Atom-field entanglement in two-atom model with degenerate two-photon Raman transitions
Rodion K. Zakharov, Ali Othman, Eugene K. Bashkirov; Samara University, Samara, Russia
Abstract
The exact dynamics of a model consisting of two two-level atoms interacting with a mode of the electromagnetic field of an ideal resonator via degenerate two-photon Raman transitions is found for coherent states of the resonator field. The exact solution is used to calculate the probability of detecting atoms in an excited state and the atom-feld entanglement criterion -the linear atomic entropy for separable, entangled Bell-type states, and coherent initial states of atoms. The times for complete disentanglement of the atomic and field states are found for various initial atomic states. The time intervals for which entanglement between the atomic and resonator field states occurs are determined. It is shown that the maximum degree of entanglement between atoms and the resonator field is achieved for separable
states of nonideal atoms.
Speaker
Rodion K. Zakharov
Samara University
Russia
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