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 investigate the extreme dynamics of non-Hermitian systems near higher-order
exceptional points in photonic networks constructed using the bosonic algebra method. We …

We suggest a simple method to engineer a tight-binding quantum network based on proper
coupling to an auxiliary non-Hermitian cluster. In particular, it is shown that effective complex …

Parity-time symmetry is of great interest. The reciprocal and unidirectional features are
intriguing besides the symmetry phase transition. Recently, the reciprocal transmission …

We study the possibility of asymmetric transmission induced by a non-Hermitian scattering
center embedded in a one-dimensional waveguide, motivated by the aim of realizing …

We studied the critical dynamics of spectral singularities. The system investigated is a
coupled resonator array with a side-coupled loss (gain) resonator. For a gain resonator, the …

We investigate the properties of two anti-parity-time (anti-PT)-symmetric four-site scattering
centers. The anti-PT-symmetric scattering center may have imaginary couplings, real …

A non-Hermitian interferometer can realize asymmetric transmission in the presence of
imaginary potential and magnetic flux. Here, we propose a non-Hermitian dimer with an …

In contrast to a Hermitian system, in which zero modes are usually a degenerate and
localized edge state in the thermodynamic limit, the zero mode of a finite non-Hermitian …

We theoretically study the non-Hermitian systems, the non-Hermiticity of which arises from
the unequal hopping amplitude (UHA) dimers. The distinguishing features of these models …