Stimulated photon emission and two-photon Raman scattering in a coupled-cavity QED system

TL;DR

This paper investigates photon and polariton scattering in a coupled-cavity QED system, revealing photon-stimulated emission and two-photon Raman processes that could enable photon storage and phase transitions.

Contribution

It introduces analytical and numerical analysis of photon-polariton interactions, demonstrating photon-stimulated emission and polariton generation in a coupled-cavity system.

Findings

Photon can stimulate emission from a polariton.

Two-photon Raman scattering can generate polaritons.

Potential for photon storage via atom-cavity interactions.

Abstract

We study the scattering problem of photon and polariton in a one-dimensional coupled-cavity system. Analytical approximate analysis and numerical simulation show that a photon can stimulate the photon emission from a polariton through polariton-photon collisions. This observation opens the possibility of photon-stimulated transition from insulating to radiative phase in a coupled-cavity QED system. Inversely, we also find that a polariton can be generated by a two-photon Raman scattering process. This paves the way towards single photon storage by the aid of atom-cavity interaction.