A microfabricated 3D ion trap for quantum simulation with heavy ions

Trapped ions are one of the leading platforms for quantum computing, quantum simulation, and precision measurement. In our groups at Rice and Duke Universities, we are testing 3D monolithic, segmented blade traps, designed in collaboration with and manufactured by Translume Inc. Our goal is to combine the benefits of macroscopic three-dimensional traps over surface traps (such as high multidirectional optical access, and deep and symmetric potentials) with the repeatability, scalability, and geometric precision of microfabrication into a flexible quantum information processing platform. Early prototypes showed drifting micromotion when operated at high RF voltage, likely due to thermally activated RF pick-up on some DC electrodes. In order to allow for stable operation at higher voltage and larger ion-electrode distance than similar traps developed in other groups, our third-generation trap implements changes to improve the isolation between the RF and DC electrode and increase the heat sinking of the trap. We report on our ongoing trap characterization.