Nonlinear Spectroscopic Effects in Quantum Gases Induced by Atom-Atom Interactions
Abstract
We consider nonlinear spectroscopic effects - interaction-enhanced double resonance and spectrum instability - that appear in ultracold quantum gases owing to collisional frequency shift of atomic transitions and, consequently, due to the dependence of the frequencies on the population of various internal states of the particles. Special emphasis is put to two simplest cases, (a) the gas of two-level atoms and (b) double resonance in a gas of three-level bosons, in which the probe transition frequency remains constant.
Cite
@article{arxiv.1301.1766,
title = {Nonlinear Spectroscopic Effects in Quantum Gases Induced by Atom-Atom Interactions},
author = {Alexander Safonov and Irina Safonova and Igor Yasnikov},
journal= {arXiv preprint arXiv:1301.1766},
year = {2015}
}
Comments
7 pages, 4 figures; Proceedings of the XXXVI Conference on Low Temperature Physics NT-36 (in Russian), July 2-6, 2012, Ioffee Physicotechnical Institute, St. Petersburg, Russia; accepted for publication in JETP. This paper draws partly from arXiv:1101.2559