共轭态的保真度与共现
Fidelity and Concurrence of conjugated states
摘要：
我们证明了一些新的属性的保真度（转移概率）和并发性，后者定义的直接扩展的Wootters符号。选择一个共轭，并考虑保真度或共存对共轭密度算子对的依赖性。这些功能原来是凹或凸屋顶。最佳分解构造。两个和三个系统的一些应用说明了一般定理。
英文摘要：
We prove some new properties of fidelity (transition probability) and concurrence, the latter defined by straightforward extension of Wootters notation. Choose a conjugation and consider the dependence of fidelity or of concurrence on conjugated pairs of density operators. These functions turn out to be concave or convex roofs. Optimal decompositions are constructed. Some applications to two- and tripartite systems illustrate the general theorem.
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