N coupling spin system

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United States of America Patent

PATENT NO 12088312
APP PUB NO 20230370075A1
SERIAL NO

18029448

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Abstract

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A method for implementing an atomic clock based on NV-14N coupling spin system in diamond and a device are provided. The method is to lock a RF frequency using a 14N zero-field splitting and output the RF frequency as a frequency standard. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 14N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 14N zero-field splitting; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 14N zero-field splitting according to the fluorescence signal, thereby locking the RF frequency to the 14N zero-field splitting; and outputting the RF frequency as a frequency standard.

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Patent Owner(s)

Patent OwnerAddress
UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA230026 JINZHAI ROAD BAOHE DISTRICT HEFEI ANHUI PROVINCE NO 96 HEFEI CITY ANHUI PROVINCE 230026

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Du, Jiangfeng Anhui, CN 12 5
Shi, Fazhan Anhui, CN 4 1
Xie, Tianyu Anhui, CN 33 703
Xu, Shaoyi Anhui, CN 14 312
Zhao, Zhiyuan Anhui, CN 15 102

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