Quantum Discord: A Dynamic Approach in Geometric Picture
Quantum Physics
2011-07-25 v1
Abstract
We present a dynamic approach to study the quantum discord and classical correlation. By local filtering operation, the evaluation of quantum discord is closely related to quantum channel and channel capacity. As a consequence, the traditional optimization over horizontal-or-vertical von Neumann measurements is replaced by that over horizontal-and-vertical three-element POVM measurement, from which more rigorous results of quantum discord are obtained.
Cite
@article{arxiv.1107.4457,
title = {Quantum Discord: A Dynamic Approach in Geometric Picture},
author = {Mingjun Shi and Fengjian Jiang and Jiangfeng Du},
journal= {arXiv preprint arXiv:1107.4457},
year = {2011}
}
Comments
4 pages, 3 figures