Hybrid model for Rydberg gases including exact two-body correlations

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Output type: Journal article

Author list: Heeg KP, Garttner M, Evers J

Publisher: American Physical Society

Publication year: 2012

Journal: Physical Review A (1050-2947)

Volume number: 86

Issue number: 6

ISSN: 1050-2947

eISSN: 1094-1622

Languages: English-Great Britain (EN-GB)

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Open access status: green

Full text URL: https://arxiv.org/pdf/1202.2779

Abstract

A model for the simulation of ensembles of laser-driven Rydberg-Rydberg interacting multilevel atoms is discussed. Our hybrid approach combines an exact two-body treatment of nearby atom pairs with an effective approximate treatment for spatially separated pairs. We propose an optimized evolution equation based only on the system steady state, and a time-independent Monte Carlo technique is used to efficiently determine this steady state. The hybrid model predicts features in the pair-correlation function arising from multiatom processes which existing models can only partially reproduce. Our interpretation of these features shows that higher-order correlations are relevant already at low densities. Finally, we analyze the performance of our model in the high-density case. DOI: 10.1103/PhysRevA.86.063421

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