Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock

doi:10.1063/5.0025097

NTSC-IR

	Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock
	Lu, Xiaotong 1,2; Zhou, Chihua 1,2; Li, Ting 1,2; Wang, Yebing 1; Chang, Hong1,2
	2020-12-07
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	117 期号:23 页码:5
摘要	We present a synchronous frequency comparison method based on one cold-atom ensemble by using the dual-excitation spectrum technique, which can simultaneously detect the probabilities of two different clock transitions. We experimentally verify this synchronous frequency comparison method between \| m F \| = 9 / 2 and \| m F \| = 7 / 2 in a one-dimensional Sr-87 optical lattice clock and the comparison instability is well below the Dick limit. We also extend the dual-excitation spectrum method to shorten the clock feedback cycle by a half in optical lattice clocks and experimentally demonstrate that the interleaved self-comparison instability is 1.4 times lower than that of the traditional operation method.
资助者	National Natural Science Foundation of China ; National Natural Science Foundation 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 ; 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 ; 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 ; 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	10.1063/5.0025097
语种	英语
资助项目	National Natural Science Foundation of China[61775220] ; 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 ; 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 ; 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 ; 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 ; 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	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000598498200001
出版者	AMER INST PHYSICS
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/12101
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, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xiaotong,Zhou, Chihua,Li, Ting,et al. Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock[J]. APPLIED PHYSICS LETTERS,2020,117(23):5.
APA	Lu, Xiaotong,Zhou, Chihua,Li, Ting,Wang, Yebing,&Chang, Hong.(2020).Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock.APPLIED PHYSICS LETTERS,117(23),5.
MLA	Lu, Xiaotong,et al."Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock".APPLIED PHYSICS LETTERS 117.23(2020):5.