Quantum computing with atomic qubits and Rydberg interactions: progress and challenges

TLDR

Quantum simulation and Rydberg dressing are alternatives to circuit‑based quantum computing for exploring many‑body quantum dynamics. This review surveys quantum computation with neutral‑atom qubits. The authors outline architectural options for large qubit arrays, examine Rydberg‑mediated gate protocols and their two‑ and multi‑qubit fidelities, and evaluate the dressing interaction’s figure of merit for coherent dynamics. They find that dressing interactions enable complex coherent dynamics quantified by a figure of merit, and summarize the current status with an optimistic outlook for future progress.

Abstract

We present a review of quantum computation with neutral atom qubits. After an overview of architectural options and approaches to preparing large qubit arrays we examine Rydberg mediated gate protocols and fidelity for two- and multi-qubit interactions. Quantum simulation and Rydberg dressing are alternatives to circuit based quantum computing for exploring many body quantum dynamics. We review the properties of the dressing interaction and provide a quantitative figure of merit for the complexity of the coherent dynamics that can be accessed with dressing. We conclude with a summary of the current status and an outlook for future progress.