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Chin. Opt. Lett.
 Home  List of Issues    Issue 07 , Vol. 16 , 2018    10.3788/COL201816.070201

Reaching a few 10?15 long-term stability of integrating sphere cold atom clock
Yaning Wang1;2, Yanling Meng1, Jinyin Wan1, Ling Xiao1, Mingyuan Yu1;2, Xin Wang1;2, Xinchuan Ouyang1;2, Huadong Cheng1, and Liang Liu1
1 Key Laboratory of Quantum Optics, The Center of Cold Atom Physics, [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences], Shanghai 201 800, China
2 [University of Chinese Academy of Sciences], Beijing 100049, China

Chin. Opt. Lett., 2018, 16(07): pp.070201

Topic:Atomic and molecular physics
Keywords(OCIS Code): 020.1335  020.3320  020.7490  120.3940  

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.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2018/6/29

Get Citation: Yaning Wang, Yanling Meng, Jinyin Wan, Ling Xiao, Mingyuan Yu, Xin Wang, Xinchuan Ouyang, Huadong Cheng, and Liang Liu, "Reaching a few 10?15 long-term stability of integrating sphere cold atom clock," Chin. Opt. Lett. 16(07), 070201(2018)

Note: 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).


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