Polarization singularities of vectorial electromagnetic fields locate at the positions where
properties of polarization ellipses are not defined. First observed for conical diffraction in …

At the interface of classical and quantum physics, the Maxwell and Schrödinger equations
describe how optical fields drive and control electronic phenomena to enable lightwave …

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 …

Topological protection in photonics offers new prospects for guiding and manipulating
classical and quantum information. The mechanism of spin-orbit coupling promises the …

We report a transient plasmonic spin skyrmion topological quasiparticle within surface
plasmon polariton vortices, which is described by analytical modeling and imaging of its …

Ultrafast microscopy takes advantage of photons and electrons to measure dynamics in
matter on the fundamental space and time scales. The interferometric time-resolved two …

Spin and field textures define the topology of the electric and magnetic fields in vacuum.
These textures can be imposed on matter by light–matter interactions on the nanometer …

Topology is an intrinsic property of the orbital symmetry and elemental spin–orbit interaction,
but also, intriguingly, designed vectorial optical fields can break existing symmetries, to …

Unidirectional guided resonances (UGRs) are optical modes in photonic crystal slabs that
radiate toward one side without the need for mirrors on the other. In this Letter, we report a …

Precise manipulation of the direction and redirection of vibrational wave energy is a key
demand in wave physics and engineering. We consider the paradigm of a finite framelike …