Nonlinear optical spectroscopies are powerful tools for investigating both static material
properties and light-induced dynamics. Terahertz (THz) emission spectroscopy has …

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 …

Ultrafast experiments using sub-picosecond pulses of light are poised to play an important
role in the study and use of topological materials and, particularly, of the three-dimensional …

We theoretically investigate high-harmonic generation (HHG) in honeycomb-lattice
graphene models when subjected to a DC electric field. By integrating the quantum master …

The quantum kinetic framework provides a versatile method for investigating the dynamical
optical and transport currents of crystalline solids. In this paper, starting from the density …

In this paper the nonlinear interaction of a Weyl semimetal (WSM) with a strong driving
electromagnetic wave field is investigated. In the scope of the structure-gauge-invariant low …

Symmetry plays a central role in conventional and topological phases of matter, making the
ability to optically drive symmetry changes a critical step in developing future technologies …

Nonlinear electromagnetic response functions have reemerged as a crucial tool for studying
quantum materials, due to recently appreciated connections between optical response …

We theoretically study THz-light-driven high-harmonic generation (HHG) in the spin-liquid
states of the Kitaev honeycomb model with a magnetostriction coupling between spin and …

We show that finite current in superconductors can induce topological phase transitions, as
a result of the deformation of the quasiparticle spectrum by a finite center-of-mass (COM) …