Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time
Atomic Physics
2023-02-01 v1 Optics
Abstract
We report the absolute frequency measurement of the 5s2 1S0-5s5p 3P0 transition in 87Sr optical lattice clock (Sr1) at National Time Service Center (NTSC). Its systematic frequency shifts are evaluated carefully with a total relative uncertainty of 5.1E10-17. The measured absolute frequency is 429 228 004 229 872.91(18) Hz with a relative uncertainty of 4.13E10-16, with reference to the ensemble of primary and secondary frequency standards published in the Circular T bulletin by BIPM through a global navigation satellite system (GNSS) link.
Keywords
Cite
@article{arxiv.2211.04096,
title = {Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time},
author = {Xiaotong Lu and Feng Guo and Yebing Wang and Qinfang Xu and Chihua Zhou and Jingjing Xia and Wenjun Wu and Hong Chang},
journal= {arXiv preprint arXiv:2211.04096},
year = {2023}
}