Time-varying media have recently emerged as a new paradigm for wave manipulation, due
to the synergy between the discovery of highly nonlinear materials, such as epsilon-near …

This tutorial offers a comprehensive overview of photonic time crystals: artificial materials
whose electromagnetic properties are periodically modulated in time at scales comparable …

Time has emerged as a new degree of freedom for metamaterials, promising new pathways
in wave control. However, electromagnetism suffers from limitations in the modulation speed …

In order to confine waves beyond the diffraction limit, advances in fabrication techniques
have enabled subwavelength structuring of matter, achieving near-field control of light and …

Temporal interfaces, arising when the electromagnetic properties of a medium are abruptly
switched in time, have been recently raising interest as the dual of spatial interfaces. Their …

Static reactive metasurfaces allow excitation and propagation of surface waves. In this
paper, we theoretically elucidate how surface-wave propagation along a reactive boundary …

In the field of metamaterials, many intriguing phenomena arise from having a structure which
is periodic in space. In time-dependent structures, conceptually similar properties can arise …

The concept of photonic crystals has recently been extended to the time domain and
attracted great interest. Unfortunately, realizing photonic time crystals is a challenging task …

Recently, the temporal control of graphene carrier density has emerged as a viable means
to create various frequency shifting, modulation, and sensing photonic devices. Here we …

We show the possibility of achieving nonreciprocal wave propagation in space-time
modulated media and give an asymptotic analysis of the nonreciprocity property in terms of …