Silicon Quantum Computing Traces 25-Year Roadmap to Atomic-Precision Manufacturing in Nature Nanotechnology
quantumcomputingreport.com Oct 14, 2026

Silicon Quantum Computing Traces 25-Year Roadmap to Atomic-Precision Manufacturing in Nature Nanotechnology

AI-summarised brief · reviewed before publication

Silicon Quantum Computing (SQC) published a comment in Nature Nanotechnology tracing the 25‑year development of its phosphorus‑in‑silicon quantum processors. The article details how scanning tunneling microscope (STM) hydrogen lithography evolved from a manual research tool to an automated industrial process that places phosphorus atoms with 0.13‑nanometer precision at rates exceeding hundreds of thousands of qubit registers per day. Using isotopically purified 28Si and epitaxial encapsulation, the platform achieves single‑qubit gate fidelities above 99.99 % and coherence times over 30 seconds. The authors outline the remaining steps toward fault‑tolerant, industrial‑scale 3D integration with classical control electronics and cryogenic interconnects, noting the platform’s higher thermal headroom compared to superconducting circuits.

💡 Why It Matters

  • · The roadmap demonstrates that silicon‑based quantum processors can reach industrial production speeds while maintaining exceptional qubit performance, positioning them as a viable alternative to superconducting systems for large‑scale, cryogenically efficient quantum computing.