Kinetic Monte Carlo modelling of dipole blockade in Rydberg excitation experiment

TL;DR

This paper introduces a Kinetic Monte Carlo simulation approach to model Rydberg atom interactions and dynamics, accurately capturing dipole blockade phenomena and enabling large-scale atom simulations efficiently.

Contribution

It presents a novel application of Kinetic Monte Carlo methods combined with N-body integrators to simulate Rydberg excitation dynamics at scale.

Findings

Good agreement with experimental dipole blockade data

Able to simulate tens of thousands of atoms efficiently

Investigates effects of ions and individual particles

Abstract

We present a method to model the interaction and the dynamics of atoms excited to Rydberg states. We show a way to solve the optical Bloch equations for laser excitation of the frozen gas in good agreement with the experiment. A second method, the Kinetic Monte Carlo method gives an exact solution of rate equations. Using a simple N-body integrator (Verlet), we are able to describe dynamical processes in space and time. Unlike more sophisticated methods, the Kinetic Monte Carlo simulation offers the possibility of numerically following the evolution of tens of thousands of atoms within a reasonable computation time. The Kinetic Monte Carlo simulation gives good agreement with dipole-blockade type of experiment. The role of ions and the individual particle effects are investigated.