Triply degenerate quantum mixture of $^{41}$K, $^{40}$K and $^{6}$Li

We report the observation of a triply quantum degenerate mixture of $^{41}$K, $^{40}$K and $^{6}$Li atoms. It is demonstrated that bosonic $^{41}$K atom is an efficient coolant for sympathetic cooling of fermionic $^{40}$K and $^{6}$Li atoms. The $^{40}$K and $^{6}$Li mixture provides access to a strongly correlated Fermi-Fermi mixture allowing us to study superfluidity and Cooper pairing with imbalanced masses. We also present our investigation of $^{41}$K and $^{40}$K, a Bose-Fermi mixture where a 12 G p-wave resonance and a 40 G s-wave resonance are observed. Negligible differential gravitational sag between $^{41}$K and $^{40}$K makes these resonances excellent candidates for studying unexplored properties of Bose-Fermi mixtures such as Boson mediated Cooper pairing.