Molu Shi

Technologies for trapped-ion quantum information systems

Amira M. Eltony, Dorian Gangloff, Molu Shi, Alexei Bylinskii, Vladan Vuletić, Isaac L. Chuang

Abstract

Scaling-up from prototype systems to dense arrays of ions on chip, or vast networks of ions connected by photonic channels, will require developing entirely new technologies that combine miniaturized ion trapping systems with devices to capture, transmit and detect light, while refining how ions are confined and controlled. Building a cohesive ion system from such diverse parts involves many challenges, including navigating materials incompatibilities and undesired coupling between elements. Here, we review our recent efforts to create scalable ion systems incorporating unconventional materials such as graphene and indium tin oxide, integrating devices like optical fibers and mirrors, and exploring alternative ion loading and trapping techniques.

A microfabricated surface ion trap on a high-finesse optical mirror

Peter F. Herskind [1], Shannon X. Wang [1], Molu Shi [1], Yufei Ge [1], Marko Cetina [1], Isaac L. Chuang [1]

Abstract

A novel approach to optics integration in ion traps is demonstrated based on a surface electrode ion trap that is microfabricated on top of a dielectric mirror. Additional optical losses due to fabrication are found to be as low as 80 ppm for light at 422 nm. The integrated mirror is used to demonstrate light collection from, and imaging of, a single 88 Sr+ ion trapped $169\pm4 μ$m above the mirror.