Reduction of heating rate in a microfabricated ion trap by pulsed-laser cleaning

Abstract

Laser-cleaning of the electrodes in a planar micro-fabricated ion trap has been attempted using ns pulses from a tripled Nd:YAG laser at 355nm. The effect of the laser pulses at several energy density levels has been tested by measuring the heating rate of a single 40Ca+ trapped ion as a function of its secular frequency. A reduction of the electric-field noise spectral density by ~50% has been observed and a change in the frequency dependence also noticed. This is the first reported experiment where the "anomalous heating" phenomenon has been reduced by removing the source as opposed to reducing its thermal driving by cryogenic cooling. This technique may open the way to better control of the electrode surface quality in ion microtraps.

References in corpus (9)

• Quantum computing with trapped ions
• A microfabricated surface-electrode ion trap for scalable quantum information processing
• Scaling and Suppression of Anomalous Quantum Decoherence in Ion Traps
• Trapped-ion probing of light-induced charging effects on dielectrics
• Temperature Dependence of Electric Field Noise Above Gold Surfaces
• Simplified motional heating rate measurements of trapped ions
• Fabrication and heating rate study of microscopic surface electrode ion traps
• Imaging trapped ions with a microfabricated lens for quantum information processing
• Superconducting microfabricated ion traps

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