Research on Micro-Displacement Measurement Accuracy Enhancement Method Based on Ensemble NV Color Center

Author:

Liu Yuqi123,Li Zhonghao123ORCID,Zhang Hao123,Guo Hao123,Shi Ziyang123,Ma Zongmin123

Affiliation:

1. Key Laboratory of Instrument Science and Dynamic Testing Ministry of Education, North University of China, Taiyuan 030051, China

2. Key Lab of Quantum Sensing and Precision Measurement, Taiyuan 030051, China

3. Institute of Instrument and Electronics, North University of China, Taiyuan 030051, China

Abstract

This paper builds a corresponding micro-displacement test system based on an ensemble nitrogen-vacancy (NV) color center magnetometer by combining the correlation between a magnetic flux concentrator, a permanent magnet, and micro-displacement. By comparing the measurement results obtained with and without the magnetic flux concentrator, it can be seen that the resolution of the system under the magnetic flux concentrator can reach 25 nm, which is 24 times higher than without the magnetic flux concentrator. The effectiveness of the method is proven. The above results provide a practical reference for high-precision micro-displacement detection based on the diamond ensemble.

Funder

Special Fund for Research on National Major Research Instruments and Facilities of the National Natural Science Foundation of China

National Natural Science Foundation of China

Key Laboratory of Shanxi Province, China

Fund for Shanxi “1331 Project” Key Subjects Construction, China

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering

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