15 citations · 23 across the 5 of their papers we have counts for
6 papers
Topological chiral edge modes in the continuum of a trivial bulk
Li Ge
Chiral edge modes in topological states of matter are routinely found inside band gaps, which may be deformed and shifted as a function of the lattice momentum. Here we show that t…
Bridging two families of non-Hermiticity: from non-reciprocal couplings to an imaginary potential using the Lanczos transformation
Li Ge
Two types of non-Hermiticity found in physical systems, i.e., non-reciprocal couplings and complex potentials, have gained considerable interest recently. The former leads to the n…
Cyclic ladder operators and hidden Weyl-Heisenberg structure in a Floquet system
Tianao Wu, Li Ge
Ladder operators, found in the quantum harmonic oscillator and other quantized systems, provide an elegant approach to solving or understanding otherwise intricate physics problems…
Non-Hermitian gauged reciprocity and symmetry
Jiecheng Lyu, Zihe Gao, Liang Feng +1
The Lorentz reciprocity is a fundamental property in electromagnetism and well known to break down due to an external magnetic field. With a fictitious or imaginary vector potentia…
Robust zero modes in non-Hermitian systems without global symmetries
Jose D. H. Rivero, Courtney Fleming, Bingkun Qi +2
We present an approach to achieve zero modes in lattice models that do not rely on any symmetry or topology of the bulk, which are robust against disorder in the bulk of any type a…
Non-Hermitian gauged laser arrays with localized excitations: Anomalous threshold and generalized principle of selective pumping
Li Ge, Zihe Gao, Liang Feng
We investigate non-Hermitian skin modes in laser arrays with spatially localized excitation. Intriguingly, we observe an unusual threshold behavior when selectively pumping either…