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 …

A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

Structured waves are ubiquitous for all areas of wave physics, both classical and quantum,
where the wavefields are inhomogeneous and cannot be approximated by a single plane …

Nearly one century after the birth of quantum mechanics, parity–time symmetry is
revolutionizing and extending quantum theories to include a unique family of non-Hermitian …

In the past decade, the concept of parity-time (PT) symmetry, originally introduced in non-
Hermitian extensions of quantum mechanical theories, has come into thinking of photonics …

The scattering of waves when they propagate through disordered media is an important
limitation for a range of applications, including telecommunications, biomedical imaging …

Topological operations around exceptional points,,,,,,–—time-varying system configurations
associated with non-Hermitian singularities—have been proposed as a robust approach to …

Non-Hermitian photonics and topological photonics, as new research fields in optics, have
attracted much attention in recent years, accompanying by a great deal of new physical …

The article reviews general properties of time-varying dispersive materials. We first briefly
discuss different dispersion models that have been proposed in the literature, the role of the …

Recent works in metamaterials and transformation optics have demonstrated exotic
properties in a number of open systems, including perfect absorption/transmission …