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 scattering of electromagnetic waves lies at the heart of most experimental techniques
over nearly the entire electromagnetic spectrum, ranging from radio waves to optics and x …

Abstract Effects connected with the mathematical theory of knots emerge in many areas of
science, from physics, to biology. Recent theoretical work discovered that the braid group …

Optical non-linear phenomena are typically observed in natural materials interacting with
light at high intensities, and they benefit a diverse range of applications from communication …

Bound states in the continuum (BICs) are resonant modes of open structures that do not
suffer dam**, despite being compatible with radiation in terms of their momentum. They …

One of the key insights of non-Hermitian photonics is that well-established concepts such as
the laser can be operated in reverse to realize a coherent perfect absorber (CPA). Although …

The discovery of non-Hermitian skin effect (NHSE) has opened an exciting direction for
unveiling unusual physics and phenomena in non-Hermitian system. Despite notable …

We demonstrate experimentally that reflectionless scattering modes (RSMs), a generalized
version of coherent perfect absorption, can be functionalized to perform reflectionless …

Metamaterials, from optics to radio frequencies and acoustics, have attracted significant
attention over the last few decades, with promising applications in a wide range of …

Leveraging topological properties in the response of electromagnetic systems can greatly
enhance their potential. Although the investigation of singularity‐based electromagnetics …