A far-off-resonance optical trap for a Ba${}^{+}$ ion

Abstract

Optical trapping and ions combine unique advantages of independently striving fields of research. Light fields can form versatile potential landscapes, such as optical lattices, for neutral and charged atoms, avoiding detrimental implications of established radiofrequency (rf) traps while mediating interaction via long range Coulomb forces, controlling and detecting motional and electronic states on the quantum level. Here we show optical trapping of ${}^{138}$Ba${}^{+}$ ions in the absence of rf fields in a far-detuned dipole trap, suppressing photon scattering by three and the related recoil heating by four orders of magnitude. To enhance the prospects for optical as well as hybrid traps, we demonstrate a novel method for stray electric field compensation to a level below 9 mV/m. Our results will be relevant, for example, for ion-atom ensembles, to enable four to five orders of magnitude lower common temperatures, accessing the regime of ultracold interaction and chemistry, where quantum effects are predicted to dominate.

arXiv comment18 pages, 5 figures

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• Buffer-gas cooling of a single ion in a multipole radio frequency trap beyond the critical mass ratio
• Optical Traps for sympathetic Cooling of Ions with ultracold neutral Atoms
• Observation of Rydberg Blockade Induced by a Single Ion
• Rydberg molecules for ion-atom scattering in the ultracold regime
• Optical trapping of ion Coulomb crystals
• Hexagonal Plaquette Spin-spin Interactions and Quantum Magnetism in a Two-dimensional Ion Crystal
• Trapping Ions and Atoms Optically
• Probing Time Dilation in Coulomb Crystals in a high-precision Ion Trap
• Capture Dynamics of Ultracold Atoms in the Presence of an Impurity Ion
• Probing Multiple Electric Dipole Forbidden Optical Transitions in Highly Charged Nickel Ions
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• Production of NaCa${}^{+}$ molecular ions in the ground state from cold atom-ion mixtures by photoassociation via an intermediate state
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• Confinement-Induced Resonances in Ultracold Atom-Ion Systems
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• Motional-Mode Analysis of Trapped Ions
• Quantum simulation of the central spin model with a Rydberg atom and polar molecules in optical tweezers
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• Charge transfer in ultracold gases via Feshbach resonances
• Micromotion minimization using Ramsey interferometry
• Minimizing rf-induced excess micromotion of a trapped ion with the help of ultracold atoms
• Interactions of Ions and Ultracold Neutral Atom Ensembles in Composite Optical Dipole Traps: Developments and Perspectives
• Ultracold Interactions between Ions and Polar Molecules
• Cold hybrid electrical-optical ion trap
• Tunable two-species spin models with Rydberg atoms in circular and elliptical states
• Tune-out wavelength for the thulium atom near 576 nm