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arXiv · 1404.0438

Controlling the interactions of a few cold Rb Rydberg atoms by radiofrequency-assisted Förster resonances

D. B. Tretyakov·V. M. Entin·E. A. Yakshina·I. I. Beterov·C. Andreeva·I. I. Ryabtsev
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Abstract

Long-range interactions between cold Rydberg atoms, which are used in many important applications, can be enhanced using Förster resonances between collective many-body states controlled by an external electric field. Here we report on the first experimental observation of highly-resolved radio-frequency-assisted Förster resonances in a few cold Rb Rydberg atoms. We also observed radio-frequency-induced Förster resonances which cannot be tuned by a dc electric field. They imply an efficient transition from van der Waals to resonant dipole-dipole interaction due to Floquet sidebands of Rydberg levels appearing in the rf-field. This method can be applied to enhance the interactions of almost arbitrary Rydberg atoms with large principal quantum numbers.

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D. B. Tretyakov, V. M. Entin, E. A. Yakshina, I. I. Beterov, C. Andreeva, I. I. Ryabtsev. 2014-12-04. Controlling the interactions of a few cold Rb Rydberg atoms by radiofrequency-assisted Förster resonances. https://doi.org/10.1103/physreva.90.041403

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