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Role of multilevel Rydberg interactions in electric-field-tuned Förster resonances

Kondo, Jorge M.; Booth, Donald; Gonçalves, Luís F.; Shaffer, James P.; Marcassa, Luis G.

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Authors

Jorge M. Kondo

Donald Booth

Luís F. Gonçalves

James P. Shaffer

Luis G. Marcassa



Abstract

In this work, we investigate the dc electric-field dependence of two Forster resonant processes in ultracold ¨ 85Rb, 37D5/2 + 37D5/2 → 35L(L = O,Q) + 39P3/2, as a function of the atomic density. At low densities, the 39P3/2 yield as a function of electric field exhibits resonances. With increasing density, the linewidths increase until the peaks merge. Even under these extreme conditions, where the Forster resonance processes show little ¨ electric-field dependence, the 39P3/2 population depends quadratically on the total Rydberg atom population, suggesting that a two-body interaction is the dominant process. In order to explain our results, we implement a theoretical model which takes into account the multilevel character of the interactions and Rydberg atom blockade process using only atom pair interactions. The comparison between the experimental data and the model is very good, suggesting that the Forster resonant processes are dominated by two-body interactions up to ¨ atomic densities of 3.0 × 10^12 cm^−3.

Citation

Kondo, J. M., Booth, D., Gonçalves, L. F., Shaffer, J. P., & Marcassa, L. G. (2016). Role of multilevel Rydberg interactions in electric-field-tuned Förster resonances. Physical Review A, 93(1), Article 012703. https://doi.org/10.1103/physreva.93.012703

Journal Article Type Article
Acceptance Date Aug 23, 2015
Online Publication Date Jan 8, 2016
Publication Date Jan 8, 2016
Deposit Date Jan 10, 2016
Publicly Available Date Jan 25, 2016
Journal Physical Review A
Print ISSN 1050-2947
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 93
Issue 1
Article Number 012703
DOI https://doi.org/10.1103/physreva.93.012703
Publisher URL http://link.aps.org/doi/10.1103/PhysRevA.93.012703

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Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review A 93, 012703 © (2016) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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