- Letter
Quantized topological Anderson-Thouless pump
Phys. Rev. A 106, L051301 – Published 14 November, 2022
DOI: https://doi.org/10.1103/PhysRevA.106.L051301
Abstract
We propose counterintuitive topological pumps induced by disorder in noninteracting and interacting systems. We show an extrinsic topological pump driven by the on-site quasiperiodic potential for a two-loop sequence, where the disorder nonequivalently suppresses the topology of two pump loops. Moreover, we find an intrinsic topological pump induced by the hopping quasiperiodic disorder from a trivial single-loop pump in the clean limit, dubbed the topological Anderson-Thouless pump (TATP) as a dynamical analog of topological Anderson insulators. We demonstrate that the mechanism of the TATP is the disorder-induced shift of gapless critical points and the TATP can even appear in the dynamic disorder and interacting cases. We also extend the TATP to higher-order topological systems with disorder-induced quantized corner transport.