Determination of the ground state polarizability of ¹⁶²Dy near 530 nm

2026/04/03 by Alexandre Journeaux, Maxime Lecomte, Julie Veschambre +3
Physics and Astronomy · #cond-mat.quant-gas #physics.atom-ph

paper · pdf · doi:10.1103/4xl7-c46p

arxiv created 2026/04/03 · arxiv updated 2026/08/05

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'=J-1 intercombination line at 530.306 nm to determine the background scalar and vector polarizabilities of ¹⁶²Dy 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.

Citations

• Structure and interactions of atoms and diatomic molecules: from ultracold gases to doped solids
• Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance
• Narrowline cooling of dysprosium atoms in an optical tweezer array
• Single-atom resolved collective spectroscopy of a one-dimensional atomic array
• Production and stabilization of a spin mixture of ultracold dipolar Bose gases
• Anisotropic polarizability of Dy at 532 nm on the intercombination transition
• Scalar, tensor and vector polarizability of Tm atoms in 532 nm dipole trap
• Anisotropic light-shift and magic-polarization of the intercombination line of Dysprosium atoms in a far-detuned dipole trap
• Accurate Determination of the Dynamical Polarizability of Dysprosium
• Optical trapping of ultracold dysprosium atoms: transition probabilities, dynamic dipole polarizabilities and van der Waals C₆ coefficients
• Anisotropic optical trapping of ultracold erbium atoms
• Dynamic polarizabilities and magic wavelengths for dysprosium
• Theory and applications of atomic and ionic polarizabilities
• Trapping ultracold dysprosium: a highly magnetic gas for dipolar physics
• Optical dipole traps for neutral atoms