Creation of a degenerate Bose-Bose mixture of erbium and lithium atoms

Abstract

We report the realization of a degenerate mixture of ${}^{166}$Er and ${}^7$Li atoms in their energetically lowest spin states. The two species are sequentially laser-cooled and loaded into an optical dipole trap, then transported to a glass cell and simultaneously evaporated to degeneracy. Er serves as the coolant for Li, and we observe efficient sympathetic cooling facilitated by a large interspecies elastic scattering cross section. Three-body losses are found to be small, making this platform promising for the study of interacting mixtures with large mass imbalance.

8 pages, 3 figures, 3 appendices

References in corpus (17)

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• Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
• Double-degenerate Fermi mixtures of ${}^6$Li and ${}^{53}$Cr atoms
• Observation of Feshbach resonances in an ${}^{167}$Er-${}^6$Li Fermi-Fermi mixture
• Spectroscopic determination of magnetic-field-dependent interactions in an ultracold Yb(3P2)-Li mixture
• Characterisation of three-body loss in ${}^{166}$Er and optimised production of large Bose-Einstein condensates

Cited by in corpus (2)

• Efimov spectrum in the Born--Oppenheimer picture of 2+1 system with zero-range heavy-light interactions
• Roton-mediated soliton bound states in binary dipolar condensates