Coupling two laser-cooled ions via a room-temperature conductor

Abstract

We demonstrate coupling between the motions of two independently trapped ions with a separation distance of 620 $\mu$m. The ion-ion interaction is enhanced via a room-temperature electrically floating metallic wire which connects two surface traps. Tuning the motion of both ions into resonance, we show flow of energy with a coupling rate of 11 Hz. Quantum-coherent coupling is hindered by strong surface electric-field noise in our device. Our ion wire-ion system demonstrates that room-temperature conductors can be used to mediate and tune interactions between independently trapped charges over distances beyond those achievable with free-space dipole-dipole coupling. This technology may be used to sympathetically cool or entangle remotely trapped charges and enable coupling between disparate physical systems.

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Cited by in corpus (4)

• Coherent control of a local phonon in trapped ions using dynamical decoupling
• Strong coherent ion-electron coupling using a wire data bus
• Engineering artificial atomic systems of giant electric dipole moment
• Surface-induced decoherence and heating of charged particles