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RESEARCH PRODUCT

Controlling the interactions of a few cold Rb Rydberg atoms by radiofrequency-assisted F\"orster resonances

E. A. YakshinaI. I. BeterovV. M. EntinI. I. RyabtsevD. B. TretyakovC. AndreevaC. Andreeva

subject

PhysicsFloquet theoryQuantum PhysicsAtomic and Molecular Physics and OpticsRf fieldPhysics - Atomic Physicssymbols.namesakeElectric fieldRydberg atomPrincipal quantum numberRydberg formulasymbolsRadio frequencyPhysics::Atomic PhysicsAtomic physicsvan der Waals forceCondensed Matter - Quantum Gases

description

Long-range interactions between cold Rydberg atoms, which are used in many important applications, can be enhanced using F\"orster 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 F\"orster resonances in a few cold Rb Rydberg atoms. We also observed radio-frequency-induced F\"orster 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.

yearjournalcountryeditionlanguage
2014-04-01
10.1103/physreva.90.041403http://arxiv.org/abs/1404.0438