Floquet-Bloch theory and topology in periodically driven lattices

TL;DR

This paper introduces a comprehensive method for analyzing periodically driven lattice systems using Floquet-Bloch theory, revealing topological phase transitions driven by non-adiabatic effects and enabling new insights into topological matter.

Contribution

It develops a general framework for solving driven lattice models, establishing an equivalence with higher-dimensional static systems, and explores topological transitions induced by non-adiabaticity.

Findings

Effective Hamiltonians for driven systems derived

Topological invariants transition from D+1 to D dimensions

Predicts novel non-adiabatic topological phenomena

Abstract

We propose a general framework to solve tight binding models in D dimensional lattices driven by ac electric fields. Our method is valid for arbitrary driving regimes and allows to obtain effective Hamiltonians for different external fields configurations. We establish an equivalence with time independent lattices in D+1 dimensions, and analyze their topological properties. Further, we demonstrate that non-adiabaticity drives a transition from topological invariants defined in D+1 to D dimensions. Our approach provides a theoretical framework to analyze ac driven systems, with potential applications in topological states of matter, and non-adiabatic topological quantum computation, predicting novel outcomes for future experiments.