Global entanglement and coherent states in an N-partite system
Quantum Physics
2009-11-13 v1
Abstract
We consider a quantum system consisting of N parts, each of which is a "quKit" described by a K dimensional Hilbert space. We prove that in the symmetric subspace, S, a pure state is not globally entangled, if and only if it is a coherent state. It is also shown that in the orthogonal complement all states are globally entangled.
Cite
@article{arxiv.0810.1839,
title = {Global entanglement and coherent states in an N-partite system},
author = {P. Dömötör and M. G. Benedict},
journal= {arXiv preprint arXiv:0810.1839},
year = {2009}
}