Coherent optical excitations in two-dimensional (2D) materials, 2D polaritons, can generate
a plethora of optical phenomena that arise from the extraordinary dispersion relations that …

We explore pump-probe high harmonic generation (HHG) from monolayer hexagonal-boron-
nitride, where a terahertz pump excites coherent optical phonons that are subsequently …

High harmonic generation (HHG) have received significant attention for the exploration of
material properties and ultrafast dynamics. However, the lack of consideration for couplings …

High-harmonic generation (HHG) has emerged as a central technique in attosecond science
and strong-field physics, providing a tool for investigating ultrafast dynamics. However, the …

Understanding the emergent electronic structure in twisted atomically thin layers has led to
the exciting field of twistronics. However, practical applications of such systems are …

Moiré superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced
atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic …

We observe strongly anisotropic third-harmonic generation mediated by resonant sum-
frequency driving of Raman-active phonons with terahertz light, extending light-induced dual …

While aluminum scandium nitride based ferroelectric materials have shown significant
promise for non-volatile memory applications, difficulties relating challenges in device …

The nonlinear dynamics of magnetization in antiferromagnets, resulting in high-frequency
spin waves (high-order harmonics) as signal carriers, enable fast magnetic state switching in …

Symmetry is an eternal motif in understanding the characteristics of nearly all the laws and
courses of science. The symmetry‐breaking in the optical crystal will generate a rich variety …