62 citations · 100 across the 4 of their papers we have counts for
5 papers
Symmetry-broken momentum distributions induced by matter-wave diffraction during time-of-flight expansion of ultracold atoms
Malte Weinberg, Ole Jürgensen, Christoph Ölschläger +3
We study several effects which lead to symmetry-broken momentum distributions of quantum gases released from optical lattices. In particular, we demonstrate that interaction within…
Twisted complex superfluids in optical lattices
Ole Jürgensen, Klaus Sengstock, Dirk-Sören Lühmann
We show that correlated pair tunneling drives a phase transition to a twisted superfluid with a complex order parameter. This unconventional superfluid phase spontaneously breaks t…
Observation of Density-Induced Tunneling
Ole Jürgensen, Florian Meinert, Manfred J. Mark +2
We study the dynamics of bosonic atoms in a tilted one-dimensional optical lattice and report on the first direct observation of density-induced tunneling. We show that the interac…
Dimerized Mott insulators in hexagonal optical lattices
Ole Jürgensen, Dirk-Sören Lühmann
We study bosonic atoms in optical honeycomb lattices with anisotropic tunneling and find dimerized Mott insulator phases with fractional filling. These incompressible insulating ph…
Quantum phases in tunable state-dependent hexagonal optical lattices
Dirk-Sören Lühmann, Ole Jürgensen, Malte Weinberg +3
We study the ground-state properties of ultracold bosonic atoms in a state-dependent graphene-like honeycomb optical lattice, where the degeneracy between the two triangular sublat…