Complete Set of Operational Measures for the Characterization of Three-Qubit Entanglement

J. I. de Vicente, T. Carle, C. Streitberger, and B. Kraus
Phys. Rev. Lett. 108, 060501 – Published 8 February 2012
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Abstract

We characterize the entanglement contained in a pure three-qubit state via operational entanglement measures. To this end, we derive a new decomposition for arbitrary three-qubit states which is characterized by five parameters (up to local unitary operations). We show that these parameters are uniquely determined by bipartite entanglement measures. These quantities measure the entanglement required to generate the state following a particular preparation procedure and have a clear physical meaning. Moreover, we show that the classification of states obtained in this way is strongly related to the one obtained when considering general local operations and classical communication.

  • Figure
  • Received 30 June 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.060501

© 2012 American Physical Society

Authors & Affiliations

J. I. de Vicente, T. Carle, C. Streitberger, and B. Kraus

  • Institut für Theoretische Physik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria

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Issue

Vol. 108, Iss. 6 — 10 February 2012

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