Integrated optical addressing of a trapped ytterbium ion
M. Ivory, W. J. Setzer, N. Karl, H. McGuinness, C. DeRose, M. Blain,, D. Stick, M. Gehl, L. P. Parazzoli (Sandia National Laboratories,, Albuquerque, New Mexico, USA)
TL;DR
This paper demonstrates integrated optical delivery in a microfabricated surface ion trap for ytterbium ions, showing low heating rates and stable electric fields, advancing scalable quantum information processing.
Contribution
It presents the first characterization of integrated waveguides for delivering light to trapped ions, with measurements of heating rates and electric charging effects.
Findings
Axial heating rate of 0.78 q/ms at room temperature
No increase in heating rate due to waveguide presence
Electric field stabilizes after initial charging, with 0.9 kHz frequency instability
Abstract
We report on the characterization of heating rates and photo-induced electric charging on a microfabricated surface ion trap with integrated waveguides. Microfabricated surface ion traps have received considerable attention as a quantum information platform due to their scalability and manufacturability. Here we characterize the delivery of 435 nm light through waveguides and diffractive couplers to a single ytterbium ion in a compact trap. We measure an axial heating rate at room temperature of q/ms and see no increase due to the presence of the waveguide. Furthermore, the electric field due to charging of the exposed dielectric outcoupler settles under normal operation after an initial shift. The frequency instability after settling is measured to be 0.9 kHz.
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