Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State

Molony, Peter K.; Gregory, Philip D.; Ji, Zhonghua; Lu, Bo; Köppinger, Michael P.; Le Sueur, C. Ruth; Blackley, Caroline L.; Hutson, Jeremy M.; Cornish, Simon L.

doi:10.1103/physrevlett.113.255301

Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State

Molony, Peter K.; Gregory, Philip D.; Ji, Zhonghua; Lu, Bo; Köppinger, Michael P.; Le Sueur, C. Ruth; Blackley, Caroline L.; Hutson, Jeremy M.; Cornish, Simon L.

Authors

Peter K. Molony

Philip D. Gregory

Zhonghua Ji

Bo Lu

Michael P. Köppinger

C. Ruth Le Sueur

Caroline L. Blackley

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

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

Abstract

We report the creation of a sample of over 1000 ultracold Rb 87 Cs 133 molecules in the lowest rovibrational ground state, from an atomic mixture of Rb 87 and Cs 133 , by magnetoassociation on an interspecies Feshbach resonance followed by stimulated Raman adiabatic passage (STIRAP). We measure the binding energy of the RbCs molecule to be hc×3811.576(1) cm −1 and the |v '' =0,J '' =0⟩ to |v '' =0,J '' =2⟩ splitting to be h×2940.09(6) MHz . Stark spectroscopy of the rovibrational ground state yields an electric dipole moment of 1.225(3)(8) D, where the values in parentheses are the statistical and systematic uncertainties, respectively. We can access a space-fixed dipole moment of 0.355(2)(4) D, which is substantially higher than in previous work.

Citation

Molony, P. K., Gregory, P. D., Ji, Z., Lu, B., Köppinger, M. P., Le Sueur, C. R., …Cornish, S. L. (2014). Creation of Ultracold 87Rb133Cs Molecules in the Rovibrational Ground State. Physical Review Letters, 113(25), Article 255301. https://doi.org/10.1103/physrevlett.113.255301

Journal Article Type	Article
Acceptance Date	Nov 12, 2014
Online Publication Date	Dec 17, 2014
Publication Date	Dec 17, 2014
Deposit Date	Feb 4, 2015
Publicly Available Date	Apr 2, 2015
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	113
Issue	25
Article Number	255301
DOI	https://doi.org/10.1103/physrevlett.113.255301

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