No-signaling, entanglement-breaking, and localizability in bipartite channels
Quantum Physics
2011-01-28 v2
Abstract
A bipartite quantum channel represents the interaction between systems, generally allowing for exchange of information. A special class of bipartite channels are the no-signaling ones, which do not allow communication. In Ref. [1] it has been conjectured that all no-signaling channels are mixtures of entanglement-breaking and localizable channels, which require only local operations and entanglement. Here we provide the general realization scheme, giving a counterexample to the conjecture.
Keywords
Cite
@article{arxiv.1007.1177,
title = {No-signaling, entanglement-breaking, and localizability in bipartite channels},
author = {Giacomo Mauro D'Ariano and Stefano Facchini and Paolo Perinotti},
journal= {arXiv preprint arXiv:1007.1177},
year = {2011}
}
Comments
4 pages, revtex4