Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
Abstract
We provide a general framework to describe cooling of a micromechanical oscillator to its quantum ground state by means of radiation-pressure coupling with a driven optical cavity. We apply it to two experimentally realized schemes, back-action cooling via a detuned cavity and cold-damping quantum-feedback cooling, and we determine the ultimate quantum limits of both schemes for the full parameter range of a stable cavity. While both allow to reach the oscillator's quantum ground state, we find that back-action cooling is more efficient in the good cavity limit, i.e. when the cavity bandwidth is smaller than the mechanical frequency, while cold damping is more suitable for the bad cavity limit. The results of previous treatments are recovered as limiting cases of specific parameter regimes.
Keywords
Cite
@article{arxiv.0705.1728,
title = {Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes},
author = {Claudiu Genes and David Vitali and Paolo Tombesi and Sylvain Gigan and Markus Aspelmeyer},
journal= {arXiv preprint arXiv:0705.1728},
year = {2009}
}
Comments
10 pages, 4 figures. Erratum of the published version included