Chinese Physics B, Volume. 29, Issue 9, (2020)
Study of optical clocks based on ultracold 171Yb atoms
The optical atomic clocks have the potential to transform global timekeeping, relying on the state-of-the-art accuracy and stability, and greatly improve the measurement precision for a wide range of scientific and technological applications. Herein we report on the development of the optical clock based on 171Yb atoms confined in an optical lattice. A minimum width of 1.92-Hz Rabi spectra has been obtained with a new 578-nm clock interrogation laser. The in-loop fractional instability of the 171Yb clock reaches 9.1 × 10-18 after an averaging over a time of 2.0 × 104 s. By synchronous comparison between two clocks, we demonstrate that our 171Yb optical lattice clock achieves a fractional instability of 4.60×10-16/τ.
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Di Ai, Hao Qiao, Shuang Zhang, Li-Meng Luo, Chang-Yue Sun, Sheng Zhang, Cheng-Quan Peng, Qi-Chao Qi, Tao-Yun Jin, Min Zhou, Xin-Ye Xu. Study of optical clocks based on ultracold 171Yb atoms[J]. Chinese Physics B, 2020, 29(9):
Category: Ultracold atom and its application in precision measurement
Received: May. 9, 2020
Accepted: --
Published Online: Apr. 29, 2021
The Author Email: Xu Xin-Ye (xyxu@phy.ecnu.edu.cn)