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 …

Exceptional points (EPs) are singularities that arise in non-Hermitian physics. Current
research efforts focus only on systems supporting isolated EPs characterized by increased …

Recent years have seen a tremendous progress in the theory and experimental
implementations of non-Hermitian photonics, including all-lossy optical systems as well as …

The realization of higher-order exceptional points (HOEPs) can lead to orders of magnitude
enhancement in light-matter interactions beyond the current fundamental limits …

We employ the intertwining operator technique to synthesize a supersymmetric (SUSY)
array of arbitrary size N. The synthesized SUSY system is equivalent to a spin (N− 1)/2 …

The Petermann factor and the phase rigidity are convenient measures for various aspects of
open quantum and wave systems, such as the sensitivity of energy eigenvalues to …

Degeneracy points and exceptional points embedded in the energy band are distinct
because of their topological features. We report a hybrid exceptional point formed through …

Exceptional points (EPs) are degeneracies of non-Hermitian operators where, in addition to
the eigenvalues, the corresponding eigenmodes become degenerate. Classical and …

We show that arbitrarily-high-order exceptional points (EPs) can be achieved in a
repulsively interacting two-species Bose gas in one dimension. By exactly solving the non …

Exceptional point and spectral singularity are two types of singularity that are unique to non-
Hermitian systems. Here, we report the high-order spectral singularity as a high-order pole …