Application of the geometric measure of entanglement to three-qubit mixed states

Details Application of the geometric measure of entanglement to three-qubit mixed states Application of the geometric measure of entanglement to three-qubit mixed states

2003-03-26

arxiv.org/abs/quant-ph/0303158v1

Physics

Quantum Physics

5 pages, 9 figures

Scientific paper

The geometric measure of entanglement, originated by Shimony and by Barnum and Linden, is determined for a family of tripartite mixed states consisting of aribitrary mixtures of GHZ, W, and inverted-W states. For this family of states, other measures of entanglement, such as entanglement of formation and relative entropy of entanglement, have not been determined. The results for the geometric measure of entanglement are compared with those for negativity, which are also determined. The results for the geometric measure of entanglement and the negativity provide examples of the determination of entanglement for nontrivial mixed multipartite states.

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