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ファイル | 記述 | サイズ | フォーマット | |
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PhysRevApplied.14.044033.pdf | 2.54 MB | Adobe PDF | 見る/開く |
タイトル: | Electrical Control for Extending the Ramsey Spin Coherence Time of Ion-Implanted Nitrogen-Vacancy Centers in Diamond |
著者: | Kobayashi, S. Matsuzaki, Y. Morishita, H. Miwa, S. Suzuki, Y. Fujiwara, M. Mizuochi, N. |
著者名の別形: | 小林, 悟士 森下, 弘樹 藤原, 正規 水落, 憲和 |
キーワード: | Noise Quantum control Quantum information with solid state qubits Quantum memories Quantum sensing Spin coherence Nitrogen vacancy centers in diamond Optically detected magnetic resonance Quantum Information Condensed Matter, Materials & Applied Physics |
発行日: | Oct-2020 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review Applied |
巻: | 14 |
号: | 4 |
論文番号: | 044033 |
抄録: | The extension of spin coherence times is a crucial issue for quantum information and quantum sensing. In solid-state systems, suppressing noise through various techniques has been demonstrated. On the other hand, an electrical control for suppression is important toward individual controls of on-chip quantum-information devices. Here, we show electrical control for extension of the spin coherence times of 40-nm-deep ion-implanted single-nitrogen-vacancy center spins in diamond by suppressing magnetic noise. We apply 120 V dc across two contacts spaced by 10 μm. The spin coherence times, estimated from a free-induction decay and a Hahn-echo decay, are increased up to about 10 times (reaching 10 μs) and 1.4 times (reaching 150 μs), respectively. From the quantitative analysis, the dominant decoherence source, depending on the applied static electric field, is elucidated. Electrical control for extension can deliver a sensitivity enhancement to the dc sensing of temperature, pressure, and electric (but not magnetic) fields, opening up an alternative technique in solid-state quantum-information devices. |
著作権等: | © 2020 American Physical Society |
URI: | http://hdl.handle.net/2433/279917 |
DOI(出版社版): | 10.1103/physrevapplied.14.044033 |
出現コレクション: | 学術雑誌掲載論文等 |
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