Interacting superradiance samples: modified intensities and timescales, and frequency shifts

TL;DR

This paper investigates how interactions between two superradiance samples affect their emission properties, revealing modified intensities, timescales, and frequency shifts due to entanglement and sample separation.

Contribution

It introduces a dressed state formalism to analyze two interacting SR samples, showing how entanglement alters emission rates, intensities, and frequency chirps.

Findings

Interaction reduces SR pulse duration

Interaction increases SR intensity

Frequency chirp depends on sample separation

Abstract

We consider the interaction between distinct superradiance (SR) systems and use the dressed state formalism to solve the case of two interacting two-atom SR samples at resonance. We show that the ensuing entanglement modifies the transition rates and intensities of radiation, as well as introduces a potentially measurable frequency chirp in the SR cascade, the magnitude of which being a function of the separation between the samples. For the dominant SR cascade we find a significant reduction in the duration and an increase of the intensity of the SR pulse relative to the case of a single two-atom SR sample.