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ファイル | 記述 | サイズ | フォーマット | |
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PhysRevApplied.18.034058.pdf | 3.04 MB | Adobe PDF | 見る/開く |
タイトル: | Low-Frequency Quantum Sensing |
著者: | Herbschleb, E.D. Ohki, I. Morita, K. Yoshii, Y. Kato, H. Makino, T. Yamasaki, S. Mizuochi, N. |
著者名の別形: | 大木, 出 森田, 航希 芳井, 義治 加藤, 宙光 牧野, 俊晴 山崎, 聡 水落, 憲和 |
発行日: | Sep-2022 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review Applied |
巻: | 18 |
号: | 9 |
論文番号: | 034058 |
抄録: | Exquisite sensitivities are a prominent advantage of quantum sensors. Ramsey sequences allow precise measurement of direct current fields, while Hahn-echo-like sequences measure alternating current fields. However, the latter are restrained for use with high-frequency fields (above approximately 1kHz) due to finite coherence times, leaving less-sensitive noncoherent methods for the low-frequency range. In this paper, we propose to bridge the gap with a fitting-based algorithm with a frequency-independent sensitivity to coherently measure low-frequency fields. As the algorithm benefits from coherence-based measurements, its demonstration with a single nitrogen-vacancy center gives a sensitivity of 9.4nT Hz⁻⁰.⁵ for frequencies below about 0.6kHz down to near-constant fields. To inspect the potential in various scenarios, we apply the algorithm at a background field of tens of nTs, and we measure low-frequency signals via synchronization. |
記述: | 低周波信号の新規高感度量子センシング手法を開発 --NV量子センサを用いた核磁気共鳴(NMR)世界最小線幅を実証--. 京都大学プレスリリース. 2022-11-01. |
著作権等: | ©2022 American Physical Society |
URI: | http://hdl.handle.net/2433/276539 |
DOI(出版社版): | 10.1103/PhysRevApplied.18.034058 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2022-11-01 |
出現コレクション: | 学術雑誌掲載論文等 |
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