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 ... إقراء المزيد

This article provides a convenient framework for a quantitative evaluation of the transient entropy squeezing generated when a single-Cooper-pair box irradiated by a classical field taking into account a phase-damped cavity. It explores how the entropy squeezing factors influenced by phase-damped cavity. The numerical results reveal an interesting connection between entropy squeezing and entanglement dynamics. إقراء المزيد