A quantum degenerate Bose-Fermi mixture of $^{41}$K and $^6$Li
Abstract
We report a new apparatus for the study of two-species quantum degenerate mixture of K and Li atoms. We develop and combine several advanced cooling techniques to achieve both large atom number and high phase space density of the two-species atom clouds. Furthermore, we build a high-efficiency two-species magnetic transport system to transfer atom clouds from the 3D magneto-optical-trap chamber to a full glass science chamber of extreme high vacuum environment and good optical access. We perform a forced radio-frequency evaporative cooling for K atoms while the Li atoms are sympathetically cooled in an optically-plugged magnetic trap. Finally, we achieve the simultaneous quantum degeneracy for the K and Li atoms. The Bose-Einstein condensate of K has 1.410 atoms with a condensate fraction of about 62%, while the degenerate Fermi gas of Li has a total atom number of 5.410 at 0.25 Fermi temperature.
Keywords
Cite
@article{arxiv.1702.08630,
title = {A quantum degenerate Bose-Fermi mixture of $^{41}$K and $^6$Li},
author = {Yu-Ping Wu and Xing-Can Yao and Hao-Ze Chen and Xiang-Pei Liu and Xiao-Qiong Wang and Yu-Ao Chen and Jian-Wei Pan},
journal= {arXiv preprint arXiv:1702.08630},
year = {2017}
}