Low-intensity light switching of cavity-atom polaritons

TL;DR

This paper proposes an all-optical switching method for cavity-atom polaritons using quantum interference, enabling low-intensity light control in cavity QED systems for photon switching applications.

Contribution

It introduces a novel all-optical switching scheme in cavity QED systems utilizing quantum interference with low light intensity.

Findings

Effective switching achieved at low light intensities.

Cavity tuned far from atomic resonance yields nearly pure photonic polaritons.

Potential for low-power photon switching applications.

Abstract

I analyze an all-optical switching scheme in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A control laser coupled to the atoms from free space induces quantum interference in the coupled cavity-atom system and performs all optical switching of the cavity-atom polaritons. When the cavity is tuned far away from the atomic resonance, the cavity-atom polariton consists of nearly pure photonic excitation and then the scheme can be used for photon switching at low light intensities.