Introducing Quantum Discord
量子物理
2013-05-29 v3
摘要
Two classically identical expressions for the mutual information generally differ when the two systems involved are quantum. We investigate this difference -- quantum discord -- and show that it can be used as a criterion for the classicality of the correlations. We also show that quantum discord can be used for describing the selection of the preferred, effectively classical, pointer states.
引用
@article{arxiv.quant-ph/0105072,
title = {Introducing Quantum Discord},
author = {Harold Ollivier and Wojciech H. Zurek},
journal= {arXiv preprint arXiv:quant-ph/0105072},
year = {2013}
}
备注
4 pages, 2 figures, accepted for publication in Phys. Rev. Lett