Increased output of superradiant light-emitting diodes due to population fluctuations

TL;DR

This paper demonstrates that population fluctuations in a superradiant LED significantly enhance its output power and Rabi splitting, providing new insights into the quantum dynamics of such devices.

Contribution

It introduces a quantum Maxwell-Bloch model without adiabatic elimination to analyze population fluctuations' effects on superradiant LEDs.

Findings

Population fluctuations increase LED output power

Enhanced collective Rabi splitting observed

Quantum model captures fluctuation effects accurately

Abstract

The quantum nonlinear Maxwell-Bloch equations for a single-mode laser with a two-level active medium are solved in the LED regime without adiabatic elimination of the medium polarization, when the population fluctuation spectrum is much narrower than the radiation and polarization spectra. It is shown that population fluctuations significantly increase the output power and collective Rabi splitting of a superradiant LED.