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Free-space dissemination of time and frequency with 10(-19) instability over 113 km

文献类型：期刊论文

作者Shen, Qi6,7,8,9; Guan, Jian-Yu6,7,8,9; Ren, Ji-Gang6,7,8,9; Zeng, Ting6,7,8,9; Hou, Lei6,7,8,9; Li, Min6,7,8,9; Cao, Yuan6,7,8,9; Han, Jin-Jian6,7,8,9; Lian, Meng-Zhe6,7,8,9; Chen, Yan-Wei6,7,8,9
刊名NATURE
出版日期2022-10-27
卷号610期号:7933页码:661-+
ISSN号0028-0836
DOI10.1038/s41586-022-05228-5
通讯作者Jiang, Hai-Feng(hjiang1@ustc.edu.cn) ; Zhang, Qiang(qiangzh@ustc.edu.cn) ; Pan, Jian-Wei(pan@ustc.edu.cn)
英文摘要Networks of optical clocks find applications in precise navigation(1,2), in efforts to redefine the fundamental unit of the 'secone(3-6) and in gravitational tests(7). As the frequency instability for state-of-the-art optical clocks has reached the 10(-19) levels(8,9), the vision of a global-scale optical network that achieves comparable performances requires the dissemination oftime and frequency over a long-distance free-space link with a similar instability of 10(-19). However, previous attempts at free-space dissemination oftime and frequency at high precision did not extend beyond dozens of kilometres(10,11). Here we report time-frequency dissemination with an offset of 6.3 x 10(-20)+/- 3.4 x 10(-19) and an instability oflessthan 4 x 10(-19) at 10,000 sthrough a free-space link of113 km. Key technologies essential to this achievement include the deployment of high-power frequency combs, high-stability and high-efficiency optical transceiver systems and efficient linear optical sampling. We observe that the stability we have reached is retained for channel losses up to 89 dB. The technique we report can not only be directly used in ground-based applications, but could also lay the groundwork for future satellite time-frequency dissemination.
WOS关键词OPTICAL CLOCKS ; FIBER LINK
资助项目National Key Research and Development Programme of China[2017YFA0303900] ; National Key Research and Development Programme of China[2020YFA0309800] ; National Key Research and Development Programme of China[2020YFC2200103] ; Strategic Priority Research Programme of Chinese Academy of Sciences[XDB35030000] ; Strategic Priority Research Programme of Chinese Academy of Sciences[XDA15020400] ; National Natural Science Foundation of China[T2125010] ; National Natural Science Foundation of China[61825505] ; Anhui Initiative in Quantum Information Technologies[AHY010100] ; Key R&D Plan of Shandong Province[2020CXGC010105] ; Key R&D Plan of Shandong Province[2021ZDPT01] ; Key Research and Development Programme of Guangdong Province[2018B030325001] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01] ; Innovation Programme for Quantum Science and Technology[2021ZD0300100]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000864094100011
出版者NATURE PORTFOLIO
资助机构National Key Research and Development Programme of China ; Strategic Priority Research Programme of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Anhui Initiative in Quantum Information Technologies ; Key R&D Plan of Shandong Province ; Key Research and Development Programme of Guangdong Province ; Shanghai Municipal Science and Technology Major Project ; Innovation Programme for Quantum Science and Technology
源URL[http://ir.xao.ac.cn/handle/45760611-7/4933]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Jiang, Hai-Feng; Zhang, Qiang; Pan, Jian-Wei
作者单位1.Jinan Inst Quantum Technol, Jinan, Peoples R China
2.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China
5.Ningbo Univ, Fac Informat Sci & Engn, Ningbo, Peoples R China
6.Univ Sci & Technol China, Hefei Natl Lab, Hefei, Peoples R China
7.Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Shanghai, Peoples R China
8.Univ Sci & Technol China, Shanghai Res Ctr Quantum Sci, Shanghai, Peoples R China
9.Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci, Microscale & Sch Phys Sci, Hefei, Peoples R China
推荐引用方式
GB/T 7714		 Shen, Qi,Guan, Jian-Yu,Ren, Ji-Gang,et al. Free-space dissemination of time and frequency with 10(-19) instability over 113 km[J]. NATURE,2022,610(7933):661-+.
APA Shen, Qi.,Guan, Jian-Yu.,Ren, Ji-Gang.,Zeng, Ting.,Hou, Lei.,...&Pan, Jian-Wei.(2022).Free-space dissemination of time and frequency with 10(-19) instability over 113 km.NATURE,610(7933),661-+.
MLA Shen, Qi,et al."Free-space dissemination of time and frequency with 10(-19) instability over 113 km".NATURE 610.7933(2022):661-+.

入库方式： OAI收割

来源：新疆天文台

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