Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method

doi:10.3390/app11031206

NTSC-IR

	Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method
	Zhou, Chihua 1,2; Lu, Xiaotong 1,2; Lu, Benquan 1; Wang, Yebing 1; Chang, Hong1,2
	2021-02-01
发表期刊	APPLIED SCIENCES-BASEL
卷号	11 期号:3 页码:8
摘要	The self-comparison method is a powerful tool in the uncertainty evaluation of optical lattice clocks, but any drifts will cause a frequency offset between the two compared clock loops and thus lead to incorrect measurement result. We propose a drift-insensitive self-comparison method to remove this frequency offset by adjusting the clock detection sequence. We also experimentally demonstrate the validity of this method in a one-dimensional Sr-87 optical lattice clock. As the clock laser frequency drift exists, the measured frequency difference between two identical clock loops is (240 +/- 34) mHz using the traditional self-comparison method, while it is (-15 +/- 16) mHz using the drift-insensitive self-comparison method, indicating that this frequency offset is cancelled within current measurement precision. We further use the drift-insensitive self-comparison technique to measure the collisional shift and the second-order Zeeman shift of our clock and the results show that the fractional collisional shift and the second-order Zeeman shift are 4.54(28) x 10(-16) and 5.06(3) x 10(-17), respectively.
关键词	optical lattice clocks strontium atoms optical lattices laser cooling and trapping
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
DOI	10.3390/app11031206
语种	英语
资助项目	National Natural Science Foundation of China[61775220] ; National Key R&D Program of China[2016YFF0200201] ; Key Research Project of Frontier Science of the Chinese Academy of Sciences[QYZDB-SSW-JSC004] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB21030100]
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Key Research Project of Frontier Science of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000614956500001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/12133
专题	中国科学院国家授时中心
通讯作者	Chang, Hong
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Chihua,Lu, Xiaotong,Lu, Benquan,et al. Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method[J]. APPLIED SCIENCES-BASEL,2021,11(3):8.
APA	Zhou, Chihua,Lu, Xiaotong,Lu, Benquan,Wang, Yebing,&Chang, Hong.(2021).Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method.APPLIED SCIENCES-BASEL,11(3),8.
MLA	Zhou, Chihua,et al."Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method".APPLIED SCIENCES-BASEL 11.3(2021):8.