30 citations · 30 across the 1 of their papers we have counts for
4 papers
Simple harmonic oscillation in non-Hermitian SSH chain at exceptional point
K. L. Zhang, P. Wang, G. Zhang +1
The balance of gain and loss in an open system may maintain certain Hermitian dynamical behaviors, which can be hardly observed in a popular Hermitian system. In this paper, we sys…
Topological nodal points in two coupled SSH chains
Ci. Li, Sen. Lin, Gang. Zhang +1
We study two coupled Su-Schrieffer-Heeger (SSH) chains system, which is shown to contain rich quantum phases associated with topological invariants protected by symmetries. In the…
Wave emission and absorption at spectral singularities
P. Wang, L. Jin, G. Zhang +1
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, th…
Chern number in Ising models with spatially modulated real and complex fields
C. Li, G. Zhang, Z. Song
We study an one-dimensional transverse field Ising model with additional periodically modulated real and complex fields. It is shown that both models can be mapped on a pseudo spin…