Observation of Feshbach resonances between alkali and closed-shell atoms

Barbé, V.; Ciamei, A.; Pasquiou, B.; Reichsöllner, L.; Schreck, F.; Żuchowski, P.S.; Hutson, J.M.

doi:10.1038/s41567-018-0169-x

Observation of Feshbach resonances between alkali and closed-shell atoms

Barbé, V.; Ciamei, A.; Pasquiou, B.; Reichsöllner, L.; Schreck, F.; Żuchowski, P.S.; Hutson, J.M.

Authors

V. Barbé

A. Ciamei

B. Pasquiou

L. Reichsöllner

F. Schreck

P.S. Żuchowski

Professor Jeremy Hutson j.m.hutson@durham.ac.uk
Professor

Abstract

Magnetic Feshbach resonances allow control of the interactions between ultracold atoms1. They are an invaluable tool in studies of few-body and many-body physics2,3, and can be used to convert pairs of atoms into molecules4,5 by ramping an applied magnetic field across a resonance. Molecules formed from pairs of alkali atoms have been transferred to low-lying states, producing dipolar quantum gases6. There is great interest in making molecules formed from an alkali atom and a closed-shell atom such as ground-state Sr or Yb. Such molecules have both a strong electric dipole and an electron spin; they will open up new possibilities for designing quantum many-body systems7,8, and for tests of fundamental symmetries9. The crucial first step is to observe Feshbach resonances in the corresponding atomic mixtures. Very narrow resonances have been predicted theoretically10,11,12, but until now have eluded observation. Here we present the observation of magnetic Feshbach resonances of this type, for an alkali atom, Rb, interacting with ground-state Sr.

Citation

Barbé, V., Ciamei, A., Pasquiou, B., Reichsöllner, L., Schreck, F., Żuchowski, P., & Hutson, J. (2018). Observation of Feshbach resonances between alkali and closed-shell atoms. Nature Physics, 14, 881-884. https://doi.org/10.1038/s41567-018-0169-x

Journal Article Type	Article
Acceptance Date	May 9, 2018
Online Publication Date	Jun 11, 2018
Publication Date	Jun 11, 2018
Deposit Date	May 21, 2018
Publicly Available Date	Dec 11, 2018
Journal	Nature Physics
Print ISSN	1745-2473
Electronic ISSN	1745-2481
Publisher	Nature Research
Peer Reviewed	Peer Reviewed
Volume	14
Pages	881-884
DOI	https://doi.org/10.1038/s41567-018-0169-x
Related Public URLs	https://arxiv.org/abs/1710.03093