Dissipation and entanglement dynamics for two interacting qubits coupled to independent reservoirs
Quantum Physics
2009-11-13 v1
Abstract
We derive the master equation of a system of two coupled qubits by taking into account their interaction with two independent bosonic baths. Important features of the dynamics are brought to light, such as the structure of the stationary state at general temperatures and the behaviour of the entanglement at zero temperature, showing the phenomena of sudden death and sudden birth as well as the presence of stationary entanglement for long times. The model here presented is quite versatile and can be of interest in the study of both Josephson junction architectures and cavity-QED.
Cite
@article{arxiv.0806.4852,
title = {Dissipation and entanglement dynamics for two interacting qubits coupled to independent reservoirs},
author = {Matteo Scala and Rosanna Migliore and Antonino Messina},
journal= {arXiv preprint arXiv:0806.4852},
year = {2009}
}
Comments
14 pages, 3 figures, submitted to Journal of Physics A: Mathematical and Theoretical