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Three-tangle for mixtures of generalized GHZ and generalized W states

Eltschka, C ; Osterloh, A ; Siewert, Jens ; Uhlmann, A


We give a complete solution for the three-tangle of mixed three-qubit states composed of a generalized Greenberger Horne Zeilinger (GHZ) state, {\it a}|000\rangle+{\it b}|111\rangle, and a generalized W state, {\it c}|001\rangle+{\it d}|010\rangle+{\it f}|100\rangle. Using the methods introduced by Lohmayer {\it et al} (2006 {\it Phys. Rev. Lett.} {\bf 97} 260502), we provide explicit expressions ...


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