The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

The ideas of topology have found tremendous success in closed physical systems, but even
richer properties exist in the more general open or dissipative framework. We theoretically …

Here we present a roadmap on Photonic metasurfaces. This document consists of a number
of perspective articles on different applications, challenge areas or technologies underlying …

Publisher Summary The widespread availability of spatially and temporally coherent laser
sources makes the production of optical vortices inevitable in any experiment involving …

A summary, with references and additional comments, of a talk delivered at the Second
International Workshop on Pseudohermitian Hamiltonians in Quantum Physics (Prague, 14 …

For scalar light, the current is the familiar expectation value of the intensity-weighted
momentum operator. Current is distinct from the local wavevector (not weighted) that could …

Publisher Summary This chapter describes how the current understanding of conical
refraction has been acquired after nearly two centuries of theoretical and experimental …

Topology is central to understanding and engineering materials that display robust physical
phenomena immune to imperfections. Different topological phases of matter are …

In this study, we report a multifunctional edge detection strategy based on the spin Hall effect
of light in a dichroic polarizer. By leveraging the uniaxial properties of a dichroic polarizer, it …

The engineering of the energy dispersion of polaritons in microcavities through
nanofabrication or through the exploitation of intrinsic material and cavity anisotropies has …