358 citations · 3k across the 43 of their papers we have counts for
5 papers · 1 filter
Topological semimetal in a fermionic optical lattice
Kai Sun, W. Vincent Liu, Andreas Hemmerich +1
Optical lattices play a versatile role in advancing our understanding of correlated quantum matter. The recent implementation of orbital degrees of freedom in chequerboard and hexa…
Unconventional superfluid order in the -band of a bipartite optical square lattice
Matthias Ölschläger, Georg Wirth, Andreas Hemmerich
We report on the first observation of bosons condensed into the energy minima of an -band of a bipartite square optical lattice. Momentum spectra indicate that a truly complex-v…
Orbital superfluidity in the -band of a bipartite optical square lattice
Georg Wirth, Matthias Ölschläger, Andreas Hemmerich
The successful emulation of the Hubbard model in optical lattices has stimulated world wide efforts to extend their scope to also capture more complex, incompletely understood scen…
Effective time-independent description of optical lattices with periodic driving
Andreas Hemmerich
For a periodically driven quantum system an effective time-independent Hamiltonian is derived with an eigen-energy spectrum, which in the regime of large driving frequencies approx…
Competing Superconducting States for Ultracold Atoms in Optical Lattices with Artificial Staggered Magnetic Field
Lih-King Lim, Achilleas Lazarides, Andreas Hemmerich +1
We study superconductivity in an ultracold Bose-Fermi mixture loaded into a square optical lattice subjected to a staggered flux. While the bosons form a superfluid at very low tem…