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 x 10^4 Cs atoms and 7 x 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.

E. Lippi, M. Gerken, S. Häfner, M. Repp, R. Pires, M. Rautenberg, T. Krom, E. D. Kuhnle, B.
Tran, J. Ulmanis, L. Chomaz, M. Weidemüller, „An Experimental Platform for Studying the
Heteronuclear Efimov Effect with an Ultracold Mixture of 6Li and 133Cs Atoms“, Few-Body
Syst 66, 1 (2024).

https://link.springer.com/article/10.1007/s00601-024-01971-9

Related to Project C03