Geometrical quantum optics for spontaneous quantum entanglement generation beween matters
| Project/Area Number |
16K13818
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | Yokohama National University |
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Principal Investigator |
Kosaka Hideo 横浜国立大学, 大学院工学研究院, 教授 (20361199)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | ハイブリッド量子 / スピントロニクス / 量子光学 / 量子エレクトロニクス / 量子もつれ / 光子 / 電子 / 核子 / 幾何学量子 / 量子操作 / 縮退スピン / キュービット / 光物性 / 量子情報物理 |
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| Outline of Final Research Achievements |
Geometric control of degenerate logic qubit, which is usually impossible, was carried out by coherent excitation of various degrees of freedom of matter using ultra-wideband coherent electromagnetic waves. We have developed a method to control various geometrical quantum states of photons and matter collectively by the cooperation of quantum entanglement inherent in matter and digital coherent control technology. Using the spin subsystem of single nitrogen vacancy center (NV center) in diamond degenerated by completely eliminating the magnetic field as a logical quantum, we performed geometrical quantum manipulation of spins by coherent electromagnetic waves through the interaction between different kinds of quantum, which is inherent in the material such as orbital spin interaction and hyperfine interaction in the material.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の特色は、通常は不可能な縮退した論理量子を操作する点にある。このような論理量子は、環境ノイズや操作誤差に強いことが予想される。いわゆるフォールトトレラントな論理量子を自在に操作し、異種の論理量子間の量子もつれ状態も自在に生成、制御、測定できると期待される。量子光学の技術をマイクロ波やラジオ波など電磁場全域に拡大することで、これまでコヒーレント光学、電子スピン共鳴、核スピン共鳴など個別に発展してきた学問領域を一括して扱うことによる相乗効果で量子光学により啓発された物性物理学の飛躍的な発展を促すという意義がある。
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Report
(5 results)
Research Products
(151 results)
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[Journal Article] Geometric spin echo under zero field2016
Author(s)
Yuhei Sekiguchi, Yusuke Komura, Shota Mishima, Touta Tanaka, Naeko Niikura and Hideo Kosaka
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Journal Title
Nature Communications
Volume: 7
Issue: 1
Pages: 11668-11668
DOI
NAID
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Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] 「通信波長狭線幅二光子源の周波数安定化システム開発」2018
Author(s)
池田幸平, 新関和哉, Mingyang Zheng, Xiuping Xie, 岡村幸太郎, 武井宣幸, 吉井一倫, 行方直人, 井上修一郎, 洪鋒雷, 小坂英男, 堀切智之
Organizer
日本物理学会第73回年次大会（2018年）
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[Presentation] “Dynamic initialization of a carbon nuclear spin with a coherent microwave around zero field”,2017
Author(s)
Koji Sato, Yuhei Sekiguci, Riyo Enyo, Yusuke Komura, Hiroki Kano, Ryota Kuroiwa, Kouyou Kuramitani, Takaaki Nakamura, Kodai Nagata, Naoki Ishida and Hideo Kosaka
Organizer
The 24th Congress of the International Commission for Optics(ICO24)
Related Report
Int'l Joint Research
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[Presentation] Geometric spin echo under zero field2016
Author(s)
Yuhei Sekiguchi, Yusuke Komura, Shota Mishima, Touta Tanaka, Naeko Niikura, and Hideo Kosaka
Organizer
13th International Conference on Quantum Communication, Measurement and Computing
Place of Presentation
Singapore
Year and Date
2016-07-04
Related Report
Int'l Joint Research
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