We show that a momentum-space meron spin texture for electromagnetic fields in free space
can be generated by controlling the interaction of light with a photonic crystal slab having a …

Topological spin textures are field arrangements that cannot be continuously deformed to a
fully polarized state. In particular, merons are topological textures characterized by half …

Topological properties of materials are typically presented in momentum space. Here, we
demonstrate a universal mapping of topological singularities from momentum to real space …

Topological spin textures, among which skyrmions and merons are typical examples, have
with their swirling vectorial structures triggered enormous interest in physical systems …

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 …

Spin textures with various topological orders are of great theoretical and practical interest.
Hopfion, a spin texture characterized by a three-dimensional topological order was recently …

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 …

The origin of spin-orbit interaction of light at a conventional optical interface lies in the
transverse nature of the photon polarization: The polarizations associated with the plane …

Propagation of light in a medium is dictated by equifrequency surfaces (EFSs), which play a
similar role as Fermi surfaces for electrons in crystals. Engineering the equifrequency …

Collective dynamics of topological magnetic textures can be thought of as a massive particle
moving in a magnetic pinning potential. We demonstrate that inside a cavity resonator this …