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The European Physical Journal D

, Volume 48, Issue 3, pp 435–442 | Cite as

A classification of entanglement in three-qubit systems

  • C. SabínEmail author
  • G. García-Alcaine
Quantum Optics and Quantum Information

Abstract.

We present a classification of three-qubit states based in their three-qubit and reduced two-qubit entanglements. For pure states these criteria can be easily implemented, and the different types can be related with sets of equivalence classes under local unitary operations. For mixed states characterization of full tripartite entanglement is not yet solved in general; some partial results will be presented here.

PACS.

03.65.Ud Entanglement and quantum nonlocality 03.67.Mn Entanglement production, characterization, and manipulation 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.Instituto de Matemáticas y Física FundamentalMadridSpain
  2. 2.Departamento de Física Teórica IUniversidad Complutense de Madrid, Ciudad UniversitariaMadridSpain

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