High-dimensional entanglement concentration of twisted photon pairs

High-dimensional entanglement concentration of twisted photon pairs
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扭曲光子对的高维纠缠集中

DOI:
10.7452/lapl.201210066
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发表时间:
2012-08
影响因子:
1.7
通讯作者:
Wu Qiuping
Wu Qiuping
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Chen Lixiang;Wu Qiuping

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最近,Dada等人报道了实验上的纠缠浓度和轨道角动量(OAM)对广义Bell不等式的破坏[Nat.Phys.7,677(2011)]。在这里,我们证明了高维纠缠浓度可以在任意的OAM子空间进行选择性。在不违反广义Bell不等式的前提下,利用双光子OAM Klyshko图像直观地描述了当前纠缠浓缩的工作原理,并通过浓缩后的实验Shannon维数证实和量化了其良好的性能.
Recently, Dada et al. reported on the experimental entanglement concentration and violation of generalized Bell inequalities with orbital angular momentum (OAM) [Nat. Phys. 7, 677 (2011)]. Here we demonstrate that the high-dimensional entanglement concentration can be performed in arbitrary OAM subspaces with selectivity. Instead of violating the generalized Bell inequalities, the working principle of present entanglement concentration is visualized by the biphoton OAM Klyshko picture, and its good performance is confirmed and quantified through the experimental Shannon dimensionalities after concentration.
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