Exceptional points are spectral singularities in open quantum and wave systems that exhibit
a strong spectral response to perturbations. This feature can be exploited for a new …

Unconventional properties of non-Hermitian systems, such as the existence of exceptional
points, have recently been suggested as a resource for sensing. The impact of noise and …

Photonic molecules (PMs) are artificial nanoscale photonic structures that play important
roles in the fundamental optics field. PM quantum optics has recently become a promising …

We propose a new scheme for ultrasensitive laser gyroscopes that utilizes the physics of
exceptional points. By exploiting the properties of such non-Hermitian degeneracies, we …

Exceptional points (EPs) could potentially enhance the sensitivity of an optical sensing
system by orders of magnitude. Higher-order EP systems, having more complex physics …

Exceptional points (EPs)—spectral singularities of non-Hermitian linear systems—have
recently attracted interest for sensing. While initial proposals and experiments focused on …

The concept of parity-time symmetry (PT symmetry) originates from the canonical quantum
mechanics and has become a hot topic recently. As a versatile platform to investigate the …

In the study of exceptional point (EP)-based sensors, the concrete form of the output
spectrum is often dismissed, and it is assumed that there is a corresponding relation …

Exceptional points, resulting from non-Hermitian degeneracies, have the potential to
enhance the capabilities of quantum sensing. Thus, finding exceptional points in different …

In this article, we study the perturbation influence on a parity-time (PT) optical resonator pair.
Critical characteristics of this type of device, including the sensitivity, dynamic range, and …