| Literature DB >> 28619937 |
Juan Yin1,2, Yuan Cao1,2, Yu-Huai Li1,2, Sheng-Kai Liao1,2, Liang Zhang2,3, Ji-Gang Ren1,2, Wen-Qi Cai1,2, Wei-Yue Liu1,2, Bo Li1,2, Hui Dai1,2, Guang-Bing Li1,2, Qi-Ming Lu1,2, Yun-Hong Gong1,2, Yu Xu1,2, Shuang-Lin Li1,2, Feng-Zhi Li1,2, Ya-Yun Yin1,2, Zi-Qing Jiang3, Ming Li3, Jian-Jun Jia3, Ge Ren4, Dong He4, Yi-Lin Zhou5, Xiao-Xiang Zhang6, Na Wang7, Xiang Chang8, Zhen-Cai Zhu5, Nai-Le Liu1,2, Yu-Ao Chen1,2, Chao-Yang Lu1,2, Rong Shu2,3, Cheng-Zhi Peng9,2, Jian-Yu Wang10,3, Jian-Wei Pan9,2.
Abstract
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.Year: 2017 PMID： 28619937 DOI： 10.1126/science.aan3211
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728