Interaction enhanced imaging of individual atoms embedded in dense atomic gases

TL;DR

This paper introduces a novel all-optical imaging technique that leverages interaction-induced shifts and electromagnetically induced transparency to visualize individual atoms, especially Rydberg atoms, in dense gases with high resolution.

Contribution

The paper presents a new imaging method that enhances sensitivity and resolution for observing strongly interacting atoms in dense gases, enabling detailed studies of many-body quantum phenomena.

Findings

Able to image individual impurity atoms despite noise and density fluctuations

Demonstrates imaging of Rydberg atom distributions and correlations

Shows potential for studying complex many-body dynamics

Abstract

We propose a new all-optical method to image individual atoms within dense atomic gases. The scheme exploits interaction induced shifts on highly polarizable excited states, which can be spatially resolved via an electromagnetically induced transparency resonance. We focus in particular on imaging strongly interacting many-body states of Rydberg atoms embedded in an ultracold gas of ground state atoms. Using a realistic model we show that it is possible to image individual impurity atoms with enhanced sensitivity and high resolution despite photon shot noise and atomic density fluctuations. This new imaging scheme is ideally suited to equilibrium and dynamical studies of complex many-body phenomena involving strongly interacting atoms. As an example we study blockade effects and correlations in the distribution of Rydberg atoms optically excited from a dense gas.