Sudden transition between classical and quantum decoherence
Quantum Physics
2015-05-18 v3
Abstract
We study the dynamics of quantum and classical correlations in the presence of nondissipative decoherence. We discover a class of initial states for which the quantum correlations, quantified by the quantum discord, are not destroyed by decoherence for times t < \bar{t}. In this initial time interval classical correlations decay. For t > \bar{t}, on the other hand, classical correlations do not change in time and only quantum correlations are lost due to the interaction with the environment. Therefore, at the transition time \bar{t} the open system dynamics exhibits a sudden transition from classical to quantum decoherence regime.
Cite
@article{arxiv.1001.5441,
title = {Sudden transition between classical and quantum decoherence},
author = {L. Mazzola and J. Piilo and S. Maniscalco},
journal= {arXiv preprint arXiv:1001.5441},
year = {2015}
}
Comments
version accepted for publication by Physical Review Letters