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 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.
Ryabtsev
I I
II
Institute of Semiconductor Physics, Prospekt Lavrentyeva 13, 630090 Novosibirsk, Russia. ryabtsev@isp.nsc.ru
Tretyakov
D B
DB
Beterov
I I
II
Entin
V M
VM