Lossless Airy Surface Polaritons in a Metamaterial via Active Raman Gain

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.

Electromagnetically induced transparency-like effect achieved by a simple nanosystem for double modulated mode sensor

“…Finally, we make a comparison between the EIT-like effect in our nanosystem and previous works. Asgarnezhad-Zorgabad et al [17,18,21,23] and Huang's group [24][25][26] achieved quantum EIT in atomic molecules. There are also many works regarding the EIT-like effect in non-quantum systems.…”

“…Asgarnezhad-Zorgabad et al generated a polaritonic frequency-comb and a breather at multiple EIT windows in an optical cavity with four-level N-type atoms placed above a negative-index metamaterial layer [23]. In addition to EIT, Huang's group realized the propagation of linear and nonlinear SPPs by means of coherent population oscillation [24] and active Raman gain [25,26] at the interface between a dielectric and a negative-index metamaterial.…”

Electromagnetically induced transparency metamaterials: theories, designs and applications

“…Firstly, the excitation of EIT effect with ultra-low loss is a promising research direction. By exciting surface polaritons (SPs) or by introducing gain elements in EIT metamaterials [187][188][189][190][191], the ultra-low loss can be achieved. For example, by placing an EIT metamaterial at the interface of two materials, all-optical control of SPs can be achieved while avoiding loss [191].…”

“…For example, by placing an EIT metamaterial at the interface of two materials, all-optical control of SPs can be achieved while avoiding loss [191]. Zhang et al utilized the active Raman Gain (ARG) from the quantum emitters and the destructive interference between resonant elements, the absorption loss of the metamaterial and the light absorption of the quantum emitters can be completely eliminated [189]. Wang et al shows unidirectional excitation of radiative-loss-free surface plasmon polaritons in PT-Symmetric systems [187].…”