Coherent states and global entanglement in an N qubit system
Quantum Physics
2009-11-13 v2
Abstract
We consider an qubit system and show that in the symmetric subspace, a state is not globally entangled, iff it is a coherent state. It is also proven that in the orthogonal complement all states are globally entangled.
Cite
@article{arxiv.0709.3728,
title = {Coherent states and global entanglement in an N qubit system},
author = {Piroska Dömötör and Mihály G. Benedict},
journal= {arXiv preprint arXiv:0709.3728},
year = {2009}
}