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题名: Satellite-based entanglement distribution over 1200 kilometers
作者: Yin, Juan; Cao, Yuan; Li, Yu-Huai; Liao, Sheng-Kai; Zhang, Liang; Ren, Ji-Gang; Cai, Wen-Qi; Liu, Wei-Yue; Li, Bo; Dai, Hui; Li, Guang-Bing; Lu, Qi-Ming; Gong, Yun-Hong; Xu, Yu; Li, Shuang-Lin; Li, Feng-Zhi; Yin, Ya-Yun; Jiang, Zi-Qing; Li, Ming; Jia, Jian-Jun; Ren, Ge; He, Dong; Zhou, Yi-Lin; Zhang, Xiao-Xiang; Wang, Na; Chang, Xiang; Zhu, Zhen-Cai; Liu, Nai-Le; Chen, Yu-Ao; Lu, Chao-Yang; Shu, Rong; Peng, Cheng-Zhi; Wang, Jian-Yu; Pan, Jian-Wei
刊名: SCIENCE
出版日期: 2017
卷号: 356, 期号:6343, 页码:aan3211-
英文摘要: 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.
语种: 英语
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17365
Appears in Collections:空间目标与碎片观测研究基地_期刊论文

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