Genuine quantum and classical correlations in multipartite systems
Quantum Physics
2011-11-04 v2
Abstract
Generalizing the quantifiers used to classify correlations in bipartite systems, we define genuine total, quantum, and classical correlations in multipartite systems. The measure we give is based on the use of relative entropy to quantify the "distance" between two density matrices. Moreover, we show that, for pure states of three qubits, both quantum and classical bipartite correlations obey a ladder ordering law fixed by two-body mutual informations, or, equivalently, by one-qubit entropies.
Cite
@article{arxiv.1108.0434,
title = {Genuine quantum and classical correlations in multipartite systems},
author = {Gian Luca Giorgi and Bruno Bellomo and Fernando Galve and Roberta Zambrini},
journal= {arXiv preprint arXiv:1108.0434},
year = {2011}
}
Comments
Accepted for publication in Phys. Rev. Lett