Robustness of quantum correlations against decoherence
Quantum Physics
2012-02-01 v2
Abstract
We study dynamics of nonclassical correlations by exactly solving a model consisting of two atomic qubits with spontaneous emission. We find that the nonclassical correlations defined by different measures give different qualitative characterizations of those correlations. The relative behaviors of those correlation measures are presented explicitly for various quantum states in the two-qubit atomic system. In particular, we find that the robustness of quantum correlations can be greatly enhanced by performing appropriate local unitary operations on the initial state of the system.
Cite
@article{arxiv.1111.2646,
title = {Robustness of quantum correlations against decoherence},
author = {Ming-Liang Hu and Heng Fan},
journal= {arXiv preprint arXiv:1111.2646},
year = {2012}
}
Comments
7 pages, 6 figures