Shuttling-based trapped-ion quantum information processing

STAHL, A.; SCHMIEGELOW, C.; SCHMIDT-KALER, F.; LEKITSCH, B.; PIJN, D.; MÜLLER, M.; KAUSHAL, V.; HILDER, J.; BERMUDEZ, A.; POSCHINGER, U.

AVS Quantum Science

AVS

Año: 2020 vol. 2

Moving trapped-ion qubits in a microstructured array of radiofrequency traps offers a route toward realizing scalable quantum processing nodes. Establishing such nodes, providing sufficient functionality to represent a building block for emerging quantum technologies, e.g., a quantum computer or quantum repeater, remains a formidable technological challenge. In this review, the authors present a holistic view on such an architecture, including the relevant components, their characterization, and their impact on the overall system performance. The authors present a hardware architecture based on a uniform linear segmented multilayer trap, controlled by a custom-made fast multichannel arbitrary waveform generator. The latter allows for conducting a set of different ion shuttling operations at sufficient speed and quality. The authors describe the relevant parameters and performance specifications for microstructured ion traps, waveform generators, and additional circuitry, along with suitable measurement schemes to verify the system performance. Furthermore, a set of different basic shuttling operations for a dynamic qubit register reconfiguration is described and characterized in detail.