Singularities of open systems, known as exceptional points (EPs), have been shown to
exhibit increased sensitivities, but the observation of EPs has so far been limited to …

Exceptional points (EPs) appear as degeneracies in the spectrum of non-Hermitian matrices
at which the eigenvectors coalesce. In general, an EP of order n may find room to emerge if …

The interaction of light with time-varying materials offers intriguing opportunities for
controlling light scattering and wavefront manipulation, thereby unlocking fascinating …

Non-Hermitian theory, originated from quantum mechanics, is a theoretical framework for
investigating the dynamics of open systems. New phenomena can be revealed with this …

We propose a scheme to obtain highly sensitive oscillators in a coupled-resonator system
with an exceptional point of degeneracy (EPD) and a small instability. The oscillator with the …

Photonic systems with time-varying modulations have attracted considerable attention as
they allow for the design of non-reciprocal devices without the need for an external magnetic …

We demonstrate how exceptional points of degeneracy (EPDs) are induced in a single
transmission line (TL) directly by applying periodic space–time modulation to the per-unit …

We exploit the premises of exceptional points of degeneracy (EPDs) induced in linear time-
periodic (LTP) systems to achieve extremely sensitive biosensors. The EPD is formed in a …

We study the rise of exceptional points of degeneracy (EPD) in various distinct circuit
configurations such as gyrator-based coupled resonators, coupled resonators with PT …

We present a scheme for high-sensitive sensors based on an exceptional point of
degeneracy (EPD) in a circuit made of two LC resonators coupled by a gyrator. We study two …