Optical metasurfaces have emerged as a groundbreaking technology in photonics, offering
unparalleled control over light–matter interactions at the subwavelength scale with ultrathin …

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 …

Resonances are essential for understanding the interactions between light and matter in
photonic systems. The real frequency response of the non-Hermitian systems depends on …

Logic operation serves as the foundation and core element of computing networks; it will
bring huge vitality to advanced information processing with its adaptation in the optical …

Analysis of non-Hermitian photonic systems by the spectral positions of their topological
singularities plays a central role in their design. Recently, the link between topological …

Tunable optical metasurfaces (MSs) have demonstrated exceptional capabilities in actively
manipulating light fields. However, most existing tunable MSs are limited to controlling only …

Filter synthesis is an inverse problem that is traditionally approached rationally by
considering spatially disjoint resonators, approximating them as lumped elements, and …

Plasmonic nanoparticles enable manipulation and enhancement of light fields at deep
subwavelength scales, leading to structures and devices for diverse applications in optics …

Flat optics of uniform phase gradient metasurfaces based on the generalized Snell's law has
been extensively studied. The optics of nonuniform phase gradient metasurfaces (NPGMs) …

Resonances are common in wave physics and their full and rigorous characterization is
crucial to correctly tailor the response of a system in both time and frequency domains …