Effect of Squeezing on the Atomic and the Entanglement Dynamics in the Jaynes-Cummings Model

Details Effect of Squeezing on the Atomic and the Entanglement Dynamics in the Jaynes-Cummings Model Effect of Squeezing on the Atomic and the Entanglement Dynamics in the Jaynes-Cummings Model

2012-03-21

arxiv.org/abs/1203.4792v1

Physics

Quantum Physics

Scientific paper

The dynamics of the Jaynes-Cummings interaction of a two-level atom interacting with a single mode of the radiation field is investigated, as the state of the field is gradually changed from a coherent state to a squeezed coherent state. The effect of mild squeezing on the coherent light is shown to be striking: the photon number distribution gets localized and it peaks maximally for a particular value of squeezing. The atomic inversion retains its structure for a longer time. The mean linear entropy shows that the atom has a tendency to get disentangled from field within the collapse region and also in the revival region, for mild squeezing. These properties are absent for the case of a coherent state or for an excessively squeezed coherent state. We also elucidate a connection between these properties and the photon statistics of the mildly squeezed coherent state; these states have the minimum variance and are also maximally sub-Poissonian.

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