A qualitative perspective on the dynamics of a single-Cooper-pair box with a phase-damped cavity
Quantum Physics
2008-05-03 v2
Abstract
In a recent paper Dajka, et.al., [J. Phys. A \textbf{40}, F879 (2007)] predicted that some composite systems can be entangled forever even if coupled with a thermal bath. We analyze the transient entanglement of a single-Cooper-pair box biased by a classical voltage and irradiated by a quantized field and find the unusual feature that the phase-damped cavity can lead to a long-lived entanglement. The results show an asymptotic value of the idempotency defect (concurrence) which embodies coherence loss (entanglement survival), independent of the interaction development by dependent critically on environment.
Keywords
Cite
@article{arxiv.0801.2905,
title = {A qualitative perspective on the dynamics of a single-Cooper-pair box with a phase-damped cavity},
author = {Mahmoud Abdel-Aty},
journal= {arXiv preprint arXiv:0801.2905},
year = {2008}
}
Comments
15 pages, 4 figures, some modifications have been done