Artificial crystals of light, consisting of hundreds of thousands of optical microtraps, are
routinely created by interfering optical laser beams. These so-called optical lattices act as …

Matter waves inside periodic potentials are well known from solid-state physics, where
electrons interacting with a crystal lattice are considered. Atomic Bose-Einstein condensates …

Quantum computers, though not yet available on the market, will revolutionize the future of
information processing. Quantum computers for special purposes like quantum simulators …

We review recent theoretical advances in cold atom physics concentrating on strongly
correlated cold atoms in optical lattices. We discuss recently developed quantum optical …

At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here
we investigate theoretically and experimentally the quenching of the superfluid density of a …

We discuss an open driven-dissipative many-body system, in which the competition of
unitary Hamiltonian and dissipative Liouvillian dynamics leads to a nonequilibrium phase …

We have experimentally studied the unstable dynamics of a harmonically trapped Bose-
Einstein condensate loaded into a 1D moving optical lattice. The lifetime of the condensate …

Abstract Superflow of a Bose–Einstein condensate in an optical lattice is represented by a
Bloch wave, a plane wave with periodic modulation of the amplitude. We review the …

We study the formation of bright solitons in a Bose-Einstein condensate of L i 7 atoms
induced by a sudden change in the sign of the scattering length from positive to negative, as …

An experimentally realizable scheme of periodic sign-changing modulation of the scattering
length is proposed for Bose-Einstein condensates similar to dispersion-management …