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  1. 学会発表・講演等
  2. ポスター発表

Implementation of digital filtering detection method for portable highly sensitive quantum diamond magnetometer

https://repo.qst.go.jp/records/76040
https://repo.qst.go.jp/records/76040
656d221d-d31e-4973-81f4-ce04203b99dd
Item type 会議発表用資料 / Presentation(1)
公開日 2019-06-14
タイトル
タイトル Implementation of digital filtering detection method for portable highly sensitive quantum diamond magnetometer
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_c94f
資源タイプ conference object
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 Masuyama, Yuta

× Masuyama, Yuta

WEKO 763685

Masuyama, Yuta

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Iwasaki, Takayuki

× Iwasaki, Takayuki

WEKO 763686

Iwasaki, Takayuki

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Hatano, Mutsuko

× Hatano, Mutsuko

WEKO 763687

Hatano, Mutsuko

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Ohshima, Takeshi

× Ohshima, Takeshi

WEKO 763688

Ohshima, Takeshi

Search repository
Masuyama, Yuta

× Masuyama, Yuta

WEKO 763689

en Masuyama, Yuta

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Hatano, Mutsuko

× Hatano, Mutsuko

WEKO 763690

en Hatano, Mutsuko

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Ohshima, Takeshi

× Ohshima, Takeshi

WEKO 763691

en Ohshima, Takeshi

Search repository
抄録
内容記述タイプ Abstract
内容記述 One of the promising solid-state quantum sensors is nitrogen-vacancy (NV) centers in diamond which can maintain quantum state at room temperature and under atmospheric pressure condition. Further improvement of sensitivity of the sensor is needed to detect the magnetic field from the brain. Noise reduction and simplified system are key techniques especially for the practical use of highly sensitive DC magnetic sensor. In this study, we devised a digital filtering detection method without synchronization between detector and modulator which is a similar noise reduction effect as a lock-in detection technique. We implemented the detection method for the quantum diamond sensor system with the large sensor volume [1].
The Lock-in detection technique is a typical high sensitivity technique for DC magnetic measurement. There are several different implementations of lock-in detection technique for the quantum diamond sensor including microwave modulation, magnetic field modulation, and laser modulation. However, it is a challenging task to obtain high magnetic sensitivity with a compact sensor module because these lock-in detection techniques require a lock-in amplifier or synchronization system. We devised a digital filtering detection method which is an alternative method to the lock-in detection technique. Fluorescence from the NV center is modulated by frequency modulated microwave during optical detected magnetic resonance (ODMR) measurement. The fluorescence is analyzed by digital signal processing which achieves a similar noise reduction effect as a lock-in detection technique. Our method relies on a fact that ODMR converts frequency modulation to amplitude modulation. Thus, our method is applicable not only to the NV center system but also another color center system.
This work was supported by MEXT Q-LEAP, CAO PRISM, Japan.

[1] Y. Masuyama et al., Rev. Sci. Instrum. 89, 125007 (2018).
会議概要(会議名, 開催地, 会期, 主催者等)
内容記述タイプ Other
内容記述 Gordon Research Conference "Quantum Sensing Applications in Metrology and Imaging"
発表年月日
日付 2019-06-04
日付タイプ Issued
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