Symmetry breaking in 2D layered materials plays a significant role in their macroscopic
electrical, optical, magnetic and topological properties, including, but not limited to, spin …

Nonlinear optics has undergone dramatic developments in the past 60 years, which has
revolutionized the photonic and optoelectronic fields with many essential applications such …

Many non-equilibrium phenomena have been discovered or predicted in optically driven
quantum solids. Examples include light-induced superconductivity, and Floquet-engineered …

For many materials, a precise knowledge of their dispersion spectra is insufficient to predict
their ordered phases and physical responses. Instead, these materials are classified by the …

Terahertz (THz) light has proven to be a fine tool to probe and control quasi-particles and
collective excitations in solids, to drive phase transitions and associated changes in material …

Broadband, efficient and fast conversion of light to electricity is crucial for sensing and clean
energy. The bulk photovoltaic effect (BPVE) is a second-order nonlinear optical effect that …

This article reviews the theoretical and experimental work related to the electronic properties
of bilayer graphene systems. Three types of bilayer stackings are discussed: the AA, AB, and …

The vector characteristics of light and the vectorial transformations during its transmission
lay a foundation for polarized photodetection of objects, which broadens the applications of …

Graphene with massless Dirac fermions can have exceptionally strong third-order optical
nonlinearities. Yet reported values of nonlinear optical susceptibilities for third-harmonic …

Nonlinear responses are actively studied as probes of topology and band geometric
properties of solids. Here, we show that second harmonic generation serves as a probe of …