Topological origin of quantized transport in non-Hermitian Floquet chains
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
Abstract
The authors show that non-Hermitian Floquet chains exhibit topological phases that have no counterpart in Hermitian chains or chains without periodic driving. These phases are characterized by non-contractible quasi-energy loops in the Floquet spectrum, which are separated by an imaginary gap. The non-contractible loops give rise to quantized transport along the chain
Topics & Concepts
Floquet theoryHermitian matrixChain (unit)PhysicsTopology (electrical circuits)Context (archaeology)Work (physics)MathematicsSpectrum (functional analysis)Quantum mechanicsQuantum Mechanics and Non-Hermitian PhysicsTopological Materials and PhenomenaQuantum chaos and dynamical systems