Amplifying single impurities immersed in a gas of ultra cold atoms

TL;DR

This paper introduces a method to amplify and image single impurities in ultra cold atomic gases using Rydberg interactions and Raman transfer, enabling spatial resolution of impurities.

Contribution

The authors develop a novel amplification scheme for single impurities in ultra cold gases based on Rydberg interactions and hyperfine state manipulation.

Findings

Analytical evaluation of the amplification scheme's performance.

Assessment of many-body effects on the amplification process.

Potential for high-resolution imaging of impurities in cold atom systems.

Abstract

We present a method for amplifying a single or scattered impurities immersed in a background gas of ultra cold atoms so that they can be optically imaged and spatially resolved. Our approach relies on a Raman transfer between two stable atomic hyperfine states that is conditioned on the presence of an impurity atom. The amplification is based on the strong interaction among atoms excited to Rydberg states. We perform a detailed analytical study of the performance of the proposed scheme with particular emphasis on the influence of many-body effects.