Coherent Backscattering with Nonlinear Atomic Scatterers
Mesoscale and Nanoscale Physics
2007-05-23 v1 Disordered Systems and Neural Networks
Quantum Physics
Abstract
We study coherent backscattering of a quasi-monochromatic laser by a dilute gas of cold two-level atoms. We consider the perturbative regime of weak intensities, where nonlinear effects arise from {\em inelastic} two-photon scattering processes. Here, coherent backscattering can be formed by interference between {\em three} different scattering amplitudes. Consequently, if elastically scattered photons are filtered out from the photodetection signal by means of suitable frequency-selective detection, we find the nonlinear backscattering enhancement factor to exceed the linear barrier two.
Cite
@article{arxiv.cond-mat/0411555,
title = {Coherent Backscattering with Nonlinear Atomic Scatterers},
author = {T. Wellens and B. Gremaud and D. Delande and C. Miniatura},
journal= {arXiv preprint arXiv:cond-mat/0411555},
year = {2007}
}
Comments
4 pages, 3 figures