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Distinguishability of the Bell states

Sibasish Ghosh, Guruprasad Kar, Anirban Roy, Aditi Sen De, Ujjwal Sen

Published 2001-06-26, updated 2001-07-03Version 2

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.

Comments: 3 Pages Latex, references added, minor changes
Categories: quant-ph
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