  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.
