Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons

doi:10.1038/srep30453

NTSC-IR

	Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons
	Quan, Runai 1,2; Zhai, Yiwei 1,2; Wang, Mengmeng 1,2; Hou, Feiyan 1,2; Wang, Shaofeng 1,2; Xiang, Xiao 1,2; Liu, Tao 1; Zhang, Shougang 1; Dong, Ruifang 1
	2016-07-25
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6 页码:8
摘要	Based on the second-order quantum interference between frequency entangled photons that are generated by parametric down conversion, a quantum strategic algorithm for synchronizing two spatially separated clocks has been recently presented. In the reference frame of a Hong-Ou-Mandel (HOM) interferometer, photon correlations are used to define simultaneous events. Once the HOM interferometer is balanced by use of an adjustable optical delay in one arm, arrival times of simultaneously generated photons are recorded by each clock. The clock offset is determined by correlation measurement of the recorded arrival times. Utilizing this algorithm, we demonstrate a proof-of-principle experiment for synchronizing two clocks separated by 4 km fiber link. A minimum timing stability of 0.44 ps at averaging time of 16000 s is achieved with an absolute time accuracy of 73.2 ps. The timing stability is verified to be limited by the correlation measurement device and ideally can be better than 10 fs. Such results shine a light to the application of quantum clock synchronization in the real high-accuracy timing system.
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China
DOI	10.1038/srep30453
关键词[WOS]	CLOCK SYNCHRONIZATION ; TIME TRANSFER ; FREQUENCY TRANSFER ; ATOMIC CLOCKS ; FIBER LINK ; ACCURACY ; DISTANCE ; RELATIVITY ; RESOLUTION ; STANDARDS
语种	英语
资助项目	National Natural Science Foundation of China[11174282] ; National Natural Science Foundation of China[91336108] ; National Natural Science Foundation of China[61127901] ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Equipment Development Project of the CAS, China ; Research Equipment Development Project of the CAS, China ; "Youth Talent Support Plan" of the Organization Department, China ; "Youth Talent Support Plan" of the Organization Department, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; Key Fund for the "Western light" Talent Cultivation Plan of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China ; "Cross and Cooperative" Science and Technology Innovation Team Project of the CAS, China
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000380191900001
出版者	NATURE PUBLISHING GROUP
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/11225
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, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Quan, Runai,Zhai, Yiwei,Wang, Mengmeng,et al. Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons[J]. SCIENTIFIC REPORTS,2016,6:8.
APA	Quan, Runai.,Zhai, Yiwei.,Wang, Mengmeng.,Hou, Feiyan.,Wang, Shaofeng.,...&Dong, Ruifang.(2016).Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons.SCIENTIFIC REPORTS,6,8.
MLA	Quan, Runai,et al."Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons".SCIENTIFIC REPORTS 6(2016):8.