Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas

TL;DR

This study investigates a strongly interacting two-dimensional Fermi gas using radio-frequency spectroscopy, observing confinement-induced resonances and molecules, providing experimental validation of theoretical models in low-dimensional quantum gases.

Contribution

First experimental observation of confinement-induced Feshbach resonance and molecules in a 2D Fermi gas, confirming theoretical predictions.

Findings

Observation of confinement-induced Feshbach resonance

Detection of confinement-induced molecules

Agreement with theoretical models

Abstract

We realize and study a strongly interacting two-component atomic Fermi gas confined to two dimensions in an optical lattice. Using radio-frequency spectroscopy we measure the interaction energy of the strongly interacting gas. We observe the confinement-induced Feshbach resonance and find the existence of confinement-induced molecules in very good agreement with theoretical predictions.