This article reviews recent investigations on the phenomenon of Bose-Einstein
condensation of dilute gases. Since the experimental observation of quantum degeneracy in …

The many-body decay of extended collections of two-level systems remains an open
problem. Here, we investigate whether an array of emitters coupled to a one-dimensional …

Scattering is used to probe matter and its interactions in all areas of physics. In ultracold
atomic gases, control over pairwise interactions enables us to investigate scattering in …

Atomic matter waves, like electromagnetic waves, can be focused, reflected, guided and split
by currently available passive atom-optical elements. However, the key for many …

The interaction of short and strong laser pulses with an atomic Bose-Einstein condensate is
found to generate patterns of recoiling atoms that are different from those seen in previous …

A gaseous Bose-Einstein condensate irradiated by a far off-resonance laser has long-range
interatomic correlations caused by laser-induced dipole-dipole interactions. These …

We present a scheme for creating quantum entangled atomic states through the coherent
spin-exchange collision of a spinor Bose-Einstein condensate. The state generated …

Abstract By colliding two Bose-Einstein condensates, we have observed strong bosonic
stimulation of the elastic scattering process. When a weak input beam was applied as a …

We report the observation of matter-wave jet emission in a strongly ferromagnetic spinor
Bose-Einstein condensate of Li 7 atoms. Directional atomic beams with| F= 1, m F= 1⟩ and …

A Bose-Einstein condensate illuminated by a single off-resonant laser beam (“dressed
condensate”) shows a high gain for matter waves and light. We have characterized the …