Radio-frequency driven dipole-dipole interactions in spatially separated volumes

Abstract

Radio-frequency (rf) fields in the MHz range are used to induce resonant energy transfer between cold Rydberg atoms in spatially separated volumes. After laser preparation of the Rydberg atoms, dipole-dipole coupling excites the 49s atoms in one cylinder to the 49p state while the 41d atoms in the second cylinder are transferred down to the 42p state. The energy exchanged between the atoms in this process is 33 GHz. An external rf-field brings this energy transfer into resonance. The strength of the interaction has been investigated as a function of amplitude (0-1 V/cm) and frequency (1-30 MHz) of the rf-field and as a function of a static field offset. Multi-photon transitions up to fifth order as well as selection rules prohibiting the process at certain fields have been observed. The width of the resonances has been reduced compared to earlier results by switching off external magnetic fields of the magneto-optical trap, making sub-MHz spectroscopy possible. All features are well reproduced by theoretical calculations taking the strong ac-Stark shift due to the rf-field into account.

References in corpus (6)

• Rabi flopping between ground and Rydberg states with dipole-dipole atomic interactions
• Spatially resolved observation of dipole-dipole interaction between Rydberg atoms
• Spectroscopic observation of resonant electric dipole-dipole interactions between cold Rydberg atoms
• Enhancement of Rydberg atom interactions using ac Stark shifts
• Determination of the Rb ng-series quantum defect by electric-field-induced resonant energy transfer between cold Rydberg atoms
• Simultaneous position and state measurement of Rydberg atoms

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• Two-qubit gates using adiabatic passage of the Stark-tuned Förster resonances in Rydberg atoms
• Controlling the interactions of a few cold Rb Rydberg atoms by radiofrequency-assisted Förster resonances
• Observation of Stueckelberg oscillations in dipole-dipole interactions
• Adiabatic passage of radiofrequency-assisted Forster resonances in Rydberg atoms for two-qubit gates and generation of Bell states
• Periodically Driven Array of Single Rydberg Atoms
• Rydberg atoms with a reduced sensitivity to dc and low-frequency electric fields
• Stark-tuned Förster resonance and dipole blockade for two to five cold Rydberg atoms: Monte Carlo simulations for various spatial configurations
• Population trapping in a pair of periodically driven Rydberg atoms
• Landau-Zener transitions and Adiabatic impulse approximation in an array of two Rydberg atoms with time-dependent detuning
• Long-range $CC\Phi$ gates via radio-frequency-induced Förster resonances