Observation of the stark-tuned Förster resonance between two Rydberg atoms

Cold atoms in highly excited Rydberg states are promising candidates to implement quantum logic gates of a quantum computer via long-range dipole-dipole interaction. Two-qubit gates require a controlled interaction of only two close Rydberg atoms. We report on the first spectroscopic observation of...

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Bibliographic Details
Published inPhysical review letters Vol. 104; no. 7; p. 073003
Main Authors Ryabtsev, I I, Tretyakov, D B, Beterov, I I, Entin, V M
Format Journal Article
LanguageEnglish
Published United States 19.02.2010
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Summary:Cold atoms in highly excited Rydberg states are promising candidates to implement quantum logic gates of a quantum computer via long-range dipole-dipole interaction. Two-qubit gates require a controlled interaction of only two close Rydberg atoms. We report on the first spectroscopic observation of the resonant dipole-dipole interaction between two cold rubidium Rydberg atoms confined in a small laser excitation volume. The interaction strength was controlled by fine-tuning of the Rydberg levels into a Förster resonance using the Stark effect. The observed resonance line shapes are in good agreement with numerical Monte Carlo simulations.
ISSN:1079-7114
DOI:10.1103/physrevlett.104.073003