| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-08-14 |
| タイトル |
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タイトル |
Extension of spin dephasing time of continuously excited ensemble NV centres by double-quantum Ramsey magnetometry with spin bath driving |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Ikuya Fujisaki
Yuta Araki
Yuji Hatano
Takeharu Sekiguchi
Hiromitsu Kato
Onoda Shinobu
Ohshima Takeshi
Takayuki Shibata
Takayuki Iwasaki
Hatano Mutsuko
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Quantum magnetic sensors based on nitrogen vacancy (NV) centers are expected to be used for various biological and medical applications. Continuously excited (CE) Ramsey magnetometry is one of the most sensitive measurement protocols and has the potential to improve the sensitivity of sensors using additional quantum manipulations to extend the spin dephasing time. In a typical ensemble NV measurement, the spin dephasing time is limited by inhomogeneous coupling. To overcome this limitation, a magnetometry that extends the CE Ramsey protocol with a double-quantum (DQ) Ramsey sequence and spin bath driving is developed. It is demonstrated that the electric noise due to the spatial inhomogeneity of the crystal strain is cancelled out by the DQ Ramsey, and the magnetic noise due to the P1 centers was suppressed by spin bath driving. Compared to the conventional CE Ramsey, the CE-DQ Ramsey with spin bath driving effectively doubles the gyromagnetic ratio and yields a twofold extension of T2 , corresponding to a fourfold enhancement of the photon-shot-noise limited sensitivity. |
| 書誌情報 |
Physica Status Solidi A: Applications and Materials Science
巻 221,
号 8,
p. 2300333,
発行日 2023-07
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| 出版者 |
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出版者 |
WILEY |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1862-6300 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1002/pssa.202300333 |
