Optoelectrical cooling of polar molecules to sub-millikelvin temperatures
Atomic Physics
2016-02-19 v2 Chemical Physics
Quantum Physics
Abstract
We demonstrate direct cooling of gaseous formaldehyde (H2CO) to the microkelvin regime. Our approach, optoelectrical Sisyphus cooling, provides a simple dissipative cooling method applicable to electrically trapped dipolar molecules. By reducing the temperature by three orders of magnitude and increasing the phase-space density by a factor of ~ we generate an ensemble of molecules with a temperature of about 420\mu K, populating a single rotational state with more than 80% purity.
Keywords
Cite
@article{arxiv.1511.09427,
title = {Optoelectrical cooling of polar molecules to sub-millikelvin temperatures},
author = {Alexander Prehn and Martin Ibrügger and Rosa Glöckner and Gerhard Rempe and Martin Zeppenfeld},
journal= {arXiv preprint arXiv:1511.09427},
year = {2016}
}