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Entanglement and its operational measure

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Journal of Russian Laser Research Aims and scope

Abstract

An operational representation of concurrence measuring the entanglement of bipartite systems by means of averages of basic observables is discussed. We prove the validity of this representation for bipartite systems with any dimension of a single-party Hilbert space. We show that Wigner-Yanase “skew” information gives a reasonable estimation of the amount of entanglement (in ebits) carried by mixed two-qubit states

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Authors and Affiliations

  1. Faculty of Science, Bilkent University, Bilkent, Ankara, 06800, Turkey

    Alexander A. Klyachko, Bariş Öztop & Alexander S. Shumovsky

Authors
  1. Alexander A. Klyachko
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  2. Bariş Öztop
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  3. Alexander S. Shumovsky
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Dedicated to the memory of Andrey Vinogradov.

Manuscript submitted by the authors in English on April 12, 2006.

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Klyachko, A.A., Öztop, B. & Shumovsky, A.S. Entanglement and its operational measure. J Russ Laser Res 27, 389–402 (2006). https://doi.org/10.1007/s10946-006-0021-0

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