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 October 4, 2024)
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Collisional cooling of ultra-cold atom ensembles using Feshbach resonances
Published
Author(s)
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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
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Keywords
cooling, Feshbach resonance, scattering, ultra cold atoms
Citation
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Created September 8, 2009, Updated February 19, 2017