All entangled states are useful for channel discrimination

Piani, Marco and Watrous, John (2009) All entangled states are useful for channel discrimination. Physical Review Letters, 102 (25). 250501. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.102.250501)

Abstract

We prove that every entangled state is useful as a resource for the problem of minimum-error channel discrimination. More specifically, given a single copy of an arbitrary bipartite entangled state, it holds that there is an instance of a quantum channel discrimination task for which this state allows for a correct discrimination with strictly higher probability than every separable state.

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• Item metadata

  Item type:	Article
  ID code:	49263
  Dates:	Date Event 26 June 2009 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	17 Sep 2014 04:04
  Last modified:	19 Apr 2024 14:38
  Related URLs:	Journal or Publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/49263