Evaluation of two different entanglement measures on a bound entangled state
Quantum Physics
2010-07-28 v1
Abstract
We consider the mixed three-qubit bound entangled state defined as the normalized projector on the subspace that is complementary to an Unextendible Product Basis [C. H. Bennett et. al., Phys. Rev. Lett. 82, 5385 (1999)]. Using the fact that no product state lies in the support of that state, we compute its entanglement by providing a basis of its subspace formed by "minimally-entangled" states. The approach is in principle applicable to any entanglement measure; here we provide explicit values for both the geometric measure of entanglement and a generalized concurrence.
Keywords
Cite
@article{arxiv.1006.1152,
title = {Evaluation of two different entanglement measures on a bound entangled state},
author = {Cyril Branciard and Huangjun Zhu and Lin Chen and Valerio Scarani},
journal= {arXiv preprint arXiv:1006.1152},
year = {2010}
}
Comments
6 pages, 1 figure