Collective interaction of light with an atomic gas can give rise to superradiant instabilities.
We experimentally study the sudden buildup of a reverse light field in a laser-driven high …

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 …

Coherent scattering of light from ultracold atoms involves an exchange of energy and
momentum introducing a wealth of nonlinear dynamical phenomena. As a prominent …

We show that the dipole-dipole interatomic forces induced by an off-resonant running laser
beam can lead to a self-bound pencil-shaped Bose condensate, even if the laser beam is a …

We extend the semiclassical model of the collective atomic recoil laser (CARL) to include the
quantum mechanical description of the center-of-mass motion of the atoms in a Bose …

We demonstrate a Raman amplifier for matter waves, where the amplified atoms and the
gain medium are in two different hyperfine states. This amplifier is based on a form of …

We report on the observation of collective atomic recoil lasing and superradiant Rayleigh
scattering with ultracold and Bose-Einstein condensed atoms in an optical ring cavity. Both …

We theoretically analyze superradiant emission of light from an ultracold gas of bosonic
atoms confined in a bad cavity. A metastable dipolar transition of the atoms couples to the …

Different regimes of collective light scattering are observed when an elongated Bose-
Einstein condensate is pumped by two noninterfering beams counterpropagating along its …