Fermionic atoms with tunable interactions in a 3D optical lattice
Thilo St\"oferle, Henning Moritz, Christian Schori, Kenneth G\"unter,, Michael K\"ohl, Tilman Esslinger
TL;DR
This paper demonstrates the creation of a quantum degenerate Fermi gas in a 3D optical lattice, exploring Fermi surfaces and band coupling under tunable interactions via Feshbach resonance.
Contribution
It presents the first realization of a fermionic quantum gas in a 3D optical lattice with tunable interactions and studies of band coupling effects.
Findings
Observation of Fermi surfaces in a 3D lattice
Coupling of Bloch bands in strongly interacting regime
Tunable interactions using Feshbach resonance
Abstract
We report on the realization of a quantum degenerate atomic Fermi gas in an optical lattice. Fermi surfaces of noninteracting fermions are studied in a three-dimensional lattice. Using a Feshbach resonance, we observe a coupling of the Bloch bands in the strongly interacting regime.
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