Accessible nonlinear entanglement witnesses
Accessible nonlinear entanglement witnesses
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DOI：
10.1103/physreva.85.062327
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发表时间：
2012-03
影响因子：
2.9
通讯作者：
J. M. Arrazola;O. Gittsovich;N. Lutkenhaus
中科院分区：
文献类型：
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作者：
J. M. Arrazola;O. Gittsovich;N. Lutkenhaus
(日期：2013年12月21日)Verifi纠缠阳离子是表征用于量子计算和通信应用的源和设备的重要工具。在绝大多数实验中，纠缠见证(EW)被用来证明量子态中纠缠的存在，纠缠见证可以根据现有的测量结果来构造，而不需要重建整个密度矩阵(全层析成像)，这对于高维系统特别有价值。我们提供了一种构建
(Dated: December 21, 2013)Verification of entanglement is an important tool to characterize sources and devices for use inquantum computing and communication applications. In a vast majority of experiments entangle-ment witnesses (EW) are used in order to prove the presence of entanglement in a quantum state.EWs can be constructed from available measurement results and do not require a reconstruction ofthe whole density matrix (full tomography), which is especially valuable for high-dimensional sys-tems. We provide a method to construct