Creating Feshbach resonances for ultracold molecule formation with radio-frequency fields

Owens, D.J.; Xie, T; Hutson, J.M.

Abstract

We show that radio-frequency (rf) radiation may be used to create Feshbach resonances in ultracold gases of alkali-metal atoms at desired magnetic fields that are convenient for atomic cooling and degeneracy. For the case of K39+Cs133, where there are no rf-free resonances in regions where Cs may be cooled to degeneracy, we show that a resonance may be created near 21 G with 69.2 MHz rf radiation. This resonance is almost lossless with circularly polarized rf, and the molecules created are long-lived even with plane-polarized rf.

Citation

Owens, D., Xie, T., & Hutson, J. (2016). Creating Feshbach resonances for ultracold molecule formation with radio-frequency fields. Physical Review A, 94(2), Article 023619. https://doi.org/10.1103/physreva.94.023619

• Journal Article Type: Article
• Acceptance Date: May 13, 2016
• Online Publication Date: Aug 15, 2016
• Publication Date: Aug 15, 2016
• Deposit Date: Jul 25, 2016
• Publicly Available Date: Aug 30, 2016
• Journal: Physical Review A
• Print ISSN: 2469-9926
• Electronic ISSN: 2469-9934
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 94
• Issue: 2
• Article Number: 023619
• DOI: https://doi.org/10.1103/physreva.94.023619
• Related Public URLs: https://arxiv.org/abs/1606.09441