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	Satellite-Relayed Intercontinental Quantum Network
	Liao, Sheng-Kai1,2; Cai, Wen-Qi1,2; Handsteiner, Johannes3,4; Liu, Bo4,5; Yin, Juan1,2; Zhang, Liang2,6; Rauch, Dominik3,4; Fink, Matthias4; Ren, Ji-Gang1,2; Liu, Wei-Yue1,2
刊名	PHYSICAL REVIEW LETTERS
	2018-01-19
卷号	120期号:3页码:30501
关键词	Orbits Quantum theory Satellite ground stations Satellites
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.120.030501
文献子类	J
英文摘要	We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and multiple ground stations located in Xinglong, Nanshan, and Graz, which establish satellite-to-ground secure keys with similar to kHz rate per passage of the satellite Micius over a ground station. The satellite thus establishes a secure key between itself and, say, Xinglong, and another key between itself and, say, Graz. Then, upon request from the ground command, Micius acts as a trusted relay. It performs bitwise exclusive OR operations between the two keys and relays the result to one of the ground stations. That way, a secret key is created between China and Europe at locations separated by 7600 km on Earth. These keys are then used for intercontinental quantum-secured communication. This was, on the one hand, the transmission of images in a one-time pad configuration from China to Austria as well as from Austria to China. Also, a video conference was performed between the Austrian Academy of Sciences and the Chinese Academy of Sciences, which also included a 280 km optical ground connection between Xinglong and Beijing. Our work clearly confirms the Micius satellite as a robust platform for quantum key distribution with different ground stations on Earth, and points towards an efficient solution for an ultralong-distance global quantum network.
语种	英语
WOS记录号	WOS:000423317300004
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9394]
专题	光电技术研究所_光电工程总体研究室（一室）
作者单位	1.Hefei National Laboratory for Physical Sciences at the Microscale, Department of Modern Physics, University of Science and Technology of China, Hefei; 230026, China; 2.Chinese Academy of Sciences (CAS) Center for Excellence, Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai; 201315, China; 3.Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Vienna; 1090, Austria; 4.Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Vienna; 1090, Austria; 5.School of Computer, National University of Defense Technology, Changsha; 410073, China; 6.Key Laboratory of Space Active Opto-Electronic Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai; 200083, China; 7.National Astronomical Observatories, Chinese Academy of Sciences, Beijing; 100012, China; 8.Key Laboratory of Optical Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 9.Shanghai Engineering Center for Microsatellites, Shanghai; 201203, China; 10.State Key Laboratory of Astronautic Dynamics, Xi'An Satellite Control Center, Xi'an; 710061, China;
推荐引用方式 GB/T 7714	Liao, Sheng-Kai,Cai, Wen-Qi,Handsteiner, Johannes,et al. Satellite-Relayed Intercontinental Quantum Network[J]. PHYSICAL REVIEW LETTERS,2018,120(3):30501.
APA	Liao, Sheng-Kai.,Cai, Wen-Qi.,Handsteiner, Johannes.,Liu, Bo.,Yin, Juan.,...&Pan, Jian-Wei.(2018).Satellite-Relayed Intercontinental Quantum Network.PHYSICAL REVIEW LETTERS,120(3),30501.
MLA	Liao, Sheng-Kai,et al."Satellite-Relayed Intercontinental Quantum Network".PHYSICAL REVIEW LETTERS 120.3(2018):30501.

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