Intensity and radiation statistics of correlated dipoles in GHZ and W-states

TL;DR

This paper analyzes the radiation properties of three-atom systems in GHZ and W-states, revealing how their quantum correlations influence super- and sub-radiance, with implications for optical probing of entanglement.

Contribution

It provides a comparative study of radiation characteristics of GHZ and W-states in different atomic configurations, highlighting their distinct quantum statistical and far-field radiation patterns.

Findings

Distinct radiation patterns for GHZ and W-states

Configuration-dependent super- and sub-radiance effects

Potential for optical entanglement detection

Abstract

We investigate the super and sub-radiance characteristics of the radiation emitted from a system of three two-level atoms, in the GHZ and W-states. The dipolar coupling between atoms leads to two distinct configurations, one in which the three atoms are on a line, and the other in a closed loop form, wherein each atom interacts with both its neighbours. The quantum statistical properties of the emitted radiation show distinctly different characteristics for the GHZ and W-states resulting from the above configurations. The far-field radiation pattern also shows distinct differences between differently entangled states, making it possible for optical probing of entangled states.