An error-free protocol for quantum entanglement distribution in long-distance quantum communication

查看全文 作　　者：SALEMIAN [1]Shamsolah;MOHAMMADNEJAD [1]Shahram

机构地区：[1]Nanoptronics Research Center, Department of Electronics and Electrical Engineering, Iran University of Science and Technology

出　　处：《Chinese Science Bulletin》索引2011年第56卷第7期,共8页

摘　　要：Quantum entanglement distribution is an essential part of quantum communication and computation protocols. Here, linear optic elements are employed for the distribution of quantum entanglement over a long distance. Polarization beam splitters and wave plates are used to realize an error-free protocol for broadcasting quantum entanglement in optical quantum communication. This protocol can determine the maximum distance of quantum communication without decoherence. Error detection and error correc-tion are performed in the proposed scheme. In other words, if there is a bit flip along the quantum channel, the end stations (Alice and Bob) can detect this state change and obtain the correct state (entangled photon) at another port. Existing general error detec-tion protocols are based on the quantum controlled-NOT (CNOT) or similar quantum logic operations, which are very difficult to implement experimentally. Here we present a feasible scheme for the implementation of entanglement distribution based on a linear optics element that does not need a quantum CNOT gate. 关键词：光量子通信量子纠缠协议长距离分发错误检测量子逻辑运算光学元件

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An error-free protocol for quantum entanglement distribution in long-distance quantum communication

参考文献(51)

引证文献(12)

耦合文献(82)

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