A lower bound of concurrence for multipartite quantum states
Quantum Physics
2009-11-13 v1
Abstract
We study the concurrence of arbitrary multipartite mixed quantum states. An explicit lower bound of the concurrence is derived, which detects quantum entanglement of some states better than some separability criteria, and gives sufficient conditions for distilling GHZ states from tripartite states. An interesting relations between the lower bound of the concurrence for bipartite states and for tripartite states has been presented.
Keywords
Cite
@article{arxiv.0903.3145,
title = {A lower bound of concurrence for multipartite quantum states},
author = {Ming Li and Shao-Ming Fei and Zhi-XiWang},
journal= {arXiv preprint arXiv:0903.3145},
year = {2009}
}
Comments
8 pages,no figure