The orbital degree of freedom plays a fundamental role in understanding the unconventional
properties in solid state materials. Experimental progress in quantum atomic gases has …

This article provides a synopsis of our recent experimental work exploring Bose–Einstein
condensation in metastable higher Bloch bands of optical lattices. Bipartite lattice …

We review recent developments regarding the quantum dynamics and many-body physics
with light, in superconducting circuits and Josephson analogues, by analogy with atomic …

As in between liquid and crystal phases lies a nematic liquid crystal, which breaks rotation
with preservation of translation symmetry, there is a nematic superfluid phase bridging a …

Ultracold atoms in optical lattices are pristine model systems with a tunability and flexibility
that goes beyond solid-state analogies, eg, dynamical lattice-geometry changes allow …

Chiral magnetism is a fascinating quantum phenomena that has been found in low-
dimensional magnetic materials. It is not only interesting for understanding the concept of …

We study the topological properties of elementary excitations in a staggered px±ipy Bose-
Einstein condensate realized in recent orbital optical lattice experiments. The condensate …

In systems with periodic potential fields, building relatively local Wannier functions can
significantly simplify the Hamiltonian and enhance our understanding of the system's ground …

Hexagonal optical lattices offer a tunable platform to study exotic orbital physics in solid state
materials. Here, we present a versatile high-precision scheme to implement a hexagonal …

We investigated the relaxation and excitation in a frustrated XY model realized by a Bose
gas in Floquet-engineered optical triangular lattices. Periodically driving the position of the …