Effects of atomic coherence on collapses and revivals in a coherent field

Peng Zhou, Zhi Lin Hu, Jin Sheng Peng

The influence of the atomic coherence on the collapses and revivals of the atomic inversion is some generalized Jaynes-Cummings models is examined. It is shown that the collapse and revival times are independent of the initial state of the atom, while the amplitude of the revivals is sensitive to this coherence and the phase of the field. Under certain conditions, the amplitude of the revivals can be decreased and the revivals can become the doublet structure.

Daniel F. Walls

Amitabh Joshi, Ravinder Rupchand Puri

The effects of the coherence between the states of a two-level atom on the phenomenon of collapses and revivals in an undamped binomial state of the electromagnetic field are investigated. It is found that the Rabi oscillations exhibit qualitatively different behaviour for different phases of coherence between the levels. This behaviour in the binomial state of the field is in contrast with that in a coherent state field, in which case the Rabi oscillations are qualitatively the same for all values of the coherence between the two atomic levels.

Mangesh Bhattarai

Yuri V. Rostovtsev, Treena Chatterjee

Xia Li

We investigate collapses and revivals of the light intensity with collective excitation of two-level atoms in a high-Q cavity. By using Secular approximation, we present the analytical expressions of the light intensity for the cases of the excitonic number state and the coherent state. In our results, it is shown that the effective exciton-exciton interaction results in the appearance of collapse and revival of the light intensity. The revival time is strongly depended on the atomic number, the detuning, the atomic transition frequency and the atom-field coupling constants.