Nonlinear Landau-Zener Tunnelling in Coupled Waveguide Arrays

TL;DR

This paper explores nonlinear Landau-Zener tunnelling in coupled waveguide arrays, demonstrating how varying input intensity influences asymmetric tunnelling behavior through numerical simulations.

Contribution

It introduces a realistic waveguide setup to observe nonlinear Landau-Zener tunnelling and predicts different tunnelling scenarios based on input intensity variations.

Findings

Asymmetric tunnelling scenarios depend on input beam intensity.

Numerical simulations align with simplified double well system predictions.

The setup enables direct observation of nonlinear tunnelling effects.

Abstract

The possibility of direct observation of Nonlinear Landau-Zener tunnelling effect with a device consisting of two waveguide arrays connected with a tilted reduced refractive index barrier is discussed. Numerical simulations on this realistic setup are interpreted via simplified double well system and different asymmetric tunnelling scenarios were predicted just varying injected beam intensity.