Eltschka, C and Osterloh, A and Siewert, Jens and Uhlmann, A (2008) Three-tangle for mixtures of generalized GHZ and generalized W states. New Journal of Physics 10, 043014.
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We give a complete solution for the three-tangle of mixed three-qubit states composed of a generalized Greenberger Horne Zeilinger (GHZ) state, |000+|111, and a generalized W state, |001+|010+|100. Using the methods introduced by Lohmayer (2006 260502), we provide explicit expressions for the mixed-state three-tangle and the corresponding optimal decompositions for this more general case. Moreover, as a special case, we obtain a general solution for a family of states consisting of a generalized GHZ state and an orthogonal product state.
|Institutions:||Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter|
|Projects:||SFB 631: Festkörperbasierte Quanteninformationsverarbeitung|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||25 May 2009 13:22|
|Last Modified:||05 Aug 2009 13:58|