Fidelity and Concurrence of conjugated states
作者： Armin Uhlmann
DOI: 10.1103/PHYSREVA.62.032307
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摘要: We prove some properties of fidelity (transition probability) and concurrence, the latter defined by a straightforward extension Wootters' notation. Choose conjugation consider dependence or concurrence on conjugated pairs density operator. These functions turn out to be concave convex roofs. Optimal decompositions are constructed. Some applications two tripartite systems illustrate general theorems.
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