Field Purification in the intensity-dependent Jaynes-Cummings model

Abstract

We have found that, in the intensity-dependent Jaynes-Cummings model, a field initially prepared in a statistical mixture of two coherent states, $|\alpha >$ and $|-\alpha >$, evolves toward a pure state. We have also shown that an even-coherent state turns periodically a into rotated odd-coherent state during the evolution.

14 pages, RevTex, 3 figures, accepted for publication in Physics Letters A

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