Experimentally realizable characterizations of continuous-variable Gaussian states
Experimentally realizable characterizations of continuous-variable Gaussian states
复制标题
连续变量高斯态的实验可实现表征
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
W. Munro
中科院分区：
文献类型：
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作者：
M. Kim;Jinhyoung Lee;W. Munro
纠缠度、保真度和纯度是量子信息处理的基本尺度。我们提出了如何实现这些措施，使用线性器件和零差检测器连续变量高斯状态。特别是，纠缠的测试变得简单，一些先验知识，这是相关的当前的实验。
Measures of entanglement, fidelity and purity are basic yardsticks in quantum information processing. We propose how to implement these measures using linear devices and homodyne detectors for continuous variable Gaussian states. In particular, the test of entanglement becomes simple with some prior knowledge which is relevant to current experiments.