Quantum correlation measure in arbitrary bipartite systems
Quantum Physics
2015-06-17 v2
Abstract
A definition of quantum correlation is presented for an arbitrary bipartite quantum state based on the skew information. This definition not only inherits the good properties of skew information such as the contractivity and so on, but also is effective and almost analytically calculated for any bipartite quantum states. We also reveal the relation between our measure and quantum metrology. As applications, we give the exact expressions of quantum correlation for many states, which provides a direct support for our result.
Cite
@article{arxiv.1309.0935,
title = {Quantum correlation measure in arbitrary bipartite systems},
author = {Chang-shui Yu and Shao-xiong Wu and Xiao-guang Wang and X. X. Yi and He-shan Song},
journal= {arXiv preprint arXiv:1309.0935},
year = {2015}
}
Comments
6 pages, 2 figures. Comments are welcome