Production of optically trapped 87RbCs Feshbach molecules

Köppinger, M. P.; McCarron, D. J.; Jenkin, D. L.; Molony, P. K.; Cho, H. W.; Cornish, S. L.; Le Sueur, C. R.; Blackley, C. L.; Hutson, J. M.

Abstract

We report the production of Feshbach molecules in a crossed-beam dipole trap. A mixture of and is cooled close to quantum degeneracy before an interspecies Feshbach resonance at 197 G is used to associate up to molecules with a temperature of nK. The molecules are confined in the dipole trap with a lifetime of 0.21(1) s, long enough for future experiments exploring optical transfer to the absolute ground state. We have measured the magnetic moment of the Feshbach molecules in a magnetic bias field range between 181 and 185 G to demonstrate the ability to control the character of the molecular state. In addition, we have performed Feshbach spectroscopy in a field range from 0 to 1200 G and located three previously unobserved resonances at high magnetic fields.

Citation

Köppinger, M. P., McCarron, D. J., Jenkin, D. L., Molony, P. K., Cho, H. W., Cornish, S. L., Le Sueur, C. R., Blackley, C. L., & Hutson, J. M. (2014). Production of optically trapped 87RbCs Feshbach molecules. Physical Review A - Atomic, Molecular, and Optical Physics, 89(3), Article 033604. https://doi.org/10.1103/physreva.89.033604

• Journal Article Type: Article
• Acceptance Date: Dec 12, 2013
• Online Publication Date: Mar 5, 2014
• Publication Date: Mar 5, 2014
• Deposit Date: Mar 20, 2014
• Publicly Available Date: Mar 25, 2014
• Journal: Physical review. A.
• Print ISSN: 1050-2947
• Electronic ISSN: 1094-1622
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 89
• Issue: 3
• Article Number: 033604
• DOI: https://doi.org/10.1103/physreva.89.033604
• Public URL: https://durham-repository.worktribe.com/output/1467871