Correlation of Dirac potentials and atomic inversion in cavity quantum electrodynamics

Controlling the time evolution of the population of two states in cavity quantum electrodynamics is necessary by tuning the modified Rabi frequency in which the extra classical effect of electromagnetic field is taken into account. The theoretical explanation underlying the perturbation of potential on spatial regime of bloch sphere is by the use of Bagrov-Baldiotti-Gitman-Shamshutdinova-Darboux transformations [Bagrov et al., Darboux transformation for two-level system, Ann. Phys. 14, 390 (2005)] on the electromagnetic field potential in one-dimensional stationary Dirac model in which the Pauli matrices are the central parameters for controlling the collapse and revival of the Rabi oscillations. It is shown that by choosing sigma(1) in the transformation generates the parabolic potential causing the total collapse of oscillations, while {sigma(2), sigma(3)} yield the harmonic oscillator potentials ensuring the coherence of qubits. (C) 2010 American Institute of Physics. [doi:10.1063/1.3458598]