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arXiv · 1806.00295

Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths

Alexander Guttridge·Matthew D. Frye·Baochun Yang·Jeremy M. Hutson·Simon L. Cornish
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Abstract

We perform two-photon photoassociation spectroscopy of the heteronuclear CsYb molecule to measure the binding energies of near-threshold vibrational levels of the $X~^{2}\Sigma_{1/2}^{+}$ molecular ground state. We report results for $^{133}$Cs$^{170}$Yb, $^{133}$Cs$^{173}$Yb and $^{133}$Cs$^{174}$Yb, in each case determining the energy of several vibrational levels including the least-bound state. We fit an interaction potential based on electronic structure calculations to the binding energies for all three isotopologs and find that the ground-state potential supports 77 vibrational levels. We use the fitted potential to predict the interspecies s-wave scattering lengths for all seven Cs+Yb isotopic mixtures.

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Alexander Guttridge, Matthew D. Frye, Baochun Yang, Jeremy M. Hutson, Simon L. Cornish. 2018-06-01. Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths. https://doi.org/10.1103/physreva.98.022707

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