Improved characterization of Feshbach resonances and interaction potentials between 23Na and 87Rb atoms

• Verfasst von: Guo, Zhichao [VerfasserIn]
• Verfasst von: Jia, Fan [VerfasserIn]
• Verfasst von: Zhu, Bing [VerfasserIn]
• Verfasst von: Li, Lintao [VerfasserIn]
• Verfasst von: Hutson, Jeremy M. [VerfasserIn]
• Verfasst von: Wang, Dajun [VerfasserIn]
• Titel: Improved characterization of Feshbach resonances and interaction potentials between 23Na and 87Rb atoms
• Verf.angabe: Zhichao Guo, Fan Jia, Bing Zhu, Lintao Li, Jeremy M. Hutson, and Dajun Wang
• E-Jahr: 2022
• Jahr: 11 February 2022
• Umfang: 10 S.
• Fussnoten: Im Titel sind die 23 und die 87 in 23Na und 87Rb hochgestellt ; Gesehen am 07.06.2022
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2022
• Band/Heft Quelle: 105(2022), 2, Artikel-ID 023313, Seite 1-10
• ISSN Quelle: 2469-9934
• DOI: doi:10.1103/PhysRevA.105.023313
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1806139561

Abstract

The ultracold mixture of 23Na and 87Rb atoms has become an important system for investigating physics in Bose-Bose atomic mixtures and for forming ultracold ground-state polar molecules. In this work, we provide an improved characterization of the most commonly used Feshbach resonance near 347.64 G between 23Na and 87Rb in their absolute ground states. We form Feshbach molecules using this resonance and measure their binding energies by dissociating them via magnetic-field modulation. We use the binding energies to refine the singlet and triplet potential-energy curves, using coupled-channel bound-state calculations. We then use coupled-channel scattering calculations on the resulting potentials to produce a high-precision mapping between magnetic field and scattering length. We also observe ten additional s-wave Feshbach resonances for 23Na and 87Rb in different combinations of Zeeman sublevels of the F=1 hyperfine states. Some of the resonances show two-body inelastic decay due to spin exchange. We compare the resonance properties with coupled-channel scattering calculations that full take account of inelastic properties.