Circulant states with vanishing quantum discord
Quantum Physics
2013-05-06 v1
Abstract
We analyze a class of 2-qudit circulant states. They define generalization of well known 2-qubit X-states. We formula the necessary and sufficient criteria for vanishing quantum discord. We illustrate our analysis by an important subclass of circulant states -- so called Bell diagonal states.
Cite
@article{arxiv.1104.1804,
title = {Circulant states with vanishing quantum discord},
author = {Bogna Bylicka and Dariusz Chruściński},
journal= {arXiv preprint arXiv:1104.1804},
year = {2013}
}
Comments
8 pages