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Implementation of field two-way quantum synchronization of distant clocks across a 7 km deployed fiber link
文献类型：期刊论文
| 作者 | Quan, Runai1,2; Hong, Huibo1,2; Xue, Wenxiang2; Quan, Honglei1,2; Zhao, Wenyu2; Xiang, Xiao1,2; Liu, Yuting1,2; Cao, Mingtao2; Liu, Tao1,2; Zhang, Shougang1,2 |
| 刊名 | OPTICS EXPRESS
 |
| 出版日期 | 2022-03-28 |
| 卷号 | 30期号:7页码:10269-10279 |
| ISSN号 | 1094-4087 |
| DOI | 10.1364/OE.451172 |
| 英文摘要 | The two-way quantum clock synchronization has been shown to provide femtosecond-level synchronization capability and security against symmetric delay attacks, thus becoming a prospective method to compare and synchronize distant clocks with enhanced precision and safety. In this letter, a field test of two-way quantum synchronization between a H-maser and a Rb clock linked by a 7 km-long deployed fiber is implemented by using time-energy entangled photon-pair sources. Limited by the intrinsic frequency stability of the Rb clock, the achieved time stability at 30 s is measured as 32 ps. By applying a fiber-optic microwave frequency transfer technology to build frequency syntonization between the separated clocks, the limit set by the intrinsic frequency stability of the Rb clock is overcome. A significantly improved time stability of 1.9 ps at 30 s is achieved, which is mainly restrained by the low number of acquired photon pairs due to the low sampling rate of the utilized coincidence measurement system. Such implementation demonstrates the high practicability of the two-way quantum clock synchronization method for promoting field applications. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement |
| WOS关键词 | TIME TRANSFER |
| 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] ; Key Research Program of Frontier Science, Chinese Academy of Sciences[QYZDB-SW-SLH007] ; Strategic Priority Research Program of CAS[XDC07020200] ; Chinese Academy of Sciences Key Project[ZDRW-KT-2019-1-0103] ; Western Young Scholar Project of CAS[XAB2019B15] ; Western Young Scholar Project of CAS[XAB2019B17] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021408] ; West Light Foundation of the Chinese Academy of Sciences[29202082] |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| 出版者 | Optica Publishing Group |
| WOS记录号 | WOS:000781665200005 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Western Young Scholar Project of CAS ; Western Young Scholar Project of CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Western Young Scholar Project of CAS ; Western Young Scholar Project of CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Western Young Scholar Project of CAS ; Western Young Scholar Project of CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Western Young Scholar Project of CAS ; Western Young Scholar Project of CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences |
| 源URL | [http://210.72.145.45/handle/361003/13834]  |
| 专题 | 国家授时中心_量子频标研究室 |
| 通讯作者 | Zhang, Shougang; Dong, Ruifang |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Quan, Runai,Hong, Huibo,Xue, Wenxiang,et al. Implementation of field two-way quantum synchronization of distant clocks across a 7 km deployed fiber link[J]. OPTICS EXPRESS,2022,30(7):10269-10279. |
| APA | Quan, Runai.,Hong, Huibo.,Xue, Wenxiang.,Quan, Honglei.,Zhao, Wenyu.,...&Dong, Ruifang.(2022).Implementation of field two-way quantum synchronization of distant clocks across a 7 km deployed fiber link.OPTICS EXPRESS,30(7),10269-10279. |
| MLA | Quan, Runai,et al."Implementation of field two-way quantum synchronization of distant clocks across a 7 km deployed fiber link".OPTICS EXPRESS 30.7(2022):10269-10279. |
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来源：国家授时中心
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