Geometric global quantum discord
Quantum Physics
2015-06-05 v2
Abstract
Geometric quantum discord, proposed by Dakic, Vedral, and Brukner [Phys. Rev. Lett. 105 (2010) 190502], is an important measure for bipartite correlations. In this paper, we generalize it to multipartite states, we call the generalized version geometric global quantum discord (GGQD). We characterize GGQD in different ways, and provide some special states which allow analytical GGQD.
Keywords
Cite
@article{arxiv.1205.0330,
title = {Geometric global quantum discord},
author = {Jianwei Xu},
journal= {arXiv preprint arXiv:1205.0330},
year = {2015}
}
Comments
8 pages,no figure;added a lower bound for GGQD to version 1