DPG Phi
Verhandlungen
Verhandlungen
DPG

Düsseldorf 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 56: Quantengase (Fermionen und Gemische)

Q 56.4: Vortrag

Donnerstag, 22. März 2007, 14:45–15:00, 6J

Interacting Fermions in a 3D Optical Lattice — •Niels Strohmaier1, Kenneth Günter1, Yosuke Takasu1, Henning Moritz1, Michael Köhl1,2, and Tilman Esslinger11Institute of Quantum Electronics, ETH Zürich, CH-8093 Zürich, Switzerland — 2Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom

The Fermi-Hubbard model, which is an important element of modern condensed matter theory, can be experimentally explored with fermionic atoms in optical lattices. A particularly appealing feature is the capability to change smoothly from non-interacting to attractive or repulsive interactions by accessing a Feshbach scattering resonance. In the strongly repulsive case, one expects the formation of a fermionic Mott insulator state with reduced number fluctuations on each site. For attractive interactions superfluidity is predicted.

In our experiment, we prepare a spin mixture of ultracold fermions in a three-dimensional optical lattice at various filling factors. Recent results concerning the behaviour of the system for attractive as well as repulsive interactions will be presented.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2007 > Düsseldorf