Skyrmions are topologically stable quasiparticles that have been predicted and
demonstrated in quantum fields, solid-state physics and magnetic materials, but only …

Metasurfaces are subwavelength structured thin films consisting of arrays of units that allow
the control of polarization, phase, and amplitude of light over a subwavelength thickness …

Harnessing linear and angular momenta of light is one of the cornerstones in modern optics
and has found tremendous applications in optical circuits, particle manipulation, metrology …

In recent times, the optical-analogous skyrmions, topological quasiparticles with
sophisticated vectorial structures in light, have received an increasing amount of interest …

Topological complex transient electromagnetic fields give access to nontrivial light-matter
interactions and provide additional degrees of freedom for information transfer. An important …

The polarization singularity in momentum space has recently been discovered as a new
class of topological signatures of Bloch modes in photonic crystal slabs concerning the far …

Space-time wave packets (STWPs) constitute a broad class of pulsed optical fields that are
rigidly transported in linear media without diffraction or dispersion, and are therefore …

We analyze scattering properties of twisted bilayer photonic crystal slabs through a high-
dimensional plane wave expansion method. The method is applicable for arbitrary twist …

Spin-momentum locking is a direct consequence of bulk topological order and provides a
basic concept to control a carrier's spin and charge flow for new exotic phenomena in …

We demonstrate by breaking the C 6 symmetry for higher-order at-Γ bound states in the
continuum (BICs) with topological charge-2 in photonic crystals (i) deterministic generation …