Multipartite fully-nonlocal quantum states
Abstract
We present a general method to characterize the quantum correlations obtained after local measurements on multipartite systems. Sufficient conditions for a quantum system to be fully-nonlocal according to a given partition, as well as being (genuinely) multipartite fully-nonlocal, are derived. These conditions allow us to identify all completely-connected graph states as multipartite fully-nonlocal quantum states. Moreover, we show that this feature can also be observed in mixed states: the tensor product of five copies of the Smolin state, a biseparable and bound entangled state, is multipartite fully-nonlocal.
Cite
@article{arxiv.0911.3559,
title = {Multipartite fully-nonlocal quantum states},
author = {Mafalda L. Almeida and Daniel Cavalcanti and Valerio Scarani and Antonio Acin},
journal= {arXiv preprint arXiv:0911.3559},
year = {2015}
}
Comments
5 pages, 1 figure. Version published in PRA. Note that it does not contain all the results from the previous version; these will be included in a later, more general, paper