Phases of the electronic two-level model under the rotating wave approximation
Quantum Physics
2010-04-26 v1 Computational Physics
Abstract
We present the time evolution of the electronic two-level model in the rotating wave approximation (RWA). We calculate the Aharonov-Anandan phase of the vector states with cyclic evolution either within the period of an external monochromatic electric field or the period corresponding to Rabi's frequency. The Aharonov-Anandan phase is shown to be dependent on the initial vector state, unless the system evolves in the adiabatic regime; in the latter case, the Aharonov-Anandan phase recovers Berry's phase. Our results are also discussed in the quasi-resonant regime.
Cite
@article{arxiv.1004.4008,
title = {Phases of the electronic two-level model under the rotating wave approximation},
author = {M. T. Thomaz and A. C. Aguiar Pinto and M. Moutinho},
journal= {arXiv preprint arXiv:1004.4008},
year = {2010}
}
Comments
18 pages, no figures