Local conversion of four Einstein-Podolsky-Rosen photon pairs into four-photon polarization-entangled decoherence-free states with non-photon-number-resolving detectors.
Local conversion of four Einstein-Podolsky-Rosen photon pairs into four-photon polarization-entangled decoherence-free states with non-photon-number-resolving detectors.
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DOI：
10.1364/oe.19.025433
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发表时间：
2011-12
期刊：
影响因子：
3.8
通讯作者：
Hong‐Fu Wang;Shou Zhang;Ai‐Dong Zhu;X. Yi;K. Yeon
中科院分区：
文献类型：
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作者：
Hong‐Fu Wang;Shou Zhang;Ai‐Dong Zhu;X. Yi;K. Yeon
我们提出了一种基于线性光学的方案，使用局部操作和经典通信将分布在五方之间的四个爱因斯坦-波多尔斯基-罗森光子对局部转换为四光子偏振纠缠无退相干态。所提出的装置涉及简单的线性光学元件和非光子数分辨探测器，它们只能区分光子的存在和不存在，并且无法获得有关光子的确切数量的信息。这极大地简化了线性光量子计算和量子信息处理的实验实现。
We propose a linear-optics-based scheme for local conversion of four Einstein-Podolsky-Rosen photon pairs distributed among five parties into four-photon polarization-entangled decoherence-free states using local operations and classical communication. The proposed setup involves simple linear optical elements and non-photon-number-resolving detectors that can only distinguish between the presence and absence of photons, and no information on the exact number of photons can be obtained. This greatly simplifies the experimental realization for linear optical quantum computation and quantum information processing.