Distinguishability of Bell States

Ghosh, Sibasish ; Kar, Guruprasad ; Roy, Anirban ; Sen(De), Aditi ; Sen, Ujjwal (2001) Distinguishability of Bell States Physical Review Letters, 87 (27). ISSN 0031-9007

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Official URL: http://doi.org/10.1103/PhysRevLett.87.277902

Related URL: http://dx.doi.org/10.1103/PhysRevLett.87.277902

Abstract

More than two multipartite orthogonal states cannot always be discriminated (with certainty) if only local operations and classical communication (LOCC) are allowed. Using an existing inequality among the measures of entanglement, we show that any three Bell states cannot be discriminated by LOCC. Exploiting the inequality, we calculate the distillable entanglement of a certain class of (4\otimes 4) mixed states.

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