We investigate the dynamics of a tri-beam laser interacting with a closed three-level atomic system. The Bloch equations are obtained using Hesinberg’s equation of motion. The impact of the resulting parameters on the atomic occupation probabilities and information entropy is discussed. It is shown that the populations are affected by the detuning in different ways which are then compared in ... Read more

We study the field entropy squeezing as a measure of the entanglement in a three-level system interacting with a cavity field. Numerical calculations under current experimental conditions are performed and it is found that the initial state setting and atom-field coupling present changes of the general features of the field entropy squeezing dramatically Read more

In this paper a novel analytical method is applied to the problem of investigating the fidelity and linear entropy of a three-level system in the presence of a photonic band gap. Using this analytic solution, we conclusively calculate the fidelity and linear entropy, related particularly to the entanglement phenomena. We demonstrate how fluctuations in the fidelity and linear entropy are ... Read more