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PhysRevApplied.19.034061.pdf2.02 MBAdobe PDF見る/開く
タイトル: Spin-Dependent Dynamics of Photocarrier Generation in Electrically Detected Nitrogen-Vacancy-Based Quantum Sensing
著者: Morishita, Hiroki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-3779-6124 (unconfirmed)
Morioka, Naoya  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-8007-2087 (unconfirmed)
Nishikawa, Testuri
Yao, Hajime
Onoda, Shinobu
Abe, Hiroshi
Ohshima, Takeshi
Mizuochi, Norikazu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-3099-3210 (unconfirmed)
著者名の別形: 森下, 弘樹
森岡, 直也
西川, 哲理
八尾, 肇
水落, 憲和
キーワード: Carrier generation & recombination
NV centers
Photocurrent
Quantum sensing
Spin optoelectronics
Nitrogen vacancy centers in diamond
Electron spin resonance
Condensed Matter, Materials & Applied Physics
Quantum Information
Atomic, Molecular & Optical
発行日: Mar-2023
出版者: American Physical Society (APS)
誌名: Physical Review Applied
巻: 19
号: 3
論文番号: 034061
抄録: Electrical detection of nitrogen-vacancy (N-V) centers in diamond is advantageous for developing and integrating quantum information processing devices and quantum sensors and has the potential to achieve a higher collection efficiency than that of optical techniques. However, the mechanism for the electrical detection of N-V spins is not fully understood. In this study, we observe positive contrast in photocurrent detected magnetic resonance (PDMR). Note that negative PDMR contrast is usually observed. To discuss the sign of the PDMR contrast, we numerically analyze the dynamics of photocarrier generation by N-V centers using a seven-level rate model. It is found that the sign of the PDMR contrast depends on the difference in the photocurrent generated from the excited states and the metastable state of N-V centers. Furthermore, we demonstrate ac magnetic field sensing using spin coherence with the PDMR technique. ac magnetic field measurement with the PDMR technique is still challenging because the noise from a fluctuating magnetic environment is greater than the measured signal. Here, we introduce noise suppression using a phase-cycling-based noise-canceling technique. We demonstrate electrically detected ac magnetic field sensing with a sensitivity of 29 nT Hz[−1/2]. Finally, we discuss sensitivity enhancement based on the proposed model.
著作権等: © 2023 American Physical Society
URI: http://hdl.handle.net/2433/282725
DOI(出版社版): 10.1103/PhysRevApplied.19.034061
出現コレクション:学術雑誌掲載論文等

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