Resonant nanostructures, such as photonic metasurfaces, have created an unprecedented
case for enhanced light–matter interactions through local field engineering. However, the …

Recently, there has been increasing interest in the temporal degree of freedom in photonics
due to its analogy with spatial axes, causality and open-system characteristics. In particular …

The metasurface platform with time-varying characteristics has emerged as a promising
avenue for exploring exotic physics associated with Floquet materials and for designing …

Dynamic topological photonics is a novel research field, combining the time-domain optics
and topological physics. In this review, the recent progress and realization platforms of …

Linear frequency conversion enabled by a temporal boundary of a resonant cavity provides
a promising alternative to generating new frequency components, where the temporal …

Ultra-fast switches are essential devices for basic research and technological development.
Here, we demonstrate that aqueous solutions of sodium iodide can be used for this purpose …

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 …

Ultrafast manipulation of optical resonance can establish the time-boundary effect in time-
variant media leading to a new degree of freedom for coherent control of electromagnetic …

Ten review articles in this special issue are presented by leading researchers on a variety of
topics. Qin et al. overviewed the underlying physics of waveguide effective plasmonics in …