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Purity loss for a Cooper pair box interacting dispersively with a nonclassical field under phase damping |
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PP: 122-131 |
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Author(s) |
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A. El-Barakaty,
M. Darwish,
A.-S. F. Obada,
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Abstract |
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| A system of a Cooper pair box interacting with a field in the binomial state is considered
in the dispersive regime. The system is coupled to the environment through phase
damping. The effects of the different parameters on the purity of the states of the total
system and the subsystems are considered. It is found that damping does not affect the
state of the box. While it affects the state of the field and the total system. The initial
state of the box has the dominant effect on the heights of oscillations on both the field
and the box states. |
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