2014/03/31 by Paraj Titum, Netanel H. Lindner, Mikael C. Rechtsman +1 · 263 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Condensed matter physics #Floquet theory #Mathematics #Nonlinear system #Photorefractive and Nonlinear Optics #Physics #Quantum mechanics #Theoretical physics #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.dis-nn #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.114.056801
published in Physical Review Letters 114(5), 056801 (American Physical Society) · Version accepted to PRL
openalex publication_date 2015/02/04 · arxiv created 2015/02/10 · arxiv updated 2015/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the possibility of realizing a disorder-induced topological Floquet spectrum in two-dimensional periodically driven systems. Such a state would be a dynamical realization of the topological Anderson insulator. We establish that a disorder-induced trivial-to-topological transition indeed occurs, and characterize it by computing the disorder averaged Bott index, suitably defined for the time-dependent system. The presence of edge states in the topological state is confirmed by exact numerical time evolution of wave packets on the edge of the system. We consider the optimal driving regime for experimentally observing the Floquet topological Anderson insulator, and discuss its possible realization in photonic lattices.