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Reaching a few 10-15 long-term stability of integrating sphere cold atom clock

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Abstract

We present the long-term stability of the integrating sphere cold atom clock (ISCAC) and analyze its systematic limitations. The relative frequency instability of 2.6×10-15 is reached for an averaging time of 2×105 s. The second-order Zeeman effect and the cavity pulling effect in ISCAC, which would induce the frequency drift from the clock transition, are analyzed. The analytical and experimental results indicate that the cavity pulling effect is the main contribution to the long-term frequency instability of the ISCAC. Further technical improvements to the microwave cavity are also discussed.

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DOI:10.3788/col201816.070201

所属栏目:Atomic and molecular physics

基金项目:The authors thank Professor Yuanci Gao for his calculations of the microwave cavity parameters. This work was supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciences and the National Natural Science Foundation of China (Nos. 61727821 and 11604353).

收稿日期:2018-05-15

录用日期:2018-05-21

网络出版日期:2018-06-29

作者单位    点击查看

Yaning Wang:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, China
Yanling Meng:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Jinyin Wan:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Ling Xiao:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Mingyuan Yu:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, China
Xin Wang:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, China
Xinchuan Ouyang:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, China
Huadong Cheng:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Liang Liu:Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

联系人作者:Liang Liu(liang.liu@siom.ac.cn)

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引用该论文

Yaning Wang, Yanling Meng, Jinyin Wan, Ling Xiao, Mingyuan Yu, Xin Wang, Xinchuan Ouyang, Huadong Cheng, Liang Liu, "Reaching a few 10-15 long-term stability of integrating sphere cold atom clock," Chinese Optics Letters 16(7), 070201 (2018)

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