Surface plasmon polaritons (SPPs) can achieve light transmission beyond the diffraction
limit due to their special dispersion relationship. As a novel two-dimensional material …

Exceptional points are spectral singularities in non-Hermitian systems at which two or more
eigenvalues and their corresponding eigenvectors simultaneously coalesce. Originating …

Exceptional points (EPs) are branch point singularities of self-intersecting Riemann sheets,
and they can be observed in a non-Hermitian system with complex eigenvalues. It has been …

General plasmonic systems to realize plasmonically induced transparency (PIT) effect only
exist one single PIT mainly because they only allow one single coupling pathway. In this …

We propose an intuitive method, called the time-dependent population imaging (TDPI)
method, to map the dynamical processes of high-order-harmonic generation (HHG) in solids …

Adiabatically encircling an exceptional point (EP) in a two-dimensional parameter space
usually leads to the flip of instantaneous eigenstates. However, encircling dynamically the …

Nonreciprocal transmission forms the basic operation mechanism of optical diodes and
isolators and requires the tantalizing task of breaking the Lorentz reciprocity law. In this …

The intriguing physics of exceptional points (EPs) and spectral singularities in open (non-
Hermitian) active photonic systems has recently sparked increased interest among the …

Non-Hermitian metasurfaces provide an excellent platform for the study of parity-time (PT)
symmetry transition. The exceptional point (EP) in the transition process exhibits peculiar …

We theoretically investigate the Goos-Hänchen (GH) shifts of optical beam in a defective
photonic crystal composed of dielectric multilayers and graphene. The system is non …