Intensity and amplitude correlations in the fluorescence from atoms with interacting Rydberg states

TL;DR

This paper investigates how dipole-dipole interactions between Rydberg atoms affect fluorescence signals, revealing altered dark states and correlations in emitted light due to atomic interactions.

Contribution

It provides a detailed analysis of intensity and amplitude correlations in fluorescence from interacting Rydberg atoms, highlighting the impact of dipole interactions on quantum optical properties.

Findings

Dipole interactions distort dark states and electromagnetically induced transparency.

Correlations in emitted signals are directly linked to Rydberg state interactions.

Steady-state fluorescence properties are significantly modified by atomic interactions.

Abstract

We explore the fluorescence signals from a pair of atoms driven towards Rydberg states on a three-level ladder transition. The dipole--dipole interactions between Rydberg excited atoms significantly distort the dark state and electromagnetically induced transparency behavior observed with independent atoms and, thus, their steady state light emission. We calculate and analyze the temporal correlations between intensities and amplitudes of the signals emitted by the atoms and explain their origin in the atomic Rydberg state interactions.