Effect of atomic state coherence on three-level dynamics

David A. Cardimona, M. P. Sharma, María Alejandra Gómez Ortega

For a three-level atom with two excited states each dipole-coupled to a common ground state, the authors have found a particular linear combination of the atomic states which will not experience Rabi oscillations and their associated collapses and revivals. If the atom is initially prepared in this combination state, the atomic population will be coherently trapped there, and the dynamical behaviour will be constant in time.

Amitabh Joshi, Wenge Yang, Min Xiao

Luis Roa, A. Krügel

Olga A. Kocharovskaya, Yevgeny V. Radeonychev, Paul Mandel +1 more

We describe the physical effects emerging in three-level atoms as a result of a drastic modification of the relaxation processes under the action of a strong coherent field when one of two dynamic Stark levels crosses a nearby atomic state.

V�ronique Bommier

Ali Mahdifar, Marzie Jamshidi Farsani, M. Bagheri Harouni

In this paper, we consider the interaction of the nonlinear coherent states (CSs) on a sphere with a three-level atom. Since these generalized CSs depend on the curvature of the sphere, this model enables us to investigate the curvature effects of the physical space. By using the time-dependent state of the atom-field system, we first study the curvature effects on the occupation probabilities of the atomic levels. We especially study the relation between the revival time of the atomic occupation probabilities and the curvature. Then, to study the curvature effects on the dynamical properties of the cavity field, we consider photon distributions, correlation functions, and Mandel parameters of the field. The cavity field in this atom-field system exhibits nonclassical features which depend on the curvature of the physical space.