PT Symmetric Floquet Topological Phase

TL;DR

This paper investigates Floquet topological insulators in PT symmetric non-Hermitian systems, demonstrating their existence in 1D waveguide arrays and extending the concept to 2D systems.

Contribution

It introduces the concept of Floquet topological phases in PT symmetric non-Hermitian Hamiltonians and explores their realization in 1D and 2D systems.

Findings

Existence of Floquet topological insulators in 1D PT symmetric waveguides

Extension of Floquet topological phases to 2D non-Hermitian systems

Prediction of topological phases through periodically changing non-Hermitian potentials

Abstract

In this paper, we study the existence of Floquet topological insulators for PT symmetric non-Hermitian Hamiltonians. We consider an array of waveguide in 1D with periodically changing non-Hermitian potential and predict the existence of Floquet topological insulators in the system. We also extend the concept of Floquet topological phase to a two dimensional non-Hermitian system.