量化非正交性
Quantifying nonorthogonality
摘要：
一个探索性的方法来分析非正交性作为一个可量化的属性的可能性。三种不同的措施，纯态的非正交性，并将这些措施之一扩展到单粒子密度矩阵使用的方法是类似于最近推出的量化纠缠技术。几个有趣的特殊情况被认为是。指出非正交性测度可以有意义地与单个混合量子态相联系。然后，它示出了如何非正交性可以解锁与经典信息，这种分析揭示了有趣的不平等和点之间的连接非正交性和纠缠。
英文摘要：
An exploratory approach to the possibility of analyzing nonorthogonality as a quantifiable property is presented. Three different measures for the nonorthogonality of pure states are introduced, and one of these measures is extended to single-particle density matrices using methods that are similar to recently introduced techniques for quantifying entanglement. Several interesting special cases are considered. It is pointed out that a measure of nonorthogonality can meaningfully be associated with a single mixed quantum state. It is then shown how nonorthogonality can be unlocked with classical information; this analysis reveals interesting inequalities and points to a number of connections between nonorthogonality and entanglement.
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