As the counterpart of Hermitian nodal structures, the geometry formed by exceptional points
(EPs), such as exceptional lines (ELs), entails intriguing spectral topology. We report the …

We study an anisotropic two-dimensional non-Hermitian Lieb lattice, where the staggered
gain and loss present in the horizontal and vertical directions, respectively. The intracell …

We propose a mechanism to achieve real energy spectra via Hermitian subspace in non-
Hermitian systems. As an illustrative example, we investigate a system composed of two …

The interplay of topology and non-Hermiticity has led to diverse, exciting manifestations in a
plethora of systems. In this work, we systematically investigate the role of non-Hermiticity in …