Spin noise spectroscopy under resonant optical probing conditions: coherent and non-linear effects
Quantum Physics
2012-06-08 v2 Atomic Physics
Abstract
High sensitivity Faraday rotation spectroscopy is used to measure the fluctuating magnetization noise of non-interacting rubidium atoms under resonant and non-resonant optical probing conditions. The spin noise frequency spectra in dependence on the probe light detuning with respect to the D2-transition reveals clear signatures of a coherent coupling of the participating electronic levels. The results are explained by extended Bloch equations including homogeneous and inhomogeneous broadening mechanisms. Our measurements further indicate that spin noise originating from excited states are governed at high intensities by collective effects.
Keywords
Cite
@article{arxiv.1108.0591,
title = {Spin noise spectroscopy under resonant optical probing conditions: coherent and non-linear effects},
author = {H. Horn and G. M. Müller and E. M. Rasel and L. Santos and J. Hübner and M. Oestreich},
journal= {arXiv preprint arXiv:1108.0591},
year = {2012}
}