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arXiv · 0909.3239

Observation of the Stark-tuned Forster resonance between two Rydberg atoms

I. I. Ryabtsev·D. B. Tretyakov·I. I. Beterov·V. M. Entin
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Abstract

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 Forster resonance using the Stark effect. The observed resonance line shapes are in good agreement with numerical Monte Carlo simulations.

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I. I. Ryabtsev, D. B. Tretyakov, I. I. Beterov, V. M. Entin. 2010-02-19. Observation of the Stark-tuned Forster resonance between two Rydberg atoms. https://doi.org/10.1103/physrevlett.104.073003

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