Criterion for distinguishability of arbitrary bipartite orthogonal states

Details Criterion for distinguishability of arbitrary bipartite orthogonal states Criterion for distinguishability of arbitrary bipartite orthogonal states

2002-08-09

arxiv.org/abs/quant-ph/0208059v2

Physics

Quantum Physics

7 pages

Scientific paper

In this paper we present a necessary and sufficient condition of distinguishability of bipartite quantum states. It is shown that the operators to reliably distinguish states need only rounds of projective measurements and classical comunication. 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.

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