1.1k citations · 2.3k across the 44 of their papers we have counts for
44 papers
Quantized charge transport in disordered Floquet topological insulators in the absence of Anderson localization
Lennard Berg, Andreas Alvermann, Holger Fehske
We perform a numerical study of Floquet topological insulators with temporal disorder to investigate the existence of quantized charge transport without Anderson localization. We f…
Orthogonal layers of parallelism in large-scale eigenvalue computations
Andreas Alvermann, Georg Hager, Holger Fehske
We address the communication overhead of distributed sparse matrix-(multiple)-vector multiplication in the context of large-scale eigensolvers, using filter diagonalization as an e…
Immutable quantized transport in Floquet chains
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
We show how quantized transport can be realized in Floquet chains through encapsulation of a chiral or helical shift. The resulting transport is immutable rather than topological i…
Controlling the direction of topological transport in a non-Hermitian time-reversal symmetric Floquet ladder
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
We propose a one-dimensional Floquet ladder that possesses two distinct topological transport channels with opposite directionality. The transport channels occur due to a $\mathbb…
Real and imaginary edge states in stacked Floquet honeycomb lattices
Alexander Fritzsche, Bastian Höckendorf, Andreas Alvermann +1
We present a non-Hermitian Floquet model with topological edge states in real and imaginary band gaps. The model utilizes two stacked honeycomb lattices which can be related via fo…
Cutting off the non-Hermitian boundary from an anomalous Floquet topological insulator
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
In two-dimensional anomalous Floquet insulators, non-Hermitian boundary state engineering can be used to completely separate chiral boundary states from bulk bands in the quasiener…