2 citations · 4 across the 8 of their papers we have counts for
8 papers
Experimental observation of energy-band Riemann surface
Dali Cheng, Heming Wang, Janet Zhong +3
Non-Hermiticity naturally arises in many physical systems that exchange energy with their environment. The presence of non-Hermiticity leads to many novel topological physics pheno…
Topology of the generalized Brillouin zone of one-dimensional models
Heming Wang, Janet Zhong, Shanhui Fan
The generalized Brillouin zones (GBZs) are integral in the analysis of non-Hermitian band structures. Conventional wisdom suggests that the GBZ should be connected, where each poin…
Braiding of dynamical eigenvalues of Hermitian bosonic Kitaev chains
Heming Wang, Shanhui Fan
In quantum mechanics, observables correspond to Hermitian operators, and the spectra are restricted to be real. However, the dynamics of the underlying fields may allow complex eig…
Lorentz-Drude dipoles in the radiative limit and their modeling in finite-difference time-domain methods
Heming Wang, Shanhui Fan
The Lorentz-Drude model for electric dipoles is a classical framework widely used in the study of dipole dynamics and light-matter interactions. Here we focus on the behaviors of L…
Topological nature of edge states for one-dimensional systems without symmetry protection
Janet Zhong, Heming Wang, Alexander N Poddubny +1
We numerically verify and analytically prove a winding number invariant that correctly predicts the number of edge states in one-dimensional, nearest-neighbor (between unit cells),…
Pole and zero edge state invariant for 1D non-Hermitian sublattice symmetry
Janet Zhong, Heming Wang, Shanhui Fan
There have been several criteria for the existence of topological edge states in 1D non-Hermitian two-band sublattice-symmetric tight-binding Hamiltonians. The generalized Brilloui…
Mesoscopic non-Hermitian skin effect
Alexander Poddubny, Janet Zhong, Shanhui Fan
We discuss a generalization of the non-Hermitian skin effect to finite-size photonic structures with neither gain nor loss in the bulk and purely real energy spectrum under periodi…
Band Inversion Flips the Winding of Bound States in the Continuum
Paul Bouteyre, Dung Xuan Nguyen, Loïc Malgrey +10
Bound states in the continuum (BICs) in photonic slabs and metasurfaces appear as polarization singularities in momentum space, characterized by an integer winding number. This win…