Satellite-to-ground quantum key distribution
文献类型:期刊论文
作者 | Sun, Li-Hua1,8,10; Chen, Xia-Wei1,8,10; Li, Yang1,8,10; Zhang, Liang1,9; Liu, Wei-Yue1,8,10; Cai, Wen-Qi1,8,10; Wang, Jian-Feng2; Jiang, Xiao-Jun2; Ren, Ji-Gang1,8,10; Wu, Jin-Cai9 |
刊名 | NATURE |
出版日期 | 2017-09-07 |
卷号 | 549期号:7670页码:43-+ |
ISSN号 | 0028-0836 |
DOI | 10.1038/nature23655 |
产权排序 | 9 |
文献子类 | Article |
英文摘要 | Quantum key distribution (QKD) uses individual light quanta in quantum superposition states to guarantee unconditional communication security between distant parties. However, the distance over which QKD is achievable has been limited to a few hundred kilometres, owing to the channel loss that occurs when using optical fibres or terrestrial free space that exponentially reduces the photon transmission rate. Satellite-based QKD has the potential to help to establish a global-scale quantum network, owing to the negligible photon loss and decoherence experienced in empty space. Here we report the development and launch of a low-Earth-orbit satellite for implementing decoy-state QKD-a form of QKD that uses weak coherent pulses at high channel loss and is secure because photon-number-splitting eavesdropping can be detected. We achieve a kilohertz key rate from the satellite to the ground over a distance of up to 1,200 kilometres. This key rate is around 20 orders of magnitudes greater than that expected using an optical fibre of the same length. The establishment of a reliable and efficient space-to-ground link for quantum-state transmission paves the way to global-scale quantum networks. |
URL标识 | 查看原文 |
WOS关键词 | Entanglement Distribution ; Atomic Ensembles ; Linear Optics ; Communication ; Teleportation ; Cryptography ; Purification ; Repeaters ; Channels ; Network |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
WOS记录号 | WOS:000409388700029 |
资助机构 | Strategic Priority Research Program on Space Science, Chinese Academy of Sciences ; National Natural Science Foundation of China |
源URL | [http://ir.xao.ac.cn/handle/45760611-7/1754] |
专题 | 新疆天文台_光学天文与技术应用研究室 |
通讯作者 | Peng, Cheng-Zhi |
作者单位 | 1.Univ Sci & Technol China, CAS, Ctr Excellence & Synerget Innovat, Ctr Quantum Informat & Quantum Phys, Shanghai 201315, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Inst Opt & Elect, Key Lab Opt Engn, Chengdu 610209, Sichuan, Peoples R China 4.Shanghai Engn Ctr Microsatellites, Shanghai 201203, Peoples R China 5.Xian Satellite Control Ctr, State Key Lab Astronaut Dynam, Xian 710061, Shaanxi, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 7.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China 8.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 9.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai 200083, Peoples R China 10.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Li-Hua,Chen, Xia-Wei,Li, Yang,et al. Satellite-to-ground quantum key distribution[J]. NATURE,2017,549(7670):43-+. |
APA | Sun, Li-Hua.,Chen, Xia-Wei.,Li, Yang.,Zhang, Liang.,Liu, Wei-Yue.,...&Wang, Xiang-Bin.(2017).Satellite-to-ground quantum key distribution.NATURE,549(7670),43-+. |
MLA | Sun, Li-Hua,et al."Satellite-to-ground quantum key distribution".NATURE 549.7670(2017):43-+. |
入库方式: OAI收割
来源:新疆天文台
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