Kerr non-linearity induced light trapping in negative index medium

Kerr non-linearity can induce epsilon-near-zero (ENZ) material characteristics in negative index material when incident pulse intensity I=Ith , the threshold intensity. Such Kerr induced ENZ regime in NIM, where group velocity approaches zero and phase velocity diverges, is ideal for strong exciton -photon interaction that leads to the formation of polaritons oscillating between photonic and excitonic states with frequency ΩR /h, ΩR being the Rabi frequency. Quantum mechanical analysis using polariton dynamics indicates that Kerr induced slowing down of group velocity of an optical pulse can be an alternative means to trap light in negative index medium by controlling the intensity of the light pulse unlike slow light, stopped light or stationary light generated conventionally through electromagnetically induced transparency(EIT) in atomic medium.