Study of optical clocks based on ultracold 171Yb atoms

doi:10.1088/1674-1056/aba099

中国物理B ›› 2020, Vol. 29 ›› Issue (9): 90601-090601.doi: 10.1088/1674-1056/aba099

所属专题： SPECIAL TOPIC — Ultracold atom and its application in precision measurement

Study of optical clocks based on ultracold ¹⁷¹Yb atoms

1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
2 Shanghai Research Center for Quantum Sciences, Shanghai 201315, China

收稿日期:2020-05-09 修回日期:2020-06-08 接受日期:2020-06-29 出版日期:2020-09-05 发布日期:2020-09-05
通讯作者: Xin-Ye Xu E-mail:xyxu@phy.ecnu.edu.cn
基金资助:
Project supported by the National Key Basic Research and Development Program of China (Grant Nos. 2016YFA0302103, 2017YFF0212003, and 2016YFB0501601), the Municipal Science and Technology Major Project of Shanghai, China (Grant No. 2019SHDZX01), the National Natural Science Foundation of China (Grant No. 11134003), and the Excellent Academic Leaders Program of Shanghai, China (Grant No. 12XD1402400).

Study of optical clocks based on ultracold ¹⁷¹Yb atoms

Di Ai(艾迪)¹, Hao Qiao(谯皓)¹, Shuang Zhang(张爽)¹, Li-Meng Luo(骆莉梦)¹, Chang-Yue Sun(孙常越)¹, Sheng Zhang(张胜)¹, Cheng-Quan Peng(彭成权)¹, Qi-Chao Qi(齐启超)¹, Tao-Yun Jin(金涛韫)¹, Min Zhou(周敏)¹, Xin-Ye Xu(徐信业)^1,2

1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
2 Shanghai Research Center for Quantum Sciences, Shanghai 201315, China

Received:2020-05-09 Revised:2020-06-08 Accepted:2020-06-29 Online:2020-09-05 Published:2020-09-05
Contact: Xin-Ye Xu E-mail:xyxu@phy.ecnu.edu.cn
Supported by:
Project supported by the National Key Basic Research and Development Program of China (Grant Nos. 2016YFA0302103, 2017YFF0212003, and 2016YFB0501601), the Municipal Science and Technology Major Project of Shanghai, China (Grant No. 2019SHDZX01), the National Natural Science Foundation of China (Grant No. 11134003), and the Excellent Academic Leaders Program of Shanghai, China (Grant No. 12XD1402400).

摘要/Abstract

摘要： 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.

关键词: cold ytterbium atoms, optical clocks, ultra-stable clock lasers, clock-transition spectra, instability and uncertainty

Abstract: 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.

Key words: cold ytterbium atoms, optical clocks, ultra-stable clock lasers, clock-transition spectra, instability and uncertainty

中图分类号: (Time and frequency)

06.30.Ft

32.30.-r (Atomic spectra?) 32.70.Jz (Line shapes, widths, and shifts) 37.10.Jk (Atoms in optical lattices)

艾迪, 谯皓, 张爽, 骆莉梦, 孙常越, 张胜, 彭成权, 齐启超, 金涛韫, 周敏, 徐信业. Study of optical clocks based on ultracold ¹⁷¹Yb atoms[J]. 中国物理B, 2020, 29(9): 90601-090601.

Di Ai(艾迪), Hao Qiao(谯皓), Shuang Zhang(张爽), Li-Meng Luo(骆莉梦), Chang-Yue Sun(孙常越), Sheng Zhang(张胜), Cheng-Quan Peng(彭成权), Qi-Chao Qi(齐启超), Tao-Yun Jin(金涛韫), Min Zhou(周敏), Xin-Ye Xu(徐信业). Study of optical clocks based on ultracold ¹⁷¹Yb atoms[J]. Chin. Phys. B, 2020, 29(9): 90601-090601.

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Study of optical clocks based on ultracold ¹⁷¹Yb atoms

Study of optical clocks based on ultracold ¹⁷¹Yb atoms

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