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Satellite-based entanglement distribution over 1200 kilometers
Yin, Juan1,2; Cao, Yuan1,2; Li, Yu-Huai1,2; Liao, Sheng-Kai1,2; Zhang, Liang2,3; Ren, Ji-Gang1,2; Cai, Wen-Qi1,2; Liu, Wei-Yue1,2; Li, Bo1,2; Dai, Hui1,2; Li, Guang-Bing1,2; Lu, Qi-Ming1,2; Gong, Yun-Hong1,2; Xu, Yu1,2; Li, Shuang-Lin1,2; Li, Feng-Zhi1,2; Yin, Ya-Yun1,2; Jiang, Zi-Qing3; Li, Ming3; Jia, Jian-Jun3; Ren, Ge4; He, Dong4; Zhou, Yi-Lin5; Zhang, Xiao-Xiang6; Wang, Na7; Chang, Xiang8; Zhu, Zhen-Cai5; Liu, Nai-Le1,2; Chen, Yu-Ao1,2; Lu, Chao-Yang1,2; Shu, Rong2,3; Peng, Cheng-Zhi1,2; Wang, Jian-Yu2,3; Pan, Jian-Wei1,2
2017
发表期刊Science
ISSN0036-8075
卷号356期号:6343页码:1140-1144
摘要Long-distance entanglement distribution is essential for both foundational tests of quantum physics and scalable quantum networks. Owing to channel loss, however, the previously achieved distance was limited to ∼100 kilometers. Here we demonstrate satellite-based distribution of entangled photon pairs to two locations separated by 1203 kilometers on Earth, through two satellite-to-ground downlinks with a summed length varying from 1600 to 2400 kilometers. We observed a survival of two-photon entanglement and a violation of Bell inequality by 2.37 ± 0.09 under strict Einstein locality conditions. The obtained effective link efficiency is orders of magnitude higher than that of the direct bidirectional transmission of the two photons through telecommunication fibers.
关键词efficiency measurement - network analysis - physics - quantum mechanics - satellite imagery - spatial distribution - telecommunication
收录类别SCI ; Ei
语种英语
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8887
专题光电工程总体研究室(一室)
作者单位1.Department of Modern Physics, University of Science and Technology of China, Hefei National Laboratory for Physical Sciences at Microscale, Hefei; 230026, China;
2.Chinese Academy of Sciences (CAS), Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai; 201315, China;
3.Key Laboratory of Space Active Opto-Electronic Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai; 200083, China;
4.Key Laboratory of Optical Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
5.Shanghai Engineering Center for Microsatellites, Shanghai; 201203, China;
6.Key Laboratory of Space Object and Debris Observation, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing; 210008, China;
7.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi; 830011, China;
8.Yunnan Observatories, Chinese Academy of Sciences, Kunming; 650011, China
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Yin, Juan,Cao, Yuan,Li, Yu-Huai,et al. Satellite-based entanglement distribution over 1200 kilometers[J]. Science,2017,356(6343):1140-1144.
APA Yin, Juan.,Cao, Yuan.,Li, Yu-Huai.,Liao, Sheng-Kai.,Zhang, Liang.,...&Pan, Jian-Wei.(2017).Satellite-based entanglement distribution over 1200 kilometers.Science,356(6343),1140-1144.
MLA Yin, Juan,et al."Satellite-based entanglement distribution over 1200 kilometers".Science 356.6343(2017):1140-1144.
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