{"paper":{"title":"Satellite-Based Entanglement Distribution Over 1200 kilometers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics","physics.space-ph"],"primary_cat":"quant-ph","authors_text":"Bo Li, Chao-Yang Lu, Cheng-Zhi Peng, Dong He, Feng-Zhi Li, Ge Ren, Guang-Bing Li, Hui Dai, Jian-Jun Jia, Jian-Wei Pan, Jian-Yu Wang, Ji-Gang Ren, Juan Yin, Liang Zhang, Ming Li, Nai-Le Liu, Na Wang, Qi-Ming Lu, Rong Shu, Sheng-Kai Liao, Shuang-Lin Li, Wei-Yue Liu, Wen-Qi Cai, Xiang Chang, Xiao-Xiang Zhang, Ya-Yun Yin, Yi-Lin Zhou, Yuan Cao, Yu-Ao Chen, Yu-Huai Li, Yun-Hong Gong, Yu Xu, Zhen-Cai Zhu, Zi-Qing Jiang","submitted_at":"2017-07-05T12:02:04Z","abstract_excerpt":"Long-distance entanglement distribution is essential both for foundational tests of quantum physics and scalable quantum networks. Owing to channel loss, however, the previously achieved distance was limited to ~100 km. Here, we demonstrate satellite-based distribution of entangled photon pairs to two locations separated by 1203 km on the Earth, through satellite-to-ground two-downlink with a sum of length varies from 1600 km to 2400 km. We observe a survival of two-photon entanglement and a violation of Bell inequality by 2.37+/-0.09 under strict Einstein locality conditions. The obtained eff"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.01339","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}