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Satellite-Relayed Intercontinental Quantum Network
Liao, Sheng-Kai1,2,3; Cai, Wen-Qi1,2,3; Handsteiner, Johannes4,5; Liu, Bo5,6; Yin, Juan1,2,3; Zhang, Liang3,7; Rauch, Dominik4,5; Fink, Matthias5; Ren, Ji-Gang1,2,3; Liu, Wei-Yue1,2,3; Li, Yang1,2,3; Shen, Qi1,2,3; Cao, Yuan1,2,3; Li, Feng-Zhi1,2,3; Wang, Jian-Feng8; Huang, Yong-Mei9; Deng, Lei10; Xi, Tao11; Ma, Lu12; Hu, Tai13; Li, Li1,2,3; Liu, Nai-Le1,2,3; Koidl, Franz14; Wang, Peiyuan14; Chen, Yu-Ao1,2,3; Wang, Xiang-Bin3; Steindorfer, Michael14; Kirchner, Georg14; Lu, Chao-Yang1,2,3; Shu, Rong3,7; Ursin, Rupert4,5; Scheidl, Thomas4,5; Peng, Cheng-Zhi1,2,3; Wang, Jian-Yu3,7; Zeilinger, Anton4,5; Pan, Jian-Wei1,2,3
Contribution Rank12

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.

WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordKey Distribution ; Bell Theorem ; Cryptography ; Communication
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000423317300004
Funding OrganizationNational Natural Science Foundation of China(U1738202) ; Strategic Priority Research Program on Space Science of the Chinese Academy of Sciences
Citation statistics
Cited Times:257[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, Ctr Excellence & Synerget Innovat, Ctr Quantum Informat & Quantum Phys, Chinese Acad Sci, Shanghai 201315, Peoples R China
4.Univ Vienna, Fac Phys, Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria
5.Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-1090 Vienna, Austria
6.Natl Univ Def Technol, Sch Comp, Changsha 410073, Hunan, Peoples R China
7.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai 200083, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
9.Chinese Acad Sci, Inst Opt & Elect, Key Lab Opt Engn, Chengdu 610209, Sichuan, Peoples R China
10.Shanghai Engn Ctr Microsatellites, Shanghai 201203, Peoples R China
11.Xian Satellite Control Ctr, State Key Lab Astronaut Dynam, Xian 710061, Shaanxi, Peoples R China
12.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
13.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100080, Peoples R China
14.Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
Recommended Citation
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):030501.
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),030501.
MLA Liao, Sheng-Kai,et al."Satellite-Relayed Intercontinental Quantum Network".PHYSICAL REVIEW LETTERS 120.3(2018):030501.
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