Nonlocality of Symmetric States
Quantum Physics
2012-05-28 v2
Abstract
In this paper we study the non-local properties of permutation symmetric states of n-qubits. We extend the bipartite Hardy paradox and the associated CH-inequality to n-party permutation symmetric states to show that all symmetric states exhibit non-locality. Natural extensions of both the paradoxes and the inequalities are developed which relate different entanglement classes to different non-local features. We define inequalities which are violated by all states of one entanglement class, whereas there are states outside that class which do not violate.
Cite
@article{arxiv.1112.3695,
title = {Nonlocality of Symmetric States},
author = {Zizhu Wang and Damian Markham},
journal= {arXiv preprint arXiv:1112.3695},
year = {2012}
}
Comments
4 pages of main text + 5 pages of proofs. 1 figure