4 papers
Topology of anti-parity-time-symmetric non-Hermitian Su-Schrieffer-Heeger model
H. C. Wu, L. Jin, Z. Song
We propose an anti-parity-time (anti-PT ) symmetric non-Hermitian Su-Schrieffer-Heeger (SSH) model, where the large non-Hermiticity constructively creates nontrivial topology and g…
Inversion symmetric non-Hermitian Chern insulator
H. C. Wu, L. Jin, Z. Song
We propose a two-dimensional non-Hermitian Chern insulator with inversion symmetry, which is anisotropic and has staggered gain and loss in both x and y directions. In this system,…
Topological Phase Transition Independent of System Non-Hermiticity
K. L. Zhang, H. C. Wu, L. Jin +1
Non-Hermiticity can vary the topology of system, induce topological phase transition, and even invalidate the conventional bulk-boundary correspondence. Here, we show the introduci…
Relativistic light synthesis of femtosecond sawtooth pulses
K. Hu, H. -C. Wu
Formation of femtosecond sawtooth pulses by high harmonic generation from relativistic oscillating mirrors is studied. For oblique incidence of -polarized laser pulse, one can e…