Dissipationless tune-out trapping for a lanthanide-alkali quantum gas mixture

TL;DR

This paper demonstrates a novel optical control technique for a highly imbalanced Bose-Fermi quantum gas mixture, enabling dissipationless manipulation of one species without affecting the other, thus advancing precision in many-body quantum experiments.

Contribution

It introduces a new dissipationless optical control method for quantum gas mixtures, specifically for erbium-166 and lithium-6, with minimal impact on the other species.

Findings

Achieved dissipationless control of one species in a quantum gas mixture.

Extended the lifetime and stability of the mixture significantly.

Enabled precise manipulation of motional degrees of freedom.

Abstract

Quantum gas mixtures offer a wide field of research, ranging from few-body physics of impurities to many-body physics with emergent long-range interactions and ultracold molecular gases. Achieving precision control of mixtures is much harder than for single-component gases and, consequently, the respective techniques are less developed. Here we report on a decisive step forward in this direction by realizing dissipationless and fully differential optical control of the motional degrees of freedom of one of the species without affecting the other. This is achieved in a novel Bose-Fermi mixture with extreme mass imbalance, erbium-166 and lithium-6. Our experiments pave the way to a new generation of precision many-body experiments with quantum gas mixtures with unprecedented long lifetimes and low temperatures.