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arXiv · 1202.2779

A hybrid model for Rydberg gases including exact two-body correlations

K. P. Heeg·M. Gärttner·J. Evers
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Abstract

A model for the simulation of ensembles of laser-driven Rydberg-Rydberg interacting multi-level 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 multi-atom 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.

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K. P. Heeg, M. Gärttner, J. Evers. 2012-10-09. A hybrid model for Rydberg gases including exact two-body correlations. https://doi.org/10.1103/physreva.86.063421

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