Silicon Quantum Computing (SQC) has detailed a 25-year roadmap in Nature Nanotechnology for developing atomic-scale processors. The article traces the evolution of phosphorus-in-silicon quantum processors from single-atom transistor demonstrations to commercial atomic-scale products. Key milestones include the development of automated atomic-precision fabrication, achievement of high single-qubit gate fidelities and coherence times, and the deployment of commercial analog simulators.
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