Controlling Excitation Inversion of a Cooper Pair Box Interacting with a Nanomechanical Resonator

We investigate the action of time-dependent detunings upon the excitation inversion of a Cooper pair box interacting with a nanomechanical resonator. The method employs the Jaynes-Cummings model with damping, assuming different decay rates of the Cooper pair box and various fixed and time-dependent...

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Bibliographic Details
Published in:Chinese physics letters 2012-08, Vol.29 (8), p.80303-1-080303-5
Main Authors: Valverde, C., de Oliveira, H. C. B., Avelar, A. T., Baseia, B.
Format: Article
Language:English
Subjects:
Constants
Cooper pairs
Damping
Excitation
Inversions
Nanostructure
Resonators
Time dependence
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Summary:We investigate the action of time-dependent detunings upon the excitation inversion of a Cooper pair box interacting with a nanomechanical resonator. The method employs the Jaynes-Cummings model with damping, assuming different decay rates of the Cooper pair box and various fixed and time-dependent detunings. It is shown that, when the presence of damping plus constant detunings destroys the collapse/revival effects, convenient choices of time-dependent detunings allow one to reconstruct, such events in a perfect war. It is also shown that the mean excitation of the nanomechanical resonator is more robust against damping of the Cooper pair box for convenient values of time-dependent detunings.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/29/8/080303