Claim record · edition 0.1.0
qc-004Established result
Quantum error correction protects logical quantum information by distributing it across multiple physical qubits and repeatedly extracting error information.
The goal is to make logical failure less likely than failure of the underlying components, while preserving the computation.
Limits of this claim
Encoding introduces substantial qubit, control, decoding, and time overhead.
Supporting sources
primary paper · verified
Surface codes: Towards practical large-scale quantum computation
Austin G. Fowler et al. · 2012
Primary technical overview of surface-code fault tolerance.
Source record →primary paper · verified
Quantum error correction below the surface code threshold
Google Quantum AI and collaborators · 2025
Experimental report of below-threshold surface-code memories; it does not demonstrate a general-purpose fault-tolerant computer.
Source record →