The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2025
Filed:
Jun. 07, 2021
University of Science and Technology of China, Anhui, CN;
Shaoyi Xu, Anhui, CN;
Tianyu Xie, Anhui, CN;
Zhiyuan Zhao, Anhui, CN;
Fazhan Shi, Anhui, CN;
Jiangfeng Du, Anhui, CN;
University of Science and Technology of China, Anhui, CN;
Abstract
A method for implementing an atomic clock based on NV-N coupling spin system in diamond and a device are provided. The method includes: applying a pulse sequence to jointly initialize NV electron spins andN nuclear spins; performing a Ramsey interferometry to compare a RF frequency and aN hyperfine coupling; 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 theN hyperfine coupling according to the fluorescence signal, thereby locking the RF frequency to theN hyperfine coupling; and outputting the RF frequency as a frequency standard.