Collisional Stability of 40K Immersed in a Strongly Interacting Fermi Gas of 6Li

TL;DR

This study explores the collisional stability of 40K atoms in a strongly interacting 6Li Fermi gas, revealing low loss rates across various interactions, which is promising for quantum physics research.

Contribution

It demonstrates the stability of a three-component Fermi mixture with tunable interactions, avoiding molecule formation, for advanced quantum physics experiments.

Findings

Low loss rates in a wide interaction range

Stable mixture with resonant interactions between two species

Potential for studying many-body quantum phenomena

Abstract

We investigate the collisional stability of a sample of 40K atoms immersed in a tunable spin mixture of 6Li atoms. In this three-component Fermi-Fermi mixture, we find very low loss rates in a wide range of interactions as long as molecule formation of 6Li is avoided. The stable fermionic mixture with two resonantly interacting spin states of one species together with another species is a promising system for a broad variety of phenomena in few- and many-body quantum physics.