ua nt - p h / 02 09 04 8 v 1 6 S ep 2 00 2 Criterion for local distinguishability of arbitrary orthogonal states
نویسنده
چکیده
In this paper we present a necessary condition of distinguishability of othogonal multi-partite quantum states. With this condition one can discuss some especial cases for distinguishability further. We also present a necessary condition of distinguishability of bipartite quantum states which is simple and general. With this condition one can get many cases of indistinguishability. The conclusions may be useful in understanding the essence of nonlocality and calculating the distillable entanglement and the bound of distillable entanglement. PACS number(s): 89.70.+c, 03.65.ud
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