Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab

doi:10.1088/0256-307X/34/9/090302

	Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab
	Lu, Chao-Yang 2,3,4,5; Ma, Xiongfeng 4,5; Shu, Rong 4,5,6; Peng, Cheng-Zhi 2,3,4,5; Wang, Jian-Yu 4,5,6; Pan, Jian-Wei 2,3,4,5; Li, Yang2,3,4,5 ; Shen, Qi 2,3,4,5; Zhang, Liang 4,5,6; Liang, Xue-Feng 7
刊名	CHINESE PHYSICS LETTERS
	2017-08-01
卷号	34 期号:9
DOI	10.1088/0256-307X/34/9/090302
文献子类	Article
英文摘要	Quantum technology establishes a foundation for secure communication via quantum key distribution (QKD). In the last two decades, the rapid development of QKD makes a global quantum communication network feasible. In order to construct this network, it is economical to consider small-sized and low-cost QKD payloads, which can be assembled on satellites with different sizes, such as space stations. Here we report an experimental demonstration of space-to-ground QKD using a small-sized payload, from Tiangong-2 space lab to Nanshan ground station. The 57.9-kg payload integrates a tracking system, a QKD transmitter along with modules for synchronization, and a laser communication transmitter. In the space lab, a 50 MHz vacuum + weak decoy-state optical source is sent through a reflective telescope with an aperture of 200 mm. On the ground station, a telescope with an aperture of 1200 mm collects the signal photons. A stable and high-transmittance communication channel is set up with a high-precision bidirectional tracking system, a polarization compensation module, and a synchronization system. When the quantum link is successfully established, we obtain a key rate over 100 bps with a communication distance up to 719 km. Together with our recent development of QKD in daylight, the present demonstration paves the way towards a practical satellite-constellation-based global quantum secure network with small-sized QKD payloads.
WOS关键词	COMMUNICATION ; DAYLIGHT ; SYSTEMS ; SECURE
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000412913300005
资助机构	Technology and Engineering Center for Space Utilization Chinese Academy of Sciences, Chinese Academy of Sciences ; Technology and Engineering Center for Space Utilization Chinese Academy of Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Technology and Engineering Center for Space Utilization Chinese Academy of Sciences, Chinese Academy of Sciences ; Technology and Engineering Center for Space Utilization Chinese Academy of Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20109]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Inst Opt & Elect, Key Lab Opt Engn, Chengdu 610209, Peoples R China 2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 4.CAS Ctr Excellence, Shanghai Branch, Shanghai 201315, Peoples R China 5.Synerget Innovat Ctr Quantum Informat & Quantum P, Shanghai 201315, Peoples R China 6.Chinese Acad Sci, Key Lab Space Act Optoelect Technol, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China 7.Beijing UCAS Space Technol Co Ltd, Beijing 100190, Peoples R China 8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 9.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Lu, Chao-Yang,Ma, Xiongfeng,Shu, Rong,et al. Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab[J]. CHINESE PHYSICS LETTERS,2017,34(9).
APA	Lu, Chao-Yang.,Ma, Xiongfeng.,Shu, Rong.,Peng, Cheng-Zhi.,Wang, Jian-Yu.,...&Zhang, Qiang.(2017).Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab.CHINESE PHYSICS LETTERS,34(9).
MLA	Lu, Chao-Yang,et al."Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab".CHINESE PHYSICS LETTERS 34.9(2017).