A Cascade Superradiance Model

TL;DR

This paper introduces a new cascade superradiance model that extends existing two-level atom models to three-level cascades, providing detailed analysis of emission dynamics and potential applications in quantum noise control.

Contribution

A novel cascade superradiance model that incorporates temporal dynamics and extends to three-level systems, enhancing understanding of collective emission processes.

Findings

Superradiance time delays are quantitatively characterized.

The model describes correlated two-mode emissions in cascade systems.

Potential applications in quantum noise suppression are discussed.

Abstract

Intriguing collective spontaneous cascade emissions have recently been realized. In despite of much success, a depth understanding of the complexity is still lacking. With this motivation, a new simple cascade superradiance model is developed in this work. The existing model of identical two-level atoms is reexamined with a new insight. Temporal evolutions of average time delays and the fluctuations are introduced and the superradiance time delays are obtained in four different ways. These formulations allow to extend the two-level model to a cascade three-level model. The correlated two-mode emissions and the characteristics are discussed in detail. In the future, the correlated emissions from the collective atoms may be used, for example, in quantum noise quenching.