An experimental platform for studying the heteronuclear Efimov effect with an ultracold mixture of ${}^6$Li and ${}^{133}$Cs atoms

Abstract

We present the experimental apparatus enabling the observation of the heteronuclear Efimov effect in an optically trapped ultracold mixture of ${}^6$Li-${}^{133}$Cs with high-resolution control of the interactions. A compact double-species Zeeman slower consisting of four interleaving helical coils allows for a fast-switching between two optimized configurations for either Li or Cs and provides an efficient sequential loading into their respective MOTs. By means of a bichromatic optical trapping scheme based on species-selective trapping we prepare mixtures down to 100 nK of 1$\times$ 10${}^4$ Cs atoms and 7$\times$ 10${}^3$ Li atoms. Highly stable magnetic fields allow high-resolution atom-loss spectroscopy and enable to resolve splitting in the loss feature of a few tens of milligauss. These features allowed for a detailed study of the Efimov effect.

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Cited by in corpus (3)

• Universal Efimov Scaling in the Rabi-Coupled Few-Body Spectrum
• Dissipationless tune-out trapping for a lanthanide-alkali quantum gas mixture
• Dynamic formation of supersolid phase in a mixture of ultracold bosonic and fermionic atoms