High-precision nonlocal temporal correlation identification of entangled photon pairs for quantum clock synchronization

doi:10.1063/5.0031166

NTSC-IR

	High-precision nonlocal temporal correlation identification of entangled photon pairs for quantum clock synchronization
	Quan, Runai 1,2; Dong, Ruifang 1,2; Xiang, Xiao 1,2; Li, Baihong 1,2,3; Liu, Tao 1,2; Zhang, Shougang 1,2
	2020-12-01
发表期刊	REVIEW OF SCIENTIFIC INSTRUMENTS
ISSN	0034-6748
卷号	91 期号:12 页码:6
摘要	High-precision nonlocal temporal correlation identification in entangled photon pairs is critical to measure the time offset between remote independent time scales for many quantum information applications. The first nonlocal correlation identification was reported in 2009, which extracts the time offset via the algorithm of iterative fast Fourier transformations and their inverse. The best identification resolution is restricted by the peak identification threshold of the algorithm, and thus the time offset calculation precision is limited. In this paper, an improvement for the identification is presented both in resolution and precision via a modified algorithm of direct cross correlation extraction. A flexible resolution down to 1 ps is realized, which is only dependent on the least significant bit resolution of the time-tagging device. The attainable precision is shown to be mainly determined by the inherent timing jitter of single photon detectors, the acquired pair rate, and acquisition time, and a sub-picosecond precision (0.72 ps) has been achieved at an acquisition time of 4.5 s. This high-precision nonlocal measurement realization provides a solid foundation for the field applications of entanglement-based quantum clock synchronization, ranging, and communications.
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project
DOI	10.1063/5.0031166
语种	英语
资助项目	National Natural Science Foundation of China[12033007] ; National Natural Science Foundation of China[61801458] ; National Natural Science Foundation of China[61875205] ; National Natural Science Foundation of China[91836301] ; National Natural Science Foundation of China[12074309] ; "Western Young Scholar" Project of CAS[XAB2019B17] ; "Western Young Scholar" Project of CAS[XAB2019B15] ; Key R&D Program of Guangdong province[2018B030325001] ; Frontier Science Key Research Project of CAS[QYZDB-SSW-SLH007] ; Strategic Priority Research Program of CAS[XDC07020200] ; Chinese Academy of Sciences Key Project[ZDRW-KT-2019-1-0103]
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Western Young Scholar" Project of CAS ; "Western Young Scholar" Project of CAS ; Key R&D Program of Guangdong province ; Key R&D Program of Guangdong province ; Frontier Science Key Research Project of CAS ; Frontier Science Key Research Project of CAS ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project
WOS研究方向	Instruments & Instrumentation ; Physics
WOS类目	Instruments & Instrumentation ; Physics, Applied
WOS记录号	WOS:000600123600001
出版者	AMER INST PHYSICS
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/12107
专题	中国科学院国家授时中心
通讯作者	Dong, Ruifang
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 3.Xian Univ Sci & Technol, Coll Sci, Xian 710054, Peoples R China
推荐引用方式 GB/T 7714	Quan, Runai,Dong, Ruifang,Xiang, Xiao,et al. High-precision nonlocal temporal correlation identification of entangled photon pairs for quantum clock synchronization[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2020,91(12):6.
APA	Quan, Runai,Dong, Ruifang,Xiang, Xiao,Li, Baihong,Liu, Tao,&Zhang, Shougang.(2020).High-precision nonlocal temporal correlation identification of entangled photon pairs for quantum clock synchronization.REVIEW OF SCIENTIFIC INSTRUMENTS,91(12),6.
MLA	Quan, Runai,et al."High-precision nonlocal temporal correlation identification of entangled photon pairs for quantum clock synchronization".REVIEW OF SCIENTIFIC INSTRUMENTS 91.12(2020):6.