偏紧度的一些性质
Some properties of partial fidelities
摘要：
讨论了Uhlmann偏紧性的基本性质。POVM测量的统计解释建立。被认为是多重属性。导出了部分迹线度与分块迹距离之间的关系。如图所示，在单随机量子操作下，偏量子数不能减少。因此，部分结晶度在其用作结晶度测量的意义上具有良好的性质。
英文摘要：
Basic properties of Uhlmann's partial fidelities are discussed. Statistical interpretation in terms of POVM measurements is established. Multiplicativity properties are considered. The relationship between partial fidelities and partitioned trace distances is derived. As it is shown, the partial fidelities cannot decrease under unistochastic quantum operations. Thus, the partial fidelities have good properties in the sense of their use as distinguishability measures.
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