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Demonstration of quantum synchronization based on second-order quantum coherence of entangled photons
文献类型：期刊论文
| 作者 | Quan, Runai1,2; Zhai, Yiwei1,2; Wang, Mengmeng1,2; Hou, Feiyan1,2; Wang, Shaofeng1,2; Xiang, Xiao1,2; Liu, Tao1; Zhang, Shougang1; Dong, Ruifang1 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2016-07-25 |
| 卷号 | 6页码:8 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/srep30453 |
| 英文摘要 | 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. |
| WOS关键词 | CLOCK SYNCHRONIZATION ; TIME TRANSFER ; FREQUENCY TRANSFER ; ATOMIC CLOCKS ; FIBER LINK ; ACCURACY ; DISTANCE ; RELATIVITY ; RESOLUTION ; STANDARDS |
| 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 |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000380191900001 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | 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 |
| 源URL | [http://210.72.145.45/handle/361003/11224]  |
| 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. |
入库方式： OAI收割
来源：国家授时中心
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