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DOE OSTI · 2425574

Ablation loading of barium ions into a surface-electrode trap

Shi, X.·Todaro, S. L.·Mintzer, G. L.·Bruzewicz, C. D.·Chiaverini, J.·Chuang, I. L.
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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 characterize loading of ablated barium from a metallic source in two cryogenic surface-electrode traps with 730 and 50 μm ion-electrode distances. Furthermore, our loading rate agrees with a predictive analytical model, providing insight for the confinement of limited-quantity species of interest for quantum computing, simulation, and sensing.

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74 ATOMIC AND MOLECULAR PHYSICSIon sourceIon-trapLaser ablationPhotoionizationPhysicsQuadrupole ion trapsQuantum computingQuantum informationUltracold atoms

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Shi, X., Todaro, S. L., Mintzer, G. L., Bruzewicz, C. D., Chiaverini, J., Chuang, I. L.. 2023-06-27. Ablation loading of barium ions into a surface-electrode trap. https://doi.org/10.1063/5.0149778

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