Satellite-based entanglement distribution over 1200 kilometers

被引：924

作者：

Yin, Juan ^{[1
,2
,3
,4
]}

Cao, Yuan ^{[1
,2
,3
,4
]}

Li, Yu-Huai ^{[1
,2
,3
,4
]}

Liao, Sheng-Kai ^{[1
,2
,3
,4
]}

Zhang, Liang ^{[3
,4
,5
]}

Ren, Ji-Gang ^{[1
,2
,3
,4
]}

Cai, Wen-Qi ^{[1
,2
,3
,4
]}

Liu, Wei-Yue ^{[1
,2
,3
,4
]}

Li, Bo ^{[1
,2
,3
,4
]}

Dai, Hui ^{[1
,2
,3
,4
]}

Li, Guang-Bing ^{[1
,2
,3
,4
]}

Lu, Qi-Ming ^{[1
,2
,3
,4
]}

Gong, Yun-Hong ^{[1
,2
,3
,4
]}

Xu, Yu ^{[1
,2
,3
,4
]}

Li, Shuang-Lin ^{[1
,2
,3
,4
]}

Li, Feng-Zhi ^{[1
,2
,3
,4
]}

Yin, Ya-Yun ^{[1
,2
,3
,4
]}

Jiang, Zi-Qing ^{[5
]}

Li, Ming ^{[5
]}

Jia, Jian-Jun ^{[5
]}

Ren, Ge ^{[6
]}

He, Dong ^{[6
]}

Zhou, Yi-Lin ^{[7
]}

Zhang, Xiao-Xiang ^{[8
]}

Wang, Na ^{[9
]}

Chang, Xiang ^{[10
]}

Zhu, Zhen-Cai ^{[7
]}

Liu, Nai-Le ^{[1
,2
,3
,4
]}

Chen, Yu-Ao ^{[1
,2
,3
,4
]}

Lu, Chao-Yang ^{[1
,2
,3
,4
]}

Shu, Rong ^{[5
]}

Peng, Cheng-Zhi ^{[1
,2
,3
,4
]}

Wang, Jian-Yu ^{[3
,4
,5
]}

Pan, Jian-Wei ^{[1
,2
,3
,4
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Ctr Excellence, CAS, Shanghai 201315, Peoples R China

[4] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, 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, Inst Opt & Elect, Key Lab Opt Engn, Chengdu 610209, Peoples R China

[7] Shanghai Engn Ctr Microsatellites, Shanghai 201203, Peoples R China

[8] Chinese Acad Sci, Key Lab Space Object & Debris Observat, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China

[9] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China

[10] Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China

来源：

SCIENCE | 2017年 / 356卷 / 6343期

基金：

中国国家自然科学基金;

关键词：

EXPERIMENTAL REALIZATION; QUANTUM STATE; PURIFICATION; VIOLATION;

D O I：

10.1126/science.aan3211

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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 similar 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.

引用

页码：1140 / 1144

页数：5

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