US 12,088,312 B2
Implementation method and device of atomic clock based on diamond NV-14N coupling spin system
Tianyu Xie, Anhui (CN); Shaoyi Xu, Anhui (CN); Zhiyuan Zhao, Anhui (CN); Fazhan Shi, Anhui (CN); and Jiangfeng Du, Anhui (CN)
Assigned to University of Science and Technology of China, Anhui (CN)
Appl. No. 18/029,448
Filed by UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA, Anhui (CN)
PCT Filed Jun. 7, 2021, PCT No. PCT/CN2021/098720
§ 371(c)(1), (2) Date Mar. 30, 2023,
PCT Pub. No. WO2022/256990, PCT Pub. Date Dec. 15, 2022.
Prior Publication US 2023/0370075 A1, Nov. 16, 2023
Int. Cl. H03L 7/26 (2006.01); G04F 5/14 (2006.01)
CPC H03L 7/26 (2013.01) [G04F 5/14 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for implementing an atomic clock based on NV-14N coupling spin system in diamond, the method comprising: comparing a RF frequency with a 14N zero-field splitting through Ramsey interferometry; reading out a difference value between the RF frequency and the 14N zero-field splitting by collecting a fluorescence signal at NV centers so as to feedback and lock the RF frequency, and outputting the RF frequency as a frequency standard.