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Distinguishability of the Bell states

Sibasish Ghosh·Guruprasad Kar·Anirban Roy·Aditi Sen De·Ujjwal Sen
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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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Sibasish Ghosh, Guruprasad Kar, Anirban Roy, Aditi Sen De, Ujjwal Sen. 2001-07-03. Distinguishability of the Bell states. https://doi.org/10.1103/physrevlett.87.277902

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