Mathey, L.
, Tiesinga, E.
, Julienne, P.
and Clark, C.
(2009),
Collisional cooling of ultra-cold atom ensembles using Feshbach resonances, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902264
(Accessed April 16, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Collisional cooling of ultra-cold atom ensembles using Feshbach resonances
Published
Author(s)
, , ,
Abstract
We propose a new type of cooling mechanism for ultra-cold fermionic atom ensembles, which capitalizes on the energy dependence of inelastic collisions in the presence of a Feshbach resonance. We first discuss the case of a single magnetic resonance, and find that the final temperature and the cooling rate is limited by the width of the resonance. A concrete example, based on a $p$-wave resonance of $^{40}$K, is given. We then improve upon this setup by using both a very sharp optical resonance and a very broad magnetic resonance and show that one can improve upon temperatures reached with current technologies.Citation
Physical Review Letters
Volume
80
Pub Type
Journals
Download Paper
Keywords
cooling, Feshbach resonance, scattering, ultra cold atoms
Citation
Created September 8, 2009, Updated February 19, 2017