Bell-type inequalities to detect true n-body non-separability
Quantum Physics
2009-11-07 v2
Abstract
We analyze the structure of correlations among more than two quantum systems. We introduce a classification of correlations based on the concept of non-separability, which is different {\em a priori} from the concept of entanglement. Generalizing a result of Svetlichny [Phys. Rev. D {\bf 35} (1987) 3066] on 3-particle correlations, we find an inequality for -particle correlations that holds under the most general separability condition and that is violated by some quantum-mechanical states.
Cite
@article{arxiv.quant-ph/0201058,
title = {Bell-type inequalities to detect true n-body non-separability},
author = {Daniel Collins and Nicolas Gisin and Sandu Popescu and David Roberts and Valerio Scarani},
journal= {arXiv preprint arXiv:quant-ph/0201058},
year = {2009}
}
Comments
4 pages, no figures, minor revisions