量子自旋调控的微位移检测系统设计与测量

doi:10.3969/j.issn.1000-1158.2024.04.01

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Abstract In order to realize high-precision micro-displacement detection, the nitrogen-vacancy (NV) color center magnetometer is taken as the basis, and testing is conducted using the quantum spin regulation principle and uniform variation of spatial gradient magnetic field. Firstly, the gradient magnetic field is constructed with uniform variation by the permanent magnet, and the correlation between the magnetic field gradient and displacement is obtained. Secondly, the Ramsay sequence parameters required in the experiment is determined by testing the NV color center optical detection magnetic resonance (ODMR) frequency points and determining the quantum flip period corresponding to the Rabi oscillation in the time domain. Finally, the correlation of fluorescence intensity and magnetic field gradient is completed based on the Ramsey magnetic field measurement principle. The relationship between fluorescence intensity and micro-displacement change is obtained, and the micro-displacement measurement is realized. The minimum resolution of displacement is about 104nm.

Key words： geometric measurement micro-displacement solid state quantum spin nitrogen-vacancy color center magnetometer;Ramsey

Received: 06 April 2023 Published: 03 April 2024

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TB92

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	Articles by authors
	LI Zhonghao
	LIU Yuqi
	ZHANG Hao
	LIU Xin
	ZHANG Jiaxuan

Cite this article:

LI Zhonghao,LIU Yuqi,ZHANG Hao, et al. Design and Measurement of Micro-displacement Detection System Based on Solid State Quantum Spin Regulation[J]. Acta Metrologica Sinica, 2024, 45(4): 465-470.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.04.01 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I4/465

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