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 …

Exceptional points are complex branching singularities of non-Hermitian bands that have
lately attracted considerable interest, particularly in non-Hermitian photonics. In this article …

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

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

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 …

Symmetries and tunability are of fundamental importance in wave scattering control, but
symmetries are often obvious upon visual inspection, which constitutes a significant …

Deriving analytical expressions of dielectric permittivities is required for numerical and
physical modeling of optical systems and the soar of non-Hermitian photonics motivates …

A thorough understanding of the topological classifications of non-Hermitian energy bands
is essential for advancing non-Hermitian band theory and its applications. As evidenced in …

We study analytically and numerically the formation of bound states in the continuum (BICs)
in quantum-mechanical and optical spatially symmetric multimode waveguide systems. The …

Interference with a nonlinear cavity mode undergoing a self-sustained limit cycle can lead to
superradiant amplification of incident waves. This effect, which results from nonlinear wave …