Production of degenerate mixtures of dysprosium and lithium atoms

We report on the experimental realization of quantum degenerate Bose-Fermi and Fermi-Fermi mixtures of lithium (⁶Li) and dysprosium (¹⁶⁴Dy/¹⁶¹Dy) atoms. The system features extreme mass imbalance and strong anisotropic dipolar interactions, offering a promising platform for exploring intriguing few-body and many-body physics. For the Bose-Fermi mixture (⁶Li-¹⁶⁴Dy), we achieve nearly pure Bose-Einstein condensate (BEC) of 4×10^{4 164}Dy atoms and a deeply degenerate Fermi gas of 5×10^{5 6}Li atoms at a temperature of T/T_F≈ 0.18. We also characterize the interspecies scattering properties, identifying several Feshbach resonances that enable precise tuning of the interaction strength. Finally, we realize a ⁶Li-¹⁶¹Dy Fermi-Fermi mixture and demonstrate efficient interspecies sympathetic cooling to simultaneous quantum degeneracy. We further quantify mixture stability and thermalization through systematic measurements of lifetime and interspecies collision dynamics.