Eur. Phys. J. D (2015) 69: 184
https://doi.org/10.1140/epjd/e2015-60220-7

Regular Article

PT symmetric Floquet topological phase

Physics Department, Anadolu University, Eskisehir, Turkey

^a e-mail: cyuce@anadolu.edu.tr

Received: 9 April 2015
Received in final form: 3 June 2015
Published online: 28 July 2015

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.