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 …

The engineering of the spatial and temporal properties of both the electric permittivity and
the refractive index of materials is at the core of photonics. When vanishing to zero, those …

Gratings which are in apparent motion reveal some startling properties for classical
radiation, especially for luminal gratings traveling at or around the speed of light. We show …

The sixth-generation (6G) communication technology is being developed in full swing and is
expected to be faster and better than the fifth generation. The precise information transfer …

Time-varying metamaterials are currently at the forefront of research, offering immense
possibilities for intriguing wave manipulations. Temporal modulations of metamaterials have …

Here, we show that space-time modulations provide an exciting route to realize complex
nonreciprocal couplings, and, in particular, the elusive axion response. We develop an …

We develop a compact theory that can be applied to a variety of time-varying dispersive
materials. The continuous-wave reflection and transmission coefficients are replaced with …

Optical activity (polarization rotation of light) is one of the most desired features of chiral
media, as it is important for many polarization‐related applications. However, in the THz …

Space-time-varying metamaterials based on uniform-velocity modulation have spurred
considerable interest over the past decade. We present here an extensive investigation of …

The magic angle of Twistronics has attracted a lot of attention because of its peculiar
electrical characteristics. Moiré patterns formed by the superlattice of a twisted bilayer …