Four-wave mixing dynamics of a strongly coupled quantum-dot–microcavity system driven by up to 20 photons

Abstract

The Jaynes-Cummings (JC) model is at the heart of cavity QED and suitable to describe many different systems. Here, the authors use it to investigate a quantum dot strongly coupled to a micropillar cavity. Supported by experiments, they apply four-wave mixing spectroscopy to study the system's dynamics. They push the limits of JC physics by injecting up to $\ensuremath{\sim}20$ photons using ultrashort laser pulses. Starting with complicated dynamics, the signal evolves into a single-frequency oscillation monitoring the relaxation down the JC ladder.