Purification via entanglement swapping and conserved entanglement

S. Bose, V. Vedral, and P. L. Knight
Phys. Rev. A 60, 194 – Published 1 July 1999
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Abstract

We investigate the purification of entangled states by local actions using a variant of entanglement swapping. We show that there exists a measure of entanglement which is conserved in this type of purification procedure.

  • Received 7 December 1998

DOI:https://doi.org/10.1103/PhysRevA.60.194

©1999 American Physical Society

Authors & Affiliations

S. Bose1, V. Vedral2, and P. L. Knight1

  • 1Optics Section, The Blackett Laboratory, Imperial College, London SW7 2BZ, England
  • 2Centre for Quantum Computing, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, England

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Vol. 60, Iss. 1 — July 1999

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