Feshbach resonances are the essential tool to control the interaction between atoms in
ultracold quantum gases. They have found numerous experimental applications, opening up …

In this review, we discuss the properties of a few impurity atoms immersed in a gas of
ultracold fermions—the so-called Fermi polaron problem. On one hand, this many-body …

We report on the achievement of Bose-Einstein condensation of erbium atoms and on the
observation of magnetic Feshbach resonances at low magnetic fields. By means of …

The interplay of quantum statistics and interactions in atomic Bose–Fermi mixtures leads to a
phase diagram markedly different from pure fermionic or bosonic systems. However …

The physics of quantum degenerate atomic Fermi gases in uniform as well as in
harmonically trapped configurations is reviewed from a theoretical perspective. Emphasis is …

After decades of improvements in cooling techniques of several atomic species and in
finding methods for the achievement of stable quantum mixtures, the field is now ready for …

We produce Bose-Einstein condensates of two different species, Rb 87 and K 41, in an
optical dipole trap in proximity of interspecies Feshbach resonances. We discover and …

We report the formation of a dual-species Bose-Einstein condensate of Rb 87 and Cs 133 in
the same trap** potential. Our method exploits the efficient sympathetic cooling of Cs 133 …

The recent experimental realization of strongly imbalanced mixtures of ultracold atoms
opens new possibilities for studying impurity dynamics in a controlled setting. In this paper …

We discover several magnetic Feshbach resonances in collisions of ultracold 39 K atoms, by
studying atom losses and molecule formation. Accurate determination of the magnetic-field …