Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence
Quantum Physics
2013-07-23 v2 Statistical Mechanics
Mathematical Physics
math.MP
Optics
Abstract
We show that the phenomenon of frozen discord, exhibited by specific classes of two-qubit states under local nondissipative decoherent evolutions, is a common feature of all known bona fide measures of general quantum correlations. All those measures, despite inducing typically inequivalent orderings on the set of nonclassically correlated states, return a constant value in the considered settings. Every communication protocol which relies on quantum correlations as resource will run with a performance completely unaffected by noise in the specified dynamical conditions. We provide a geometric interpretation of this
Keywords
Cite
@article{arxiv.1304.1163,
title = {Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence},
author = {Benjamin Aaronson and Rosario Lo Franco and Gerardo Adesso},
journal= {arXiv preprint arXiv:1304.1163},
year = {2013}
}
Comments
7 pages, 2 figures, 1 table; title changed to match published version