121 citations · 144 across the 7 of their papers we have counts for
7 papers
Non-Hermitian scattering in SSH superconducting waveguides: exact Green-function reduction and dimerization-sensitive microwave functionalities
Jie Zhou, Xiao-Xue Zhang, Xi-Zheng Zhang
We formulate an exact Green-function theory for non-Hermitian single-microwave-photon scattering by finite superconducting circuit subsystems embedded in an SSH waveguide. The stru…
Single-photon scattering in a dissipative superconducting-qubit--SSH lattice hybrid
Xiao-Xue Zhang, Jie Zhou, Xi-Zheng Zhang
We study single-photon scattering in a Su--Schrieffer--Heeger (SSH) photonic lattice locally coupled to a superconducting qubit with tunable loss or gain. Working in the single-exc…
Boundary logical subspace and bulk dynamical probes in flux-controlled anomalous Floquet quantum walks
WeiCheng Ning, YanSheng Liu, XiaoXue Zhang +1
We formulate a one-dimensional flux-controlled anomalous Floquet quantum walk and show that it admits a direct microscopic realization in a driven bipartite lattice. The walk consi…
Topological characterization of non-Hermitian multiband systems using Majorana's Stellar Representation
Wei Xin Teo, Linhu Li, Xizheng Zhang +1
For topological characterization of non-Hermitian multiband systems, Majorana's stellar representation (MSR) is applied to 1D multiband models consisting of asymmetric nearest-neig…
Non-Hermitian Floquet topological phases: Exceptional points, coalescent edge modes, and the skin effect
Xizheng Zhang, Jiangbin Gong
Periodically driven non-Hermitian systems can exhibit rich topological band structure and non-Hermitian skin effect, without analogs in their static or Hermitian counterparts. In t…
Equivalent spin-orbit interaction in two-polariton Jaynes-Cummings-Hubbard model
Ci Li, Xizheng Zhang, Zhi Song
A hybrid quantum system combines two or more distinct quantum components, exhibiting features not seen in these individual systems. In this work, we study the one-dimensional Jayne…
SU(2) symmetry in a Hubbard model with spin-orbit coupling
X. Z. Zhang, L. Jin, Z. Song
We study the underlying symmetry in a spin-orbit coupled tight-binding model with Hubbard interaction. It is shown that, in the absence of the on-site interaction, the system posse…