Lossless Airy Surface Polaritons in a Metamaterial via Active Raman Gain

TL;DR

This paper proposes a scheme to achieve lossless propagation of Airy surface polaritons using active Raman gain in a metamaterial-dielectric interface, enabling long-distance, non-diffractive, and low-power solitonic surface waves.

Contribution

It introduces a novel method combining active Raman gain and interference effects to eliminate losses in Airy surface polaritons on a metamaterial interface.

Findings

Lossless propagation of Airy surface polaritons demonstrated.

Enhanced Kerr nonlinearity enabling low-power solitonic surface waves.

Potential for long-distance, non-diffractive surface wave applications.

Abstract

We propose a scheme to realize a lossless propagation of linear and nonlinear Airy surface polaritons (SPs) via active Raman gain (ARG). The system we suggest is a planar interface superposed by a negative index metamaterial (NIMM) and a dielectric, where three-level quantum emitters are doped. By using the ARG from the quantum emitters and the destructive interference effect between the electric and magnetic responses from the NIMM, we show that not only the Ohmic loss of the NIMM but also the light absorption of the quantum emitters can be completely eliminated. As a result, non-diffractive Airy SPs may propagate for very long distance without attenuation. We also show that the Kerr nonlinearity of the system can be largely enhanced due to the introduction of the quantum emitters and hence lossless Airy surface polaritonic solitons with very low power can be generated in the system.