Otsuka Tomohiro

オオツカトモヒロ | Otsuka Tomohiro

Affiliation and department：
Job title： Associate Professor
Other affiliations (6)：

Tohoku University Research Institute of Electrical Communication Associate Professor
Tohoku University Department of Electrical Engineering, School of Engineering Associate Professor
Tohoku University Center for Science and Innovation in Spintronics Associate Professor
Tohoku University Associate Professor
Tohoku University Tohoku Quantum Alliance Co-director

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Homepage URL (2)： https://ja.qd.riec.tohoku.ac.jp/ , https://en.qd.riec.tohoku.ac.jp/

Research field (3)： Semiconductors, optical and atomic physics , Nano/micro-systems , Nanomaterials

Research keywords (8)： Spintronics , Quantum Device , Quantum Wire , Quantum Dot , Semiconductor Physics , Low Temperature Physics , Condensed Matter Physics , 量子情報処理プロジェクト

Research theme for competitive and other funds (8)：

2022 - 2025 半導体量子ドットデバイスの放射線応答の調査と放射線検出器への利用
2021 - 2024 デコヒーレンスを活用した革新的量子技術の研究
2020 - 2023 Elucidation and control of hole spin dynamics in quantum structures
2019 - 2023 先進プラズマ活用1次元ナノカーボン材料の完全原子配列制御合成と革新的応用開拓
2017 - 2019 スピン変換研究に向けた電気的超高速局所スピンプローブの開発と応用

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Papers (68)：

Yui Muto, Takumi Nakaso, Motoya Shinozaki, Takumi Aizawa, Takahito Kitada, Takashi Nakajima, Matthieu R. Delbecq, Jun Yoneda, Kenta Takeda, Akito Noiri, et al. Visual explanations of machine learning model estimating charge states in quantum dots. APL Machine Learning. 2024. 2. 2
Yoshihiro Fujiwara, Motoya Shinozaki, Kazuma Matsumura, Kosuke Noro, Riku Tataka, Shoichi Sato, Takeshi Kumasaka, Tomohiro Otsuka. Wide dynamic range charge sensor operation by high-speed feedback control of radio-frequency reflectometry. Applied Physics Letters. 2023. 123. 21. 213502-1-213502-7
Kenji Shibata, Masaki Yoshida, Kazuhiko Hirakawa, Tomohiro Otsuka, Satria Zulkarnaen Bisri, Yoshihiro Iwasa. Single PbS colloidal quantum dot transistors. Nature Communications. 2023. 14. 7486-1-7486-8
Tomoya Johmen, Motoya Shinozaki, Yoshihiro Fujiwara, Takumi Aizawa, Tomohiro Otsuka. Radio-Frequency Reflectometry in Bilayer Graphene Devices Utilizing Microscale Graphite Back-Gates. Physical Review Applied. 2023. 20. 1
Kazuma Matsumura, Takaya Abe, Takahito Kitada, Takeshi Kumasaka, Norikazu Ito, Taketoshi Tanaka, Ken Nakahara, Tomohiro Otsuka. Channel length dependence of the formation of quantum dots in GaN/AlGaN FETs. Applied Physics Express. 2023. 16. 7. 075003-075003

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MISC (35)：

中曽拓, 篠崎基矢, 相澤拓海, 北田孝仁, 武藤由依, 中島峻, DELBECQ Matthieu R., 米田淳, 武田健太, 野入亮人, et al. Charge state estimation of quantum dots by machine learning. 日本物理学会講演概要集(CD-ROM). 2020. 75. 2
伊藤匠, 大塚朋廣, 中島峻, DELBECQ Matthieu, 天羽真一, 米田淳, 武田健太, 野入亮人, ALLISON Giles, LUDWIG Arne, et al. 微小磁石ESRに用いる局所磁場パラメータの解析. 日本物理学会講演概要集(CD-ROM). 2019. 74. 1
野入亮人, 中島峻, 川崎賢人, 米田淳, STANO Peter, 天羽真一, 大塚朋廣, 武田健太, DELBECQ Matthieu R., ALLISON Giles, et al. フィードバック制御による電子スピン量子ビットの操作忠実度の向上. 日本物理学会講演概要集(CD-ROM). 2019. 74. 1
伊藤匠, 大塚朋廣, 中島峻, DELBECQ Matthieu, 天羽真一, 米田淳, 武田健太, 野入亮人, ALLISON Giles, LUDWIG Arne, et al. 4重量子ドットにおける4電子スピン状態測定法の開発. 日本物理学会講演概要集(CD-ROM). 2019. 74. 2
野入亮人, 中島峻, 米田淳, DELBECQ Matthieu R., STANO Peter, 大塚朋廣, 武田健太, 天羽真一, ALLISON Giles, 川崎賢人, et al. 異種スピン量子ビット間の制御位相ゲート. 日本物理学会講演概要集(CD-ROM). 2018. 73. 1

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Lectures and oral presentations (197)：

Wide dynamic range charge sensing utilizing fast feedback control of radio-frequency reflectometry
(Symposium for the Core Research Clusters for Materials Science and Spintronics, and International Joint Graduate Program in Materials Science and Spintronics 2023)
Improving the generalization performance of the machine learning model estimating charge states in quantum dots
(Symposium for the Core Research Clusters for Materials Science and Spintronics, and International Joint Graduate Program in Materials Science and Spintronics, 2023)
Transport Property of a Few Quantum Dots Formed in Short Channel GaN FETs
(Symposium for the Core Research Clusters for Materials Science and Spintronics, and International Joint Graduate Program in Materials Science and Spintronics 2023)
Controllable fabrication of graphene nanoribbon-based quantum dot devices
(Symposium for the Core Research Clusters for Materials Science and Spintronics, and International Joint Graduate Program in Materials Science and Spintronics 2023)
High-frequency measurement in graphene nanostructures for quantum devices
(Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems, Superconducting SFQ VLSI Workshop, and International Workshop of Spin/Quantum Materials and Devices, 2023)

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Education (3)：

2007 - 2010 University of Tokyo (ISSP Katsumoto Lab) Ph.D. course, Department of Physics
2005 - 2007 University of Tokyo (ISSP Katsumoto Lab) Master course, Department of Physics
2003 - 2005 University of Tokyo Department of Physics

Professional career (1)：

Doctor of Science (University of Tokyo)

Work history (18)：

2022/04 - 現在 Tohoku University Advanced Institute for Materials Research Associate Professor
2020/08 - 現在 Tohoku University Tohoku Quantum Alliance Co-director
2019/12 - 現在 Organization for Advanced Studies Associate Professor
2019/04 - 現在 Center for Science and Innovation in Spintronics, Tohoku University Associate Professor
2018/04 - 現在 Department of Electrical Engineering, School of Engineering, Tohoku University Associate Professor

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Awards (12)：

2023/04 - Tohoku University Distinguished Researcher
2020/07 - Tohoku University Distinguished Researcher
2020/05 - Intelligent Cosmos Academic Foundation Intelligent Cosmos Academic Foundation Research Encouraging Award
2018/09 - RIEC, Tohoku University RIEC Research Exchange Meeting Good Presentation Award
2018/04 - Minister of Education, Culture, Sports, Science and Technology The Young Scientists’ Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology

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Association Membership(s) (1)：

THE PHYSICAL SOCIETY OF JAPAN

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