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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Kondo, Jorge M. [1] ; Booth, Donald [2] ; Goncalves, Luis F. [1] ; Shaffer, James P. [2] ; Marcassa, Luis G. [1]
Total Authors: 5
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Paulo - Brazil
[2] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 - USA
Total Affiliations: 2
Document type: Journal article
Source: Physical Review A; v. 93, n. 1 JAN 8 2016.
Web of Science Citations: 6

In this work, we investigate the dc electric-field dependence of two Forster resonant processes in ultracold Rb-85, 37D(5/2) + 37D(5/2) -> 35L(L = O, Q) + 39P(3/2), 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 39P(3/2) 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 x 10(12) cm(-3). (AU)

FAPESP's process: 12/19342-6 - Anisotropic interactions between ultracold Rydberg atoms and Rydberg atom imaging methods
Grantee:Luis Gustavo Marcassa
Support Opportunities: Regular Research Grants
FAPESP's process: 13/02816-8 - Manipulation of atomic collisions in optical traps
Grantee:Luis Gustavo Marcassa
Support Opportunities: Research Projects - Thematic Grants