Abstract

HERNANDEZ-RAJKOV, D. et al. Experimental setup for the production of ultracold strongly correlated fermionic superfluids of ⁶Li. Rev. mex. fis. [online]. 2020, vol.66, n.4, pp.388-403.  Epub Jan 31, 2022. ISSN 0035-001X.  https://doi.org/10.31349/revmexfis.66.388.

We present our experimental setup to produce ultracold strongly correlated fermionic superfluids made of a two-component spin-mixture of 6Li atoms. Employing standard cooling techniques, we achieve quantum degeneracy in a single-beam optical dipole trap. Our setup is capable of generating spin-balanced samples at temperatures as low as T/T F = 0.1 containing up to 5 x 104 atomic pairs. We can access different superfluid regimes by tuning the interparticle interactions close to a broad magnetic Feshbach resonance. In particular, we are able to explore the crossover from the molecular Bose-Einstein condensate (BEC) to the Bardeen-Cooper-Schrieffer (BCS) superfluid regimes.

Keywords : Quantum degenerate gases; fermionic superfluidity; Bose-Einstein condensation; laser cooling and trapping.