Quantum discord of X-states as optimization of one variable function
Quantum Physics
2016-08-31 v2
Abstract
We solve the quantum discord completely as an optimization of certain one variable function for arbitrary two qubit X state. Exact solutions of the quantum discord are obtained for several nontrivial regions of the five parametric space for the quantum state. Exceptional solutions are determined via an iterative algorithm.
Cite
@article{arxiv.1604.00124,
title = {Quantum discord of X-states as optimization of one variable function},
author = {Naihuan Jing and Bing Yu},
journal= {arXiv preprint arXiv:1604.00124},
year = {2016}
}
Comments
17 pages. Revised version with New title, and more references are added