Determination of the ground state polarizability of ${}^{162}$Dy near 530 nm

Abstract

Open-shell lanthanide atoms, and dysprosium in particular, combine a large ground-state angular momentum with dense electronic spectra, making their dynamical polarizability strongly dependent on wavelength and internal state and therefore particularly challenging to characterize accurately. This issue has become especially relevant with the recent development of single-atom trapping of dysprosium in optical-tweezer arrays, where precise knowledge of the polarizability is needed to design optimized trapping architectures. Here, we exploit the strong spin-dependent light shift near the $J^{\prime }=J-1$ intercombination line at 530.306 nm to determine the background scalar and vector polarizabilities of ${}^{162}$Dy in its ground state near this wavelength. Our measurements quantitatively agree with atomic-structure calculations and provide new insight into the contributions of nearby transitions in a spectral region relevant to emerging dysprosium tweezer platforms.

References in corpus (12)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Probing chiral edge dynamics and bulk topology of a synthetic Hall system
• Anisotropic dependence of tune-out wavelength near Dy 741-nm transition
• Realization of an atomic quantum Hall system in four dimensions
• Trapping and imaging single dysprosium atoms in optical tweezer arrays
• Optical Tweezer Arrays of Erbium Atoms
• Production and stabilization of a spin mixture of ultracold dipolar Bose gases
• Measurement of the dynamic polarizability of Dy atoms near the 626-nm intercombination line
• Loss features in ultracold ${}^{162}$Dy gases: two- versus three-body processes
• Radio-frequency evaporation in an optical dipole trap
• Narrowline cooling of dysprosium atoms in an optical tweezer array
• Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance