Transformations of W-type entangled states

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Kintas S., Turgut S.

JOURNAL OF MATHEMATICAL PHYSICS, vol.51, no.9, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51 Issue: 9
  • Publication Date: 2010
  • Doi Number: 10.1063/1.3481573
  • Journal Name: JOURNAL OF MATHEMATICAL PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: information theory, quantum entanglement, DISTILLATION
  • Middle East Technical University Affiliated: Yes

Abstract

The transformations of W-type entangled states by using local operations assisted with classical communication are investigated. For this purpose, a parametrization of the W-type states which remains invariant under local unitary transformations is proposed and a complete characterization of the local operations carried out by a single party is given. These are used for deriving the necessary and sufficient conditions for deterministic transformations. A convenient upper bound for the maximum probability of distillation of arbitrary target states is also found. (C) 2010 American Institute of Physics. [doi:10.1063/1.3481573]