Control of Power in Parity-Time -Symmetric Lattices

Abstract

We investigate wave transport properties of Parity-Time (PT) symmetric lattices that are periodically modulated along the direction of propagation. We demonstrate that in the regime of unbroken PT-symmetry the system Floquet-Bloch modes may interfere constructively leading to either controlled oscillations or linear power absorption and amplification occurring exactly at the phase transition point. The differential power response is effected by the overlap of the gain and loss system distribution with wave intensity pattern that is formed through Rabi oscillations engaging the coupled Floquet-Bloch modes.

References in corpus (8)

• Unidirectional Nonlinear PT-symmetric Optical Structures
• Gain-Driven Discrete Breathers in PT-Symmetric Nonlinear Metamaterials
• MHD alpha^2-dynamo, Squire equation and PT-symmetric interpolation between square well and harmonic oscillator
• Resonant mode flopping in modulated waveguiding structures
• Giant amplification of modes in parity-time symmetric waveguides
• Resonant mode conversion in the waveguides with an unbroken and broken PT-symmetry
• Stochastic $\mathcal{P}\mathcal{T}$-symmetric coupler
• Light propagation in periodically modulated complex waveguides

Cited by in corpus (3)

• PT-symmetric scattering in flow duct acoustics
• Directed momentum current induced by the PT-symmetric driving
• Revisiting the optical $PT$-symmetric dimer