High precision microwave measurement based on nitrogen-vacancy color center and application in velocity detection

Author:

Zhang Hao12,Li Zhonghao1ORCID,Yang Chenyu1,Ma Zongmin12,Guo Hao1,Wen Huanfei1,Li Xin1,Tang Jun12,Liu Jun1

Affiliation:

1. Key Lab of Quantum Sensing and Precision Measurement

2. North University of China

Abstract

Wide-range high-precision velocity detection with nitrogen-vacancy (NV) color center has been realized. By treating the NV color center as a mixer, the high-precision microwave measurement is realized. Through optimization of acquisition time, the microwave frequency resolution is improved to the mHz level. Combined with the frequency-velocity conversion model, velocity detection is realized in the range of 0-100 cm/s, and the velocity resolution is up to 0.012 cm/s. The maximum deviation in repeated measurements does not exceed 1/1000. Finally, combined with the multiplexed microwave reference technique, the range of velocity can be extended to 7.4 × 105 m/s. All of the results provide reference for high-precision velocity detection and play a significant role in various domains of quantum precision measurement. This study provides a crucial technical foundation for the development of high-dynamic-range velocity detectors and novel quantum precision velocity measurement technologies.

Funder

Joint Funds of the National Natural Science Foundation of China

National Natural Science Foundation of China

Key Laboratory of Shanxi Province, China

Publisher

Optica Publishing Group

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