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Geometric entanglement of a photon and spin qubits in diamond
http://hdl.handle.net/10131/00014157
http://hdl.handle.net/10131/000141577d7091a5-134d-4509-bc54-b12cb6c918f6
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-01-06 | |||||
タイトル | ||||||
タイトル | Geometric entanglement of a photon and spin qubits in diamond | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Quantum information, Qubits, Single photons and quantum effects | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Yuhei, Sekiguchi
× Yuhei, Sekiguchi× Yuki, Yasui× Kazuya, Tsurumoto× Yuta, Koga× Raustin, Reyes× Hideo, Kosaka |
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著者所属 | ||||||
Institute of Advanced Sciences, Yokohama National University | ||||||
著者所属 | ||||||
Department of Physics, Graduate School of Engineering Science, Yokohama National University | ||||||
著者所属 | ||||||
Department of Physics, Graduate School of Engineering Science, Yokohama National University | ||||||
著者所属 | ||||||
Department of Physics, Graduate School of Engineering Science, Yokohama National University | ||||||
著者所属 | ||||||
Department of Physics, Graduate School of Engineering Science, Yokohama National University | ||||||
著者所属 | ||||||
Institute of Advanced Sciences, Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Geometric nature, which appears in photon polarization, also appears in spin polarization under a zero magnetic field. These two polarized quanta, one travelling in vacuum and the other staying in matter, behave the same as geometric quantum bits or qubits, which are promising for noise resilience compared to the commonly used dynamic qubits. Here we show that geometric photon and spin qubits are entangled upon spontaneous emission with the help of the spin − orbit entanglement inherent in a nitrogen-vacancy center in diamond. The geometric spin qubit is defined in a degenerate subsystem of spin triplet electrons and manipulated with a polarized microwave. An experiment shows an entanglement state fidelity of 86.8%. The demonstrated entangled emission, combined with previously demonstrated entangled absorption, generates purely geometric entanglement between remote matters in a process that is insensitive of time, frequency, and space mode matching, which paves the way for building a noise-resilient quantum repeater network or a quantum internet. | |||||
書誌情報 |
communications physics 巻 4, p. 264, 発行日 2021-12-15 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2399-3650 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1038/s42005-021-00767-1 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | Springer | |||||
関係URI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1038/s42005-021-00767-1 | |||||
関連名称 | https://doi.org/10.1038/s42005-021-00767-1 |