Koashi Masato

コアシマサト | Koashi Masato

Affiliation and department：
Job title：教授
Homepage URL (1)： http://kaken.nii.ac.jp/ja/r/90322099

Research field (1)： Semiconductors, optical and atomic physics

Research keywords (15)：量子演算 , 2光子干渉 , デコヒーレンス , 線形光学量子演算 , 量子光学 , 量子コンピューティング , 量子暗号 , 量子情報処理 , 無条件安全性 , 量子鍵配送 , パラメトリック光子対 , 相補性 , 不確定性関係 , 量子情報 , エンタングルメント

Research theme for competitive and other funds (10)：

2013 - 2016 Quantum interfaces for hybrid quantum information processing
2011 - 2014 Quantum information technology based on wavelength conversion of a photon
2009 - 2014 Light-based multi-qubit quantum control
2009 - 2014 Quantum Cybernetics Steering Committee
2008 - 2010 Quantum information processing based on complementarity in quantum mechanics

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Papers (187)：

Shinichiro Yamano, Takaya Matsuura, Yui Kuramochi, Toshihiko Sasaki, Masato Koashi. Finite-size security proof of binary-modulation continuous-variable quantum key distribution using only heterodyne measurement. Physica Scripta. 2024. 99. 2. 025115-025115
Takaya Matsuura, Shinichiro Yamano, Yui Kuramochi, Toshihiko Sasaki, Masato Koashi. Refined finite-size analysis of binary-modulation continuous-variable quantum key distribution. Quantum. 2023. 7. 1095-1095
Yoshifumi Nakata, Eyuri Wakakuwa, Masato Koashi. Black holes as clouded mirrors: the Hayden-Preskill protocol with symmetry. Quantum. 2023. 7. 928-928
Hongyi Zhou, Toshihiko Sasaki, Masato Koashi. Numerical method for finite-size security analysis of quantum key distribution. Physical Review Research. 2022. 4. 3
Hiroyuki Endo, Toshihiko Sasaki, Masahiro Takeoka, Mikio Fujiwara, Masato Koashi, Masahide Sasaki. Line-of-sight quantum key distribution with differential phase shift keying. New Journal of Physics. 2022. 24. 2. 025008-025008

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MISC (170)：

Kobayashi Toshiki, Yasui Shuto, Ikuta Rikizo, Miki Shigehito, Yamashita Taro, Fujiwara Mikio, Yamamoto Takashi, Koashi Masato, Sasaki Masahide, Wang Zhen, et al. 9aAZ-3 Observation of two-photon interference by using a frequency-domain beamsplitter. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 83-83
Yasui Shuto, Ikuta Rikizo, Kobayashi Toshiki, Miki Shigehito, Yamashita Taro, Terai Hirotaka, Fujiwara Mikio, Yamamoto Takashi, Koashi Masato, Sasaki Masahide, et al. 9aAZ-4 Frequency down-conversion of 637 nm light to the telecommunication band for non-classical light emitted from NV centers in diamond. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 83-83
Ikemachi Takuya, Ito Aki, Horikoshi Munekazu, Koashi Masato, Kuwata-Gonokami Makoto. 9aAW-7 Determination of the universal equation of state of s-wave interacting Fermi many-body system. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 80-80
Ikuta Rikizo, Kobayashi Toshiki, Kato Hiroshi, Miki Shigehito, Yamashita Taro, Terai Hirotaka, Fujiwara Mikio, Yamamoto Takashi, Koashi Masato, Sasaki Masahide, et al. 9aAZ-2 Observation of two output light pulses from a partial wavelength converter preserving phase of an input light at a single-photon level. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 82-82
Ito Aki, Ikemachi Takuya, Horikoshi Munekazu, Kuwata-Gonokami Makoto, Koashi Masato. 9aAW-8 Density fluctuation in an interacting Fermi gas. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 81-81

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Work history (5)：

2011/04 - 現在 The University of Tokyo The Graduate School of Engineering
2007/04 - 2011/03 Osaka University Graduate School of Engineering Science
2004/04 - 2007/03 Osaka University Graduate School of Engineering Science
1999/10 - 2004/03 The Graduate University for Advanced Studies School of Advanced Sciences
1995/12 - 1999/09 日本電信電話株式会社

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