Ultracold Quantum Gases

1. Apparatus for studying Fermi-Fermi-Bose mixtures in optical lattices We have completed the assembly of a new apparatus that can simultaneously cool and trap two different fermionic species, Li and K, as well as K. The cold atom sources are also able to provide Rb and Na in the future. One major interest lies in the creation of heteronuclear, stable ground-state molecules that carry a strong electric dipole moment. Confined in optical lattices, these molecules could be addressable qubits of a quantum computer. Another major thrust area will be the study of many-body physics with mass-imbalanced Fermi mixtures. This will allow us to create a model system for metal-insulator transitions, quantum magnets and superfluids in the presence of disorder.