error correction

From error mitigation to fault-tolerant quantum computingibm.com

IBM’s blog outlines a practical continuum from quantum error mitigation to fault‑tolerant error correction, highlighting hybrid spacetime codes that achieve ~10× effective error‑rate reduction (64 logical qubits on 76 physical qubits) and a 63× sampling‑overhead cut versus pure mitigation. It describes how post‑selected QEC combined with probabilistic error cancellation, dynamic circuits, and a n…