A momentum filter for atomic gas
Atomic and Molecular Clusters
2015-06-16 v1 Quantum Gases
Quantum Physics
Abstract
We propose and demonstrate a momentum filter for atomic gas based on a designed Talbot-Lau interferometer. It consists in two identical optical standing wave pulses separated by a delay equal to odd multiples of the half Talbot time. The one dimensional momentum width along the long direction of a cigar shape condensate is rapidly and greatly purified to a minimum, which corresponds to the ground state energy of the confining trap in our experiment. We find good agreement between theoretical analysis and experimental results. The filter is also effective for non-condensed cold atoms and could be applied widely.
Cite
@article{arxiv.1306.3463,
title = {A momentum filter for atomic gas},
author = {Wei Xiong and Xiaoji Zhou and Xuguang Yue and Yueyang Zhai and Xuzong Chen},
journal= {arXiv preprint arXiv:1306.3463},
year = {2015}
}
Comments
9 pages, 6 figures, accepted by New Journal of Physics