Three-tangle for mixtures of generalized GHZ and generalized W states
Quantum Physics
2009-01-06 v1
Abstract
We give a complete solution for the three-tangle of mixed three-qubit states composed of a generalized GHZ state, a|000>+b|111>, and a generalized W state, c|001>+d|010>+f|100>. Using the methods introduced by Lohmayer et al. 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.
Keywords
Cite
@article{arxiv.0711.4477,
title = {Three-tangle for mixtures of generalized GHZ and generalized W states},
author = {Christopher Eltschka and Andreas Osterloh and Jens Siewert and Armin Uhlmann},
journal= {arXiv preprint arXiv:0711.4477},
year = {2009}
}