Industry Newsfault tolerancetrapped ionssuperconducting qubitspost quantum cryptography
Quantum Computing Shows Plausible Fault-Tolerance Progress
8.0
Scott Aaronson wrote on December 21, 2025, after Q2B and a podcast, that experimental quantum hardware made notable progress in 2025, with multiple platforms reporting >99.9% two-qubit gate fidelity. He highlighted trapped ions, superconducting qubits, and neutral atoms, expressed cautious optimism about 2028–2029 roadmaps, and warned of urgency in migrating to post-quantum cryptography.
Key Points
- 1Reports hardware advances: multiple platforms reached >99.9% two-qubit gate fidelity in 2025
- 2Indicates threshold-level progress for fault-tolerance, validating aggressive 2028–2029 roadmaps by major companies
- 3Implies urgent need to accelerate post-quantum cryptography migration and guard detailed cryptanalysis publication
Scoring Rationale
Strong evidence of hardware milestones and credible expert assessment; limited by absence of new peer-reviewed results and detailed benchmarks.
Sources
Public references used for this report.
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