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Decreasing the uncertainty of atomic clocks via real-time noise distinguish
Dong, Richang; Lin, Jinda; Wei, Rong; Wang, Wenli; Zou, Fan; Du, Yuanbo; Chen, Tingting; Wang, Yuzhu; weirong@siom.ac.cn
2017
发表期刊Chin. Opt. Lett.
卷号15期号:5
摘要The environmental perturbation on atoms is a key factor restricting the performance of atomic frequency standards, especially in the long-term scale. In this Letter, we perform a real-time noise distinguish (RTND) to an atomic clock to decrease the uncertainty of the atomic clock beyond the level that is attained by the current controlling method. In RTND, the related parameters of the clock are monitored in real time by using the calibrated sensors, and their effects on the clock frequency are calculated. By subtracting the effects from the error signal, the local oscillator is treated as equivalently locked to the unperturbed atomic levels. In order to perform quantitative tests, we engineer time-varying noise much larger than the intrinsic noise in our fountain atomic clock. By using RTND, the influences of the added noises are detected and subtracted precisely from the error signals before feeding back to the reference oscillator. The result shows that the statistical uncertainty of our fountain clock is improved by an order of magnitude to 2 x 10(-15). Besides, the frequency offset introduced by the noise is also corrected, while the systematic uncertainty is unaffected.
文章类型Article
部门归属量光
DOI10.3788/COL201715.050201
资助者National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105]
收录类别SCI
资助者National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105] ; National Natural Science Foundation of China [61275204, 91336105]
WOS记录号WOS:000401075400001
引用统计
文献类型期刊论文
条目标识符http://ir.siom.ac.cn/handle/181231/27772
专题量子光学重点实验室
通讯作者weirong@siom.ac.cn
作者单位中国科学院上海光学精密机械研究所
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GB/T 7714
Dong, Richang,Lin, Jinda,Wei, Rong,et al. Decreasing the uncertainty of atomic clocks via real-time noise distinguish[J]. Chin. Opt. Lett.,2017,15(5).
APA Dong, Richang.,Lin, Jinda.,Wei, Rong.,Wang, Wenli.,Zou, Fan.,...&weirong@siom.ac.cn.(2017).Decreasing the uncertainty of atomic clocks via real-time noise distinguish.Chin. Opt. Lett.,15(5).
MLA Dong, Richang,et al."Decreasing the uncertainty of atomic clocks via real-time noise distinguish".Chin. Opt. Lett. 15.5(2017).
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