# Two-Dimensional Homogeneous Fermi Gases

## TL;DR

This paper reports the experimental creation of homogeneous two-dimensional Fermi gases, enabling detailed studies of their properties, including the equation of state and momentum distribution, across different interaction regimes.

## Contribution

It presents the first realization of homogeneous 2D Fermi gases in a box potential, allowing precise measurements of their properties and interaction effects.

## Key findings

- Measured the equation of state of a non-interacting 2D Fermi gas
- Observed Pauli blocking via momentum distribution
- Characterized strongly interacting 2D gases across the BEC-BCS crossover

## Abstract

We report on the experimental realization of homogeneous two-dimensional (2D) Fermi gases trapped in a box potential. In contrast to harmonically trapped gases, these homogeneous 2D systems are ideally suited to probe local as well as non-local properties of strongly interacting manybody systems. As a first measurement, we use a local probe to extract the equation of state (EOS) of a non-interacting Fermi gas. We then perform matter wave focusing to extract its momentum distribution and directly observe Pauli blocking in a near unity occupation of momentum states. Finally, we measure the momentum distribution of strongly interacting homogeneous 2D gases in the crossover between attractively interacting fermions and deeply-bound bosonic molecules.