42 citations · 127 across the 5 of their papers we have counts for
5 papers
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…
Quantum phase transition induced by real-space topology
C. Li, G. Zhang, S. Lin +1
A quantum phase transition (QPT), including both topological and symmetry breaking types, is usually induced by the change of global parameters, such as external fields or global c…
Transmission phase lapse in the non-Hermitian Aharonov-Bohm interferometer near the spectral singularity
G. Zhang, X. Q. Li, X. Z. Zhang +1
We study the effect of PT-symmetric imaginary potentials embedded in the two arms of an Aharonov-Bohm interferometer on the transmission phase by finding an exact solution for a co…
Asymmetric transmission through a flux-controlled non-Hermitian scattering center
X. Q. Li, X. Z. Zhang, G. Zhang +1
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 quantum…
Conventional quantum phase transition driven by complex parameter in non-Hermitian PT-symmetric Ising model
C. Li, G. Zhang, X. Z. Zhang +1
A conventional quantum phase transition (QPT) can be accessed by varying a real parameter at absolute zero temperature. Motivated by the discovery of the pseudo-Hermiticity of non-…