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Physics Letters A

Generation of superpositions of coherent states of a cavity field with a driven atom (Physics Letters A 244 (1998) 512)

Shi-Biao Zheng, Guang‐Can Guo

Published Feb 1, 1999• 0 citations
Publisher
DOI
10.1016/s0375-9601(98)00916-5

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We consider the resonant interaction of a cavity mode with a two-level atom that is driven by a coherent field while it crosses the cavity. Starting from the cavity field in a coherent state, we show that the state of the system can reach the maximum entanglement after a unitary evolution for long enough interaction times. Also we illustrate how the generation of cavity field superposition states can allow, in the open system dynamics, the observation of their decoherence in atomic correlation measurements, for any initial cavity field state, and even under the combined effects of dissipation, thermal noise, and atomic pumping.