Anisotropic polarizability of erbium atoms

Abstract

We report on the determination of the dynamical polarizability of ultracold erbium atoms in the ground and in one excited state at three different wavelengths, which are particularly relevant for optical trapping. Our study combines experimental measurements of the light shift and theoretical calculations. In particular, our experimental approach allows us to isolate the different contributions to the polarizability, namely the isotropic scalar and anisotropic tensor part. For the latter contribution, we observe a clear dependence of the atomic polarizability on the angle between the laser-field-polarization axis and the quantization axis, set by the external magnetic field. Such an angle-dependence is particularly pronounced in the excited-state polarizability. We compare our experimental findings with the theoretical values, based on semi-empirical electronic-structure calculations and we observe a very good overall agreement. Our results pave the way to exploit the anisotropy of the tensor polarizability for spin-selective preparation and manipulation.

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• Anisotropic dependence of tune-out wavelength near Dy 741-nm transition
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Cited by in corpus (36)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Dipolar Quantum Mixtures of Erbium and Dysprosium Atoms
• Realization of a Strongly Interacting Fermi Gas of Dipolar Atoms
• Controlling Dipolar Exchange Interactions in a Dense 3D Array of Large Spin Fermions
• Accurate Determination of the Dynamical Polarizability of Dysprosium
• Study of the inter-species interactions in an ultracold dipolar mixture
• Dysprosium dipolar Bose-Einstein condensate with broad Feshbach resonances
• Spatial separation of rotating binary Bose-Einstein condensate by tuning the dipolar interactions
• Trapping and imaging single dysprosium atoms in optical tweezer arrays
• Anisotropic light-shift and magic-polarization of the intercombination line of Dysprosium atoms in a far-detuned dipole trap
• Observation of a narrow inner-shell orbital transition in atomic erbium at 1299 nm
• Casimir-Polder force and torque for anisotropic molecules close to conducting planes and their effects on CO${}_2$
• Scalar, tensor and vector polarizability of Tm atoms in 532 nm dipole trap
• Optical Tweezer Arrays of Erbium Atoms
• Ultracold rare-earth magnetic atoms with an electric dipole moment
• Spectroscopy of Rydberg States in Erbium using Electromagnetically Induced Transparency
• Ramsey imaging of optical traps
• Quantum chaos in Feshbach resonances of the ErYb system
• Characterisation of three-body loss in ${}^{166}$Er and optimised production of large Bose-Einstein condensates
• Angle-dependent magic wavelengths for the $4s_{1/2}\to 3d_{5/2,3/2}$ transitions of Ca${}^{+}$ ions
• Measurement of the dynamic polarizability of Dy atoms near the 626-nm intercombination line
• Atoms trapped by a spin-dependent optical lattice potential: realization of a ground state quantum rotor
• Losses of thulium atoms from optical dipole traps operating at 532 and 1064 nm
• New opportunites for interactions and control with ultracold lanthanides
• Creation of a degenerate Bose-Bose mixture of erbium and lithium atoms
• Radio-frequency evaporation in an optical dipole trap
• Multi-state interferometric measurement of nonlinear AC Stark shift
• Blue repulsive potential for dysprosium Bose-Einstein condensates
• Forces on alkali Rydberg atoms due to non-linearly polarized light
• Narrowline cooling of dysprosium atoms in an optical tweezer array
• Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance
• Experimental study of tune-out wavelengths for spin-dependent optical lattice in ${}^{87}$Rb Bose-Einstein condensation
• Atomic Observables Induced by Cosmic Fields
• Dissipationless tune-out trapping for a lanthanide-alkali quantum gas mixture
• Van der Waals coefficients for interactions of dysprosium and erbium atoms with alkali-metal and alkaline-earth-metal atoms
• Tune-out wavelength for the thulium atom near 576 nm