Entanglement classes of symmetric Werner states

David W. Lyons and Scott N. Walck
Phys. Rev. A 84, 042316 – Published 10 October 2011

Abstract

The symmetric Werner states for n qubits, important in the study of quantum nonlocality and useful for applications in quantum information, have a surprisingly simple and elegant structure in terms of tensor products of Pauli matrices. Further, each of these states forms a unique local unitary equivalence class, that is, no two of these states are interconvertible by local unitary operations.

  • Received 27 June 2011

DOI:https://doi.org/10.1103/PhysRevA.84.042316

©2011 American Physical Society

Authors & Affiliations

David W. Lyons* and Scott N. Walck

  • Lebanon Valley College, Annville, Pennsylvania 17003, USA

  • *lyons@lvc.edu
  • walck@lvc.edu

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Issue

Vol. 84, Iss. 4 — October 2011

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