Non-equilibrium entanglement in a driven Dicke model
Mesoscale and Nanoscale Physics
2009-06-30 v1 Other Condensed Matter
Abstract
We study the entanglement dynamics in the externally-driven single-mode Dicke model in the thermodynamic limit, when the field is in resonance with the atoms. We compute the correlations in the atoms-field ground state by means of the density operator that represents the pure state of the universe and the reduced density operator for the atoms, which results from taking the partial trace over the field coordinates. As a measure of bipartite entanglement, we calculate the linear entropy, from which we analyze the entanglement dynamics. In particular, we found a strong relation between the stability of the dynamical parameters and the reported entanglement.
Cite
@article{arxiv.0904.2411,
title = {Non-equilibrium entanglement in a driven Dicke model},
author = {Victor M. Bastidas and John H. Reina and Tobias Brandes},
journal= {arXiv preprint arXiv:0904.2411},
year = {2009}
}
Comments
Contribution to the SLAFES XIX. This version to appear in J. Phys.: Conference Series