Position swapping and pinching in Bose-Fermi mixtures with two-color optical Feshbach resonances

TL;DR

This paper investigates how tuning interactions in a Bose-Fermi mixture of ytterbium isotopes affects density profiles, revealing phenomena like phase separation, pinching, and swapping of fermions and bosons.

Contribution

It demonstrates the use of two-color optical Feshbach resonances to control interactions and explore phase separation in Bose-Fermi mixtures.

Findings

Density profiles show phase separation and swapping phenomena.

Tuning interactions affects fermion and boson density distributions.

Optical Feshbach resonances enable control over mixture behavior.

Abstract

We examine the density profiles of the quantum degenerate Bose-Fermi mixture of $^{174}$Yb-$^{173}$Yb, experimental observed recently, in the mean field regime. In this mixture there is a possibility of tuning the Bose-Bose and Bose-Fermi interactions simultaneously using two well separated optical Feshbach resonances, and it is a good candidate to explore phase separation in Bose-Fermi mixtures. Depending on the Bose-Bose scattering length $a_\BB$, as the Bose-Fermi interaction is tuned the density of the fermions is pinched or swapping with bosons occurs.