), Télécom ParisTech, and HAL, TelecomParis

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

29. A fast and versatile quantum key distribution system with hardware key distillation and wavelength multiplexing

Author

Walenta, N, primary, Burg, A, additional, Caselunghe, D, additional, Constantin, J, additional, Gisin, N, additional, Guinnard, O, additional, Houlmann, R, additional, Junod, P, additional, Korzh, B, additional, Kulesza, N, additional, Legré, M, additional, Lim, C W, additional, Lunghi, T, additional, Monat, L, additional, Portmann, C, additional, Soucarros, M, additional, Thew, R T, additional, Trinkler, P, additional, Trolliet, G, additional, Vannel, F, additional, and Zbinden, H, additional

Published
2014
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33. Global Healthgrid: e-Science Meets Biomedical Informatics

Author

T. Solomonides, J.C. Silverstein, J. Saltz, Y. Legré, M. Kratz, I. Foster, V. Breton, J.R. Beck and T. Solomonides, J.C. Silverstein, J. Saltz, Y. Legré, M. Kratz, I. Foster, V. Breton, J.R. Beck

Subjects
Bioinformatics, Medical informatics, Computational biology, Medical informatics--Congresses, Information science--Congresses, Medicine--Data processing
Abstract

Reflects the diversity of mature practice: Advancing Virtual Communities, that offers a glimpse of the kind of communities brought together by means of collaboration grids; Public Health Informatics, that explores the diffusion of grid concepts and technologies in health informatics; and, Translational Bioinformatics.

Published
2008

34. Long-term performance of the SwissQuantum quantum key distribution network in a field environment

Author

Stucki, D, primary, Legré, M, additional, Buntschu, F, additional, Clausen, B, additional, Felber, N, additional, Gisin, N, additional, Henzen, L, additional, Junod, P, additional, Litzistorf, G, additional, Monbaron, P, additional, Monat, L, additional, Page, J-B, additional, Perroud, D, additional, Ribordy, G, additional, Rochas, A, additional, Robyr, S, additional, Tavares, J, additional, Thew, R, additional, Trinkler, P, additional, Ventura, S, additional, Voirol, R, additional, Walenta, N, additional, and Zbinden, H, additional

Published
2011
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35. Field test of quantum key distribution in the Tokyo QKD Network

Author

Sasaki, M., primary, Fujiwara, M., additional, Ishizuka, H., additional, Klaus, W., additional, Wakui, K., additional, Takeoka, M., additional, Miki, S., additional, Yamashita, T., additional, Wang, Z., additional, Tanaka, A., additional, Yoshino, K., additional, Nambu, Y., additional, Takahashi, S., additional, Tajima, A., additional, Tomita, A., additional, Domeki, T., additional, Hasegawa, T., additional, Sakai, Y., additional, Kobayashi, H., additional, Asai, T., additional, Shimizu, K., additional, Tokura, T., additional, Tsurumaru, T., additional, Matsui, M., additional, Honjo, T., additional, Tamaki, K., additional, Takesue, H., additional, Tokura, Y., additional, Dynes, J. F., additional, Dixon, A. R., additional, Sharpe, A. W., additional, Yuan, Z. L., additional, Shields, A. J., additional, Uchikoga, S., additional, Legré, M., additional, Robyr, S., additional, Trinkler, P., additional, Monat, L., additional, Page, J.-B., additional, Ribordy, G., additional, Poppe, A., additional, Allacher, A., additional, Maurhart, O., additional, Länger, T., additional, Peev, M., additional, and Zeilinger, A., additional

Published
2011
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36. Tokyo QKD Network and the evolution to Secure Photonic Network

Author

Sasaki, M., primary, Fujiwra, M., additional, Ishizuka, H., additional, Klaus, W., additional, Wakui, K., additional, Takeoka, M., additional, Tanaka, A., additional, Yoshino, K., additional, Nambu, Y., additional, Takahashi, S., additional, Tajima, A., additional, Tomita, A., additional, Domeki, T., additional, Hasegawa, T., additional, Sakai, Y., additional, Kobayashi, H., additional, Asai, T., additional, Shimizu, K., additional, Tokura, T., additional, Tsurumaru, T., additional, Matsui, M., additional, Honjo, T., additional, Tamaki, K., additional, Takesue, H., additional, Tokura, Y., additional, Dynes, J. F., additional, Dixon, A., additional, Sharpe, A. W., additional, Yuan, Z. L., additional, Shields, A. J., additional, Uchikoga, S., additional, Legré, M., additional, Robyr, S., additional, Trinkler, P., additional, Monat, L., additional, Page, J.-B., additional, Ribordy, G., additional, Poppe, A., additional, Allacher, A., additional, Maurhart, O., additional, Länger, T., additional, Peev, M., additional, and Zeilinger, A., additional

Published
2011
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38. The SECOQC quantum key distribution network in Vienna

Author

Peev, M, primary, Pacher, C, additional, Alléaume, R, additional, Barreiro, C, additional, Bouda, J, additional, Boxleitner, W, additional, Debuisschert, T, additional, Diamanti, E, additional, Dianati, M, additional, Dynes, J F, additional, Fasel, S, additional, Fossier, S, additional, Fürst, M, additional, Gautier, J-D, additional, Gay, O, additional, Gisin, N, additional, Grangier, P, additional, Happe, A, additional, Hasani, Y, additional, Hentschel, M, additional, Hübel, H, additional, Humer, G, additional, Länger, T, additional, Legré, M, additional, Lieger, R, additional, Lodewyck, J, additional, Lorünser, T, additional, Lütkenhaus, N, additional, Marhold, A, additional, Matyus, T, additional, Maurhart, O, additional, Monat, L, additional, Nauerth, S, additional, Page, J-B, additional, Poppe, A, additional, Querasser, E, additional, Ribordy, G, additional, Robyr, S, additional, Salvail, L, additional, Sharpe, A W, additional, Shields, A J, additional, Stucki, D, additional, Suda, M, additional, Tamas, C, additional, Themel, T, additional, Thew, R T, additional, Thoma, Y, additional, Treiber, A, additional, Trinkler, P, additional, Tualle-Brouri, R, additional, Vannel, F, additional, Walenta, N, additional, Weier, H, additional, Weinfurter, H, additional, Wimberger, I, additional, Yuan, Z L, additional, Zbinden, H, additional, and Zeilinger, A, additional

Published
2009
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