Exceptional points (EPs) arising in non-Hermitian systems have led to a variety of intriguing
wave phenomena, and have been attracting increased interest in various physical platforms …

Non-Hermitian optics is a burgeoning field at the intersection of quantum physics,
electrodynamics, and nanophotonics. It provides a new perspective of the role of gain and …

Disorder, which qualitatively describes some measure of irregularities in spatial patterns, is
ubiquitous in many-body systems, equilibrium and non-equilibrium states of matter, network …

In the past few years, concepts from non-Hermitian (NH) physics, originally developed within
the context of quantum field theories, have been successfully deployed over a wide range of …

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 …

Exceptional points (EPs) are degeneracies at which two or more eigenvalues and
eigenstates of a physical system coalesce. Dynamically encircling EPs by varying the …

The nonlinear scaling of complexity with the increased number of components in integrated
photonics is a major obstacle impeding large-scale, phase-locked laser arrays. Here, we …

As an emerging energy-harvesting technology, triboelectric nanogenerators (TENGs) have
made rapid progress in the past decade. Alongside the well-known self-powering behavior …

Exceptional points (EPs), at which two or more eigenvalues and eigenstates of a resonant
system coalesce, are associated with non-Hermitian Hamiltonians with gain and/or loss …

Standard exceptional points (EPs) are non-Hermitian degeneracies that occur in open
systems. At an EP, the Taylor series expansion becomes singular and fails to converge—a …