Electromagnetically Induced Transparency in strongly interacting Rydberg Gases

TL;DR

This paper introduces a Monte-Carlo method to efficiently model the optical response of Rydberg gases under Electromagnetically Induced Transparency, capturing strong interactions and nonlinear absorption effects.

Contribution

The authors develop a computationally efficient Monte-Carlo approach that accurately describes Rydberg-EIT in strongly interacting atomic gases, aligning well with complex quantum calculations.

Findings

Excellent agreement with quantum calculations

Universal behavior of nonlinear absorption

Applicability across various densities and interaction strengths

Abstract

We develop an efficient Monte-Carlo approach to describe the optical response of cold three-level atoms in the presence of EIT and strong atomic interactions. In particular, we consider a "Rydberg-EIT medium" where one involved level is subject to large shifts due to strong van der Waals interactions with surrounding Rydberg atoms. We find excellent agreement with much more involved quantum calculations and demonstrate its applicability over a wide range of densities and interaction strengths. The calculations show that the nonlinear absorption due to Rydberg-Rydberg atom interactions exhibits universal behavior.