Repeated output coupling of ultracold Feshbach molecules from a Cs BEC

Köppinger, M.P.; Gregory, P.D.; Jenkin, D.L.; McCarron, D.J.; Marchant, A.L.; Cornish, S.L.

doi:10.1088/1367-2630/16/11/115016

Repeated output coupling of ultracold Feshbach molecules from a Cs BEC

Köppinger, M.P.; Gregory, P.D.; Jenkin, D.L.; McCarron, D.J.; Marchant, A.L.; Cornish, S.L.

Authors

M.P. Köppinger

P.D. Gregory

D.L. Jenkin

D.J. McCarron

A.L. Marchant

Professor Simon Cornish s.l.cornish@durham.ac.uk
Professor

Abstract

Paper Part of Focus on New Frontiers of Cold Molecules Research We investigate magnetoassociation of ultracold Feshbach molecules from a Bose-Einstein condensate of Cs atoms and explore the spectrum of weakly bound molecular states close to the atomic threshold. By exploiting the variation of magnetic field experienced by a molecular cloud falling in the presence of a magnetic field gradient, we demonstrate the repeated output coupling of molecules from a single atomic cloud using a Feshbach resonance at 19.89 G. Using this method we are able to produce up to 24 separate pulses of molecules from a single atomic condensate, with a molecular pulse created every 7.2 ms. Furthermore, by careful control of the magnetic bias field and gradient we are able to utilise an avoided crossing in the bound state spectrum at 13.3 G to demonstrate exquisite control over the dynamics of the molecular clouds.

Citation

Köppinger, M., Gregory, P., Jenkin, D., McCarron, D., Marchant, A., & Cornish, S. (2014). Repeated output coupling of ultracold Feshbach molecules from a Cs BEC. New Journal of Physics, 16(11), Article 115016. https://doi.org/10.1088/1367-2630/16/11/115016

Journal Article Type	Article
Publication Date	Nov 24, 2014
Deposit Date	Sep 5, 2014
Publicly Available Date	Dec 2, 2014
Journal	New Journal of Physics
Publisher	IOP Publishing
Peer Reviewed	Peer Reviewed
Volume	16
Issue	11
Article Number	115016
DOI	https://doi.org/10.1088/1367-2630/16/11/115016

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