Heteronuclear quantum gas mixtures

Details Heteronuclear quantum gas mixtures Heteronuclear quantum gas mixtures

2008-08-29

arxiv.org/abs/0808.4147v2

J. Phys. B: At. Mol. Opt. Phys. 41, 203001 (2008)

Physics

Condensed Matter

Other Condensed Matter

72 pages, updated to published version

Scientific paper

10.1088/0953-4075/41/20/203001

This PhD tutorial article is a review of our experiments on heteronuclear quantum gas mixtures at the University of Hamburg. We introduce basic properties of trapped Fermi-Bose mixtures and demonstrate the achievement of large quantum degenerate mixtures of 40K and 87Rb. Using heteronuclear Feshbach resonances, we show how the heteronuclear interaction can be tuned, allowing us to induce phase separation and collapse for large repulsive and attractive interactions, respectively. We realize Fermi-Bose mixtures in 3D optical lattices as a novel quantum many-body system and study coherence properties of the mixture. Combining our experiments on lattices and Feshbach resonances, we present the first realization of ultracold heteronuclear Feshbach molecules. The molecules are created at individual sites of a 3D optical lattice. We discuss lifetime, binding energy and rf association efficiency in terms of a universal model and give an outlook for possible future developments.

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