Ablation loading of barium ions into a surface electrode trap

Abstract

Trapped-ion quantum information processing may benefit from qubits encoded in isotopes that are practically available in only small quantities, e.g. due to low natural abundance or radioactivity. Laser ablation provides a method of controllably liberating neutral atoms or ions from low-volume targets, but energetic ablation products can be difficult to confine in the small ion-electrode distance, micron-scale, microfabricated traps amenable to high-speed, high-fidelity manipulation of ion arrays. Here we investigate ablation-based ion loading into surface-electrode traps of different sizes to test a model describing ion loading probability as a function of effective trap volume and other trap parameters. We demonstrate loading of ablated and photoionized barium in two cryogenic surface-electrode traps with 730 $\mu$m and 50 $\mu$m ion-electrode distances. Our loading success probability agrees with a predictive analytical model, providing insight for the confinement of limited-quantity species of interest for quantum computing, simulation, and sensing.

References in corpus (23)

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• Integrated multi-wavelength control of an ion qubit
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• Optical Mass Spectrometry of Cold ${\mathrm{RaOH}}^{+}$ and ${{\mathrm{RaOCH}}_3}^{+}$
• Photoionization and Photoelectric Loading of Barium Ion Traps
• Spectroscopy of a synthetic trapped ion qubit
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• High-Fidelity Ion State Detection Using Trap-Integrated Avalanche Photodiodes
• Efficient photoionization for barium ion trapping using a dipole-allowed resonant two-photon transition
• Optimum electrode configurations for fast ion separation in microfabricated surface ion traps
• Measurement of the branching fractions and lifetime of the $5D_{5/2}$ level of Ba${}^{+}$
• Isotope-Selective Laser Ablation Ion-Trap Loading of ${}^{137}{\mathrm{Ba}}^{+}$ using a ${\mathrm{BaCl}}_2$ Target
• In situ detection of RF breakdown on microfabricated surface ion traps

Cited by in corpus (3)

• A Comparison of Calcium Sources for Ion-Trap Loading via Laser Ablation
• Absorption Spectroscopy of ${}^{40}$Ca Atomic Beams Produced via Pulsed Laser Ablation: A Quantitative Comparison of Ca and CaTiO${}_3$ Targets
• Deterministic preparation of a dual-species two-ion crystal