Apparatus for Non-Equilibrium Interfaces in Strongly Interacting Fermi Gases

Strongly interacting Fermi gases serve as a useful platform when exploring the transport properties of quantum many-body systems. Here we present our experimental apparatus and our proposed research into spin transport utilizing ultracold lithium-6 atoms. The work proposed here employs a repulsive multi-region trap to initialize the experiment with several regions of differing spin composition, separated by light sheets produced by a digital mirror device (DMD). This trap will allow us to investigate the bulk spin transport properties in normal and superfluid Fermi gases. Additionally, this configuration allows for controlled measurements of transport at normal-superfluid interfaces. Such interfaces serve as a model for normal-superconductor and ferromagnet-superconductor interfaces used in solid state junction devices with strongly correlated materials. We include our theoretical predictions for transport at the normal-superfluid interface based calculations employing the Blonder--Tinkham--Klapwijk (BTK) framework.