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Ground-to-satellite quantum teleportation
文献类型：期刊论文
| 作者 | Han, Xuan2,3,4; Yang, Kui-Xing2,3,4; Li, Li2,3,4; Yang, Meng2,3,4; Cai, Wen-Qi2,3,4; Liu, Wei-Yue2,3,4; Yin, Juan2,3,4; Liao, Sheng-Kai2,3,4; Zhang, Liang4,5; Yong, Hai-Lin2,3,4 |
| 刊名 | NATURE
 |
| 出版日期 | 2017-09-07 |
| 卷号 | 549期号:7670页码:70-+ |
| DOI | 10.1038/nature23675 |
| 文献子类 | Article |
| 英文摘要 | An arbitrary unknown quantum state cannot be measured precisely or replicated perfectly(1). However, quantum teleportation enables unknown quantum states to be transferred reliably from one object to another over long distances(2), without physical travelling of the object itself. Long-distance teleportation is a fundamental element of protocols such as large-scale quantum networks(3,4) and distributed quantum computation(5,6). But the distances over which transmission was achieved in previous teleportation experiments, which used optical fibres and terrestrial free-space channels(7-12), were limited to about 100 kilometres, owing to the photon loss of these channels. To realize a global-scale 'quantum internet'(13) the range of quantum teleportation needs to be greatly extended. A promising way of doing so involves using satellite platforms and space-based links, which can connect two remote points on Earth with greatly reduced channel loss because most of the propagation path of the photons is in empty space. Here we report quantum teleportation of independent single-photon qubits from a ground observatory to a low-Earth-orbit satellite, through an uplink channel, over distances of up to 1,400 kilometres. To optimize the efficiency of the link and to counter the atmospheric turbulence in the uplink, we use a compact ultra-bright source of entangled photons, a narrow beam divergence and high-bandwidth and high-accuracy acquiring, pointing and tracking. We demonstrate successful quantum teleportation of six input states in mutually unbiased bases with an average fidelity of 0.80 +/- 0.01, well above the optimal state-estimation fidelity on a single copy of a qubit (the classical limit)(14). Our demonstration of a ground-to-satellite uplink for reliable and ultra-long-distance quantum teleportation is an essential step towards a global-scale quantum internet. |
| WOS关键词 | ENTANGLEMENT DISTRIBUTION ; NETWORK ; KILOMETERS ; OPERATIONS ; CHANNELS ; MATTER ; LIGHT ; SPINS ; STATE |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000409388700034 |
| 资助机构 | Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/20088]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Shanghai Engn Ctr Microsatellites, Shanghai 201203, Peoples R China 2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China 3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 4.Univ Sci & Technol China, CAS, Ctr Excellence & Synerget Innovat Ctr Quantum Inf, Shanghai 201315, Peoples R China 5.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai 200083, Peoples R China 6.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 7.Chinese Acad Sci, Nanjing Astron Instruments Co Ltd, Nanjing 210042, Jiangsu, Peoples R China 8.Beijing Inst Tracking & Telecommun Technol, Beijing 100094, Peoples R China 9.Xian Satellite Control Ctr, State Key Lab Astronaut Dynam, Xian 710061, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Xuan,Yang, Kui-Xing,Li, Li,et al. Ground-to-satellite quantum teleportation[J]. NATURE,2017,549(7670):70-+. |
| APA | Han, Xuan.,Yang, Kui-Xing.,Li, Li.,Yang, Meng.,Cai, Wen-Qi.,...&Yao, Yong-Qiang.(2017).Ground-to-satellite quantum teleportation.NATURE,549(7670),70-+. |
| MLA | Han, Xuan,et al."Ground-to-satellite quantum teleportation".NATURE 549.7670(2017):70-+. |
入库方式： OAI收割
来源：国家天文台
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