The design of entangled source for free space quantum communications
The design of entangled source for free space quantum communications
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自由空间量子通信纠缠源设计
DOI：
10.7498/aps.57.1356
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发表时间：
2008-03
期刊：
影响因子：
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通讯作者：
Wang Xiang-Bin
中科院分区：
文献类型：
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作者：
Jin Xian-Min;Peng Cheng-Zhi;Ren Ji-Gang;Yang Dong;Wang Shao-Kai;Jiang Shuo;Yang Bin;Wang Xiang-Bin
设计了适合自由空间量子通讯实验的纠缠源.经单模光纤后的符合计数率为20000cps。在水平垂直基底上，缠结可见度大于95%，在对角基底上，缠结可见度大于90%。 在本地得到了大于100个标准偏差的Bell 不等式破缺. 满足20 km量级的自由空间量子通讯试验要求.
We design and build an entanglement source suitable for free space quantum communications experiment. The coincidence counting rate after single mode fiber is 20000 cps. The entanglement visibility is more than 95% in horizontal vertical base and more than 90% in diagonal base. The Bell inequality was broken by more than 100 standard deviations in local experiment. The entanglement source satisfies the requirements for 20 km free space quantum communications experiment.