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 …

This work explores the possibility of creating and controlling unconventional nonlinearities
by periodic driving, in a broad class of systems described by the nonlinear Schrödinger …

The breaking of time-reversal symmetry via the spontaneous formation of chiral order is
ubiquitous in nature. Here, we present an unambiguous demonstration of this phenomenon …

We propose a method to create higher orbital states of ultracold atoms in the Mott regime of
an optical lattice. This is done by periodically modulating the position of the trap minima …

Intrinsic spin angular-momentum coupling of an electron has a relativistic quantum origin
with the coupling arising from charged orbits, which does not carry over to charge-neutral …

Orbital degree of freedom plays an important role for understanding quantum many-body
phenomena. In this paper, we study an experimentally related setup with ultracold bosons …

Spontaneous time-reversal symmetry breaking plays an important role in studying strongly
correlated unconventional superconductors. When two superconducting gap functions with …

Nonequilibrium dynamics and effective thermalization are studied in a resonant tunneling
scenario via multilevel Landau-Zener crossings. Our realistic many-body system, composed …

Recent experiments on p-orbital atomic bosons have suggested the emergence of a
spectacular ultracold superfluid with staggered orbital currents in optical lattices. This raises …