摘要
We present two theorems on calculating the relative entropy of entanglement.Theorem 1 is an extension of Vedral and Plenio's theorem(Phys.Rev.A 57(1998)1619)for pure states,which is useful for calculating the relative entropy of entanglement for all pure states as well as for a class of mixed states.Theorem 2 gives the relative entropy of entanglement for any bipartite state whose tripartite purification has two separable reduced bipartite states.
作者
吴盛俊
吴强
张永德
WU Sheng-Jun;WU Qiang;ZHANG Yong-De(Laboratory of Quantum Communication and Quantum Computation and Department of Modern Physics,University of Science and Technology of China,Hefei 230027;Department of Astronomy and Applied Physics,University of Science and Technology of China,Hefei 230026)
基金
Supported by National Natural Science Foundation of China under Grant No.19975043.
