Dressed-atom multiphoton analysis of anomalous electromagnetically induced absorption
Quantum Physics
2015-05-19 v1 Atomic Physics
Abstract
A method to interpret probe spectra of driven degenerate atomic systems is discussed. The dressed-atom multiphoton spectroscopy (DAMS) is based on a dressing of the atomic system with the strong coupling field, followed by a perturbative treatment of the probe field interaction. As example, we apply the DAMS to provide a clear interpretation for anomalous electromagnetically induced absorption (EIA), which cannot be explained by spontaneous transfer of coherence. We show that anomalous EIA arises from quantum interference between competing two-photon transitions, and explain the different dependences on the coupling field strength observed for various angular momentum setups.
Cite
@article{arxiv.1007.2608,
title = {Dressed-atom multiphoton analysis of anomalous electromagnetically induced absorption},
author = {H. -S. Chou and J. Evers},
journal= {arXiv preprint arXiv:1007.2608},
year = {2015}
}