Roughness suppression via rapid current modulation on an atom chip
Quantum Physics
2007-06-20 v2 Other Condensed Matter
Abstract
We present a method to suppress the potential roughness of a wire-based, magnetic atom guide: modulating the wire current at a few tens of kHz, the potential roughness, which is proportional to the wire current, averages to zero. Using ultra-cold clouds, we show experimentally that modulation reduces the roughness by at least of a factor five without measurable heating or atom loss. This roughness suppression results in a dramatic reduction of the damping of center of mass oscillations.
Cite
@article{arxiv.quant-ph/0701207,
title = {Roughness suppression via rapid current modulation on an atom chip},
author = {Jean-Baptiste Trebbia and Carlos Leonardo Garrido Alzar and Ronald Cornelussen and Christoph I. Westbrook and Isabelle Bouchoule},
journal= {arXiv preprint arXiv:quant-ph/0701207},
year = {2007}
}