Low heating rates in a fiber-attached surface electrode ion trap with integrated photonics

Trapped-ion quantum computers have reached a scale and complexity that is challenging for classical simulations to match. Integrated photonics offers pathways for delivering the laser control fields to the target ions at scales beyond the practical limits of free-space bulk optics. So far, most ion traps with integrated photonics have high heating rates and exhibit charging behaviors that impede high-fidelity gate operations. In this talk, we report on measurements of 137Ba+ in a microfabricated surface electrode ion trap which co-integrates a V-groove fiber array, passive silicon nitride photonics for optical routing and beam shaping, and transparent conductive ITO apertures in surface electrodes. We observe low motional heating rates in the vicinity of ITO, comparable to requirements for typical high-fidelity gating operations in Quantinuum's current commercial systems.