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arXiv · 2211.04096

Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time

Xiaotong Lu·Feng Guo·Yebing Wang·Qinfang Xu·Chihua Zhou·Jingjing Xia·Wenjun Wu·Hong Chang
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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.

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Xiaotong Lu, Feng Guo, Yebing Wang, Qinfang Xu, Chihua Zhou, Jingjing Xia, Wenjun Wu, Hong Chang. 2022-11-08. Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time. https://doi.org/10.1088/1681-7575%2Facb05c

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