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2. Quantum non-demolition detection of an itinerant microwave photon

Author

Kono, S., Koshino, K., Tabuchi, Y., Noguchi, A., and Nakamura, Y.

Subjects
Quantum Physics
Abstract

Photon detectors are an elementary tool to measure electromagnetic waves at the quantum limit and are heavily demanded in the emerging quantum technologies such as communication, sensing, and computing. Of particular interest is a quantum non-demolition (QND) type detector, which projects the quantum state of a photonic mode onto the photon-number basis without affecting the temporal or spatial properties. This is in stark contrast to conventional photon detectors which absorb a photon to trigger a `click' and thus inevitably destroy the photon. The long-sought QND detection of a flying photon was recently demonstrated in the optical domain using a single atom in a cavity. However, the counterpart for microwaves has been elusive despite the recent progress in microwave quantum optics using superconducting circuits. Here, we implement a deterministic entangling gate between a superconducting qubit and a propagating microwave pulse mode reflected by a cavity containing the qubit. Using the entanglement and the high-fidelity qubit readout, we demonstrate a QND detection of a single photon with the quantum efficiency of 0.84, the photon survival probability of 0.87, and the dark-count probability of 0.0147. Our scheme can be a building block for quantum networks connecting distant qubit modules as well as a microwave photon counting device for multiple-photon signals., Comment: 16 pages, 12 figures, 1 table

Published
2017
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3. Information-to-work conversion by Maxwell's demon in a superconducting circuit-QED system

Author

Masuyama, Y., Funo, K., Murashita, Y., Noguchi, A., Kono, S., Tabuchi, Y., Yamazaki, R., Ueda, M., and Nakamura, Y.

Subjects
Quantum Physics
Abstract

The gedanken experiment of Maxwell's demon has led to the studies concerning the foundations of thermodynamics and statistical mechanics. The demon measures fluctuations of a system's observable and converts the information gain into work via feedback control. Recent developments have elucidated the relationship between the acquired information and the entropy production and generalized the second law of thermodynamics and the fluctuation theorems. Here we extend the scope to a system subject to quantum fluctuations by exploiting techniques in superconducting circuit quantum electrodynamics. We implement Maxwell's demon equipped with coherent control and quantum nondemolition projective measurements on a superconducting qubit, where we verify the generalized integral fluctuation theorems and demonstrate the information-to-work conversion. This reveals the potential of superconducting circuits as a versatile platform for investigating quantum information thermodynamics under feedback control, which is closely linked to quantum error correction for computation and metrology.

Published
2017
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4. Nonclassical photon number distribution in a superconducting cavity under a squeezed drive

Author

Kono, S., Masuyama, Y., Ishikawa, T., Tabuchi, Y., Yamazaki, R., Usami, K., Koshino, K., and Nakamura, Y.

Subjects
Quantum Physics
Abstract

A superconducting qubit in the strong dispersive regime of a circuit quantum electrodynamics system is a powerful probe for microwave photons in a cavity mode. In this regime, a qubit spectrum is split into multiple peaks, with each peak corresponding to an individual photon number in the cavity (discrete ac Stark shift). Here, we measure the qubit spectrum in the cavity that is driven continuously with a squeezed vacuum field generated by a Josephson parametric amplifier. By fitting the qubit spectrum with a model which takes into account the finite qubit excitation power, the photon number distribution, which is dissimilar from the apparent peak area ratio in the spectrum, is determined. The photon number distribution shows the even-odd photon number oscillation and quantitatively fulfills Klyshko's criterion for the nonclassicality., Comment: 10 pages, 11 figures, 1 table

Published
2017
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6. Dietary patterns and colorectal cancer risk in middle-aged adults: A large population-based prospective cohort study

Author

Tsugane, S., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Suzuki, H., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Fujita, R., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Inoue, M., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Isobe, T., Sato, Y., Shin, Sangah, Saito, Eiko, Sawada, Norie, Ishihara, Junko, Takachi, Ribeka, Nanri, Akiko, Shimazu, Taichi, Yamaji, Taiki, Iwasaki, Motoki, Sasazuki, Shizuka, Inoue, Manami, and Tsugane, Shoichiro

Published
2018
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7. Plasma levels of n-3 fatty acids and risk of coronary heart disease among Japanese: The Japan Public Health Center-based (JPHC) study

Author

Tsugane, S., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., Goto, A., Hidaka, A., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Suzuki, H., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Doi, M., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Fujita, R., Sou, Y., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Inoue, M., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Isobe, T., Sato, Y., Hamazaki, Kei, Iso, Hiroyasu, Eshak, Ehab S., Ikehara, Satoyo, Ikeda, Ai, Iwasaki, Motoki, Hamazaki, Tomohito, and Tsugane, Shoichiro

Published
2018
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16. Association of green tea consumption with mortality due to all causes and major causes of death in a Japanese population: the Japan Public Health Center-based Prospective Study (JPHC Study)

Author

Tsugane, S., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Inoue, M., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Saito, Eiko, Inoue, Manami, Sawada, Norie, Shimazu, Taichi, Yamaji, Taiki, Iwasaki, Motoki, Sasazuki, Shizuka, Noda, Mitsuhiko, Iso, Hiroyasu, and Tsugane, Shoichiro

Published
2015
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17. Alcohol consumption and bladder cancer risk with or without the flushing response: The Japan Public Health Center‐based Prospective Study

Author

Masaoka, Hiroyuki, Matsuo, Keitaro, Sawada, Norie, Yamaji, Taiki, Goto, Atsushi, Shimazu, Taichi, Iwasaki, Motoki, Inoue, Manami, Eto, Masatoshi, Tsugane, Shoichiro, Tsugane, S., Sawada, N., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Suzuki, H., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Matsui, K., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Fujita, R, Sakiyama, H., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Inoue, M., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Isobe, T., and Sato, Y.

Published
2017
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18. Smoking and alcohol and subsequent risk of myelodysplastic syndromes in Japan: the Japan Public Health Centre‐based Prospective Study

Author

Ugai, Tomotaka, Matsuo, Keitaro, Sawada, Norie, Iwasaki, Motoki, Yamaji, Taiki, Shimazu, Taichi, Sasazuki, Shizuka, Inoue, Manami, Kanda, Yoshinobu, Tsugane, Shoichiro, Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Suzuki, H., Miyajima, Y., Suzuki, N, Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Matsui, K., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Fujita, R., Sakiyama, H., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Isobe, T., and Sato, Y.

Published
2017
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19. High serum total cholesterol is associated with suicide mortality in Japanese women

Author

Svensson, T., Inoue, M., Sawada, N., Charvat, H., Mimura, M., Tsugane, S., Iwasaki, M., Sasazuki, S., Yamaji, T., Shimazu, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Suzuki, H., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Matsui, K., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Fujita, R, Sakiyama, H., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F, Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M, Ichii, M, Takano, M., Tsubono, Y., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., Akiba, S., Isobe, T., and Sato, Y.

Published
2017
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22. Relationship between lenticular power and refractive error in children with hyperopia

Author

Tomomatsu T, Kono S, Arimura S, Tomomantsu Y, Matsumura T, Takihara Y, Inatani M, and Takamura Y

Subjects
Ophthalmology, RE1-994
Abstract

Takeshi Tomomatsu, Shinjiro Kono, Shogo Arimura, Yoko Tomomatsu, Takehiro Matsumura, Yuji Takihara, Masaru Inatani, Yoshihiro TakamuraDepartment of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Fukuiken, JapanObjectives: To evaluate the contribution of axial length, and lenticular and corneal power to the spherical equivalent refractive error in children with hyperopia between 3 and 13 years of age, using noncontact optical biometry.Methods: There were 62 children between 3 and 13 years of age with hyperopia (+2 diopters [D] or more) who underwent automated refraction measurement with cycloplegia, to measure spherical equivalent refractive error and corneal power. Axial length was measured using an optic biometer that does not require contact with the cornea. The refractive power of the lens was calculated using the Sanders-Retzlaff-Kraff formula. Single regression analysis was used to evaluate the correlation among the optical parameters.Results: There was a significant positive correlation between age and axial length (P = 0.0014); however, the degree of hyperopia did not decrease with aging (P = 0.59). There was a significant negative correlation between age and the refractive power of the lens (P = 0.0001) but not that of the cornea (P = 0.43). A significant negative correlation was observed between the degree of hyperopia and lenticular power (P < 0.0001).Conclusion: Although this study is small scale and cross sectional, the analysis, using noncontact biometry, showed that lenticular power was negatively correlated with refractive error and age, indicating that lower lens power may contribute to the degree of hyperopia.Keywords: emmetropization, axial length

Published
2013

23. P130 Comparison of the clinical course of Ulcerative Colitis according to the presence or absence of clinical symptoms at the time of diagnosis

Author

Madarame, A, primary, Fukuzawa, M, additional, Uchida, K, additional, Nemoto, D, additional, Shinohara, H, additional, Yamanishi, F, additional, Matsumoto, S, additional, Suzuki, Y, additional, Muramatsu, T, additional, Kagawa, Y, additional, Matsumoto, T, additional, Morise, T, additional, Yamaguchi, H, additional, Sugimoto, A, additional, Kono, S, additional, Yamauchi, Y, additional, Naito, S, additional, Kawai, T, additional, and Itoi, T, additional

Published
2022
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25. Fabrication of 2D NV Ensemble and its Spin Property Improvement

Author

Kanehisa, K., Tatsuishi, T., Sonoda, T., Kawakatsu, K., Hata, Y., Tanii , T., Shinobu, Onoda, Stacey, A., Isoya, J., Kono , S., and Kawarada , H.

Abstract

2次元NVアンサンブルの作製とスピン特性向上に関する研究, 14th International Conference on New Diamond and Nano Carbons 2020/2021

Published
2021

26. Coping strategies and risk of cardiovascular disease incidence and mortality: the Japan Public Health Center-based prospective Study

Author

Svensson, Thomas, Inoue, Manami, Sawada, Norie, Yamagishi, Kazumasa, Charvat, Hadrien, Saito, Isao, Kokubo, Yoshihiro, Iso, Hiroyasu, Kawamura, Noriyuki, Shibuya, Kenji, Mimura, Masaru, Tsugane, Shoichiro, Tsugane, S., Tsugane, S., Sawada, N., Iwasaki, M., Sasazuki, S., Shimazu, T., Yamaji, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., Kokubo, Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Sato, H., Roppongi, Y., Takashima, T., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Ito, Y., Komatsu, S., Minamizono, T., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kobayashi, K., Tsukada, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Yamato, S., Matsui, K., Abe, T., Katagiri, M., Suzuki, M., Matsui, K., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Sueta, H., Doi, H., Urata, M., Okamoto, N., Ide, F., Goto, H., Sakiyama, H., Onga, N., Takaesu, H., Uehara, M., Nakasone, T., Yamakawa, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Tsubono, Y., Suzuki, K., Honda, Y., Yamagishi, K., Sakurai, S., Tsuchiya, N., Kabuto, M., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Akabane, M., Kadowaki, T., Inoue, M., Noda, M., Mizoue, T., Kawaguchi, Y., Takashima, Y., Yoshida, Y., Nakamura, K., Takachi, R., Ishihara, J., Matsushima, S., Natsukawa, S., Shimizu, H., Sugimura, H., Tominaga, S., Hamajima, N., Iso, H., Sobue, T., Iida, M., Ajiki, W., Ioka, A., Sato, S., Maruyama, E., Konishi, M., Okada, K., Saito, I., Yasuda, N., Kono, S., and Akiba, S.

Published
2016
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40. Transformation of Nitrogen Adsorbed on (111) Diamond Surface into Highly Aligned 2-Dimensional NV Ensemble

Author

Tatsuishi, T., Sonoda, T., Kanehisa, K., Kawakatsu, K., Hata, Y., Nagaoka, K., Ishii, Y., Tanii, T., Onoda, Shinobu, Stacey, A., Isoya, J., Kono, S., and Kawarada, H.

Abstract

Nitrogen vacancy (NV) center in diamond is expected as a magnetic sensor with high sensitivity at room temperature and detection of 1H spins out of the substrate by single NV center was reported [1]. For improvement of magnetic sensitivity, aligned shallow NV ensemble is required since the magnetic sensitivity is inversely proportional to a square root of number of NV centers contributing to the measurement [2, 3]. Delta-doping of nitrogen (N) was performed by diamond growth on N-terminated (001) diamond and estimated 2D concentration of NV centers was 1 x 1011 cm-2 [4]. This method can control the depth of NV ensemble precisely unlike ion implantation which are popular methods to fabricate NV ensemble. However, NV centers in the (001) delta-doping layer would be not aligned because possibility of each four sites adjacent to N becoming a vacancy are equivalent. In the case of (111) delta-doping layer, NV centers will be aligned because a top site is more preferable to become a vacancy than other three equivalent sites. Recently, we established the method to fabricate N-terminated diamond with high coverage without any damage on the surface [5]. We succeeded to fabricate aligned two-dimensional NV ensemble from N-terminated (111) diamond with half mono layer coverage embedded by high purity (111) diamond film., The 2nd International Forum on Quantum Metrology and Sensing (IFQMS)

Published
2019

44. High power water switches: postbreakdown phenomena and dielectric recovery

Author

Xiao, S., Kolb, J., Kono, S., Katsuki, S., Joshi, R.P., Laroussi, M., and Schoenbach, K.H.

Subjects
Switches -- Research, Semiconductor device, Business, Electronics, Electronics and electrical industries
Abstract

The physical processes following the electrical breakdown of water between planar and hemispherical electrodes separated by a sub-millimeter gap have been studied using electrical and optical diagnostics. The expanding plasma column after breakdown generates first shockwaves and at a later stage a vapor bubble which expands for about 200 [micro]s and then decays with a time constant of 1 ms. The bubble decay time determines the dielectric recovery of the switch as has been shown with pulse-probe experiments. Index Terms--Water, electrical breakdown, pulsed power switching, shockwaves, dielectric recovery.

Published
2004

45. Clinical, molecular, and PET study of a case of aceruloplasminaemia presenting with focal cranial dyskinesia

Author

Haemers, I., Kono, S., Goldman, S., Gitlin, J.D., and Pandolfo, M.

Subjects
Nervous system diseases -- Research -- Case studies -- Physiological aspects, Health, Psychology and mental health, Physiological aspects, Case studies, Research
Abstract

J Neurol Neurosurg Psychiatry 2004;75:334-337. doi: 10.1136/jnnp.2003.017434 Aceruloplasminaemia is a rare recessive disorder caused by mutations in the gene encoding the multicopper ferroxidase ceruloplasmin, thought to be involved in cellular [...]

Published
2004

46. Dietary intake of saturated fatty acids and incident stroke and coronary heart disease in Japanese communities: the JPHC Study

Author

Yamagishi, Kazumasa, Iso, Hiroyasu, Kokubo, Yoshihiro, Saito, Isao, Yatsuya, Hiroshi, Ishihara, Junko, Inoue, Manami, Tsugane, Shoichiro, Sobue, T., Hanaoka, T., Ogata, J., Baba, S., Mannami, T., Okayama, A., K., Y., Miyakawa, K., Saito, F., Koizumi, A., Sano, Y., Hashimoto, I., Ikuta, T., Tanaba, Y., Miyajima, Y., Suzuki, N., Nagasawa, S., Furusugi, Y., Nagai, N., Sanada, H., Hatayama, Y., Kobayashi, F., Uchino, H., Shirai, Y., Kondo, T., Sasaki, R., Watanabe, Y., Miyagawa, Y., Kobayashi, Y., Machida, M., Kishimoto, Y., Takara, E., Fukuyama, T., Kinjo, M., Irei, M., Sakiyama, H., Imoto, K., Yazawa, H., Seo, T., Seiko, A., Ito, F., Shoji, F., Saito, R., Murata, A., Minato, K., Motegi, K., Fujieda, T., Abe, T., Katagiri, M., Suzuki, M., Matsui, K., Doi, M., Terao, A., Ishikawa, Y., Tagami, T., Doi, H., Urata, M., Okamoto, N., Ide, F., Sueta, H., Sakiyama, H., Onga, N., Takaesu, H., Uehara, M., Horii, F., Asano, I., Yamaguchi, H., Aoki, K., Maruyama, S., Ichii, M., Takano, M., Matsushima, S., Natsukawa, S., Akabane, M., Konishi, M., Okada, K., Honda, Y., Sakurai, K. Y. S., Tsuchiya, N., Sugimura, H., Tsubono, Y., Kabuto, M., Tominaga, S., Iida, M., Ajiki, W., Ioka, A., Sato, S., Yasuda, N., Nakamura, K., Kono, S., Suzuki, K., Takashima, Y., Yoshida, M., Maruyama, E., Yamaguchi, M., Matsumura, Y., Sasaki, S., Watanabe, S., Kadowaki, T., Noda, M., Mizoue, T., Kawaguchi, Y., and Shimizu, H.

Published
2013
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