论文标题
通过随机测量检测未知连续变量状态的纠缠
Detecting entanglement of unknown continuous variable states with random measurements
论文作者
论文摘要
我们通过基于协方差矩阵在连续可变系统中纠缠纠缠检测的可能性，可根据随机同伴测量构建。我们提出了基于第二瞬间表征纠缠证人的新线性约束，并在半段计划中使用它们，为给定的随机测量提供了最佳的纠缠测试。我们测试了挤压真空状态的类别的方法，并研究一般未知的协方差矩阵中的纠缠检测效率。
We explore the possibility of entanglement detection in continuous variable systems by entanglement witnesses based on covariance matrices, constructible from random homodyne measurements. We propose new linear constraints characterizing the entanglement witnesses based on second moments, and use them in a semidefinite program providing the optimal entanglement test for given random measurements. We test the method on the class of squeezed vacuum states and study the efficiency of entanglement detection in general unknown covariance matrices.
