Experimental setup for the production of ultracold strongly correlated fermionic superfluids of Li-6

Year: 2020

Authors: Hernandez-Rajkov D., Padilla-Castillo JE., Mendoza-Lopez M., Colin-Rodriguez R., Gutierrez-Valdes A., Morales-Ramirez SA., Gutierrez-Arenas RA., Gardea-Flores CA., Jauregui-Renaud R., Seman JA., Poveda-Cuevas FJ., Roati G.

Autors Affiliation: Univ Nacl Autonoma Mexico, Inst Fis, Ciudad De Mexico 01000, Mexico; Univ Autonoma Metropolitana Iztapalapa, Dept Fis, Apartado Postal 55-534, Ciudad De Mexico 09340, Mexico; Univ Nacl Autonoma Mexico, Inst Fis, Catedras CONACyT, Ciudad De Mexico 01000, Mexico; CNR, Ist Nazl Ott, I-50019 Sesto Fiorentino, Italy; CNR, European Lab Nonlinear Spect, INO, I-50019 Sesto Fiorentino, Italy; LENS, I-50019 Sesto Fiorentino, Italy

Abstract: We present our experimental setup to produce ultracold strongly correlated fermionic superfluids made of a two-component spin-mixture of Li-6 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 10(4) 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.

Journal/Review: REVISTA MEXICANA DE FISICA

Volume: 66 (4)      Pages from: 388  to: 403

More Information: We are deeply grateful for the financial support provided by the following institutions:
CIC-UNAM and CONACyT through the National Laboratories program, with grants number: LN232652, LN260704, LN271322, LN280181, LN293471 and LN299057.
CONACyT through Ciencia Basica grants 255573 and 254942.
Insituto de Fisica UNAM through grants PIIF-8 and PIIF-9.
DGAPA-UNAM-PAPIIT grant numbers IA101716, IN111516, IN107014 and IN103818.
CONACyT through Redes Tematicas “Tecnologia Cuantica”.
F.J.P.C. would like to thank the support from DGAPA-UNAM and from CLAF-SeCyTI for former postdoctoral fellowships. D.H.R., J.E.P.C., M.M.L., R.C.R., A.G.V. and S.A.M.R. acknowledge their scholarships from CONACyT, while D.H.R. also acknowledge a scholarship from DGAPA-UNAM-PAPIIT.
KeyWords: Quantum degenerate gases; fermionic superfluidity; Bose-Einstein condensation; laser cooling and trapping
DOI: 10.31349/RevMexFis.66.388

Citations: 4
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