Bounded definition
An empirical comparison of encoded-memory error behavior as the size or distance of an error-correcting code changes.
What the cited work establishes
The experiment compares surface-code memories of different distances on a superconducting processor and reports the measured logical-error behavior under the stated circuits and decoder.
The models, apparatus, protocols, datasets, and comparisons reported in Suppressing quantum errors by scaling a surface code logical qubit.
Claims: urn:maha:claim:logical-error-suppression
What remains a separate question
The comparison does not establish arbitrary-distance scaling, universal logical gates, or a complete fault-tolerant stack.
The result does not establish a complete fault-tolerant computer, arbitrary-depth logical computation, or transferable logical error rates.
Connected domain graph
Typed dependencies preserve publication state.
Only independently canonical records receive public links and relation statements. Draft graph topology remains private.
Surface-code error correction
outbound connection · method
The measurement tests one predicted scaling behavior of a surface-code memory.
Fault-tolerance threshold condition
outbound connection · concept
Error suppression with increasing code size is a necessary threshold diagnostic.
Fault-tolerance threshold condition
inbound connection · concept
Empirical logical-error scaling tests whether a physical implementation exhibits the required trend.
Claim ledger
Every proposition keeps its own evidence state.
The cited experiment reports lower logical error per cycle for a larger surface-code memory than for a smaller one under the stated circuit, device, and decoder.
- Scope
- The models, apparatus, protocols, datasets, and comparisons reported in Suppressing quantum errors by scaling a surface code logical qubit.
- Boundary
- The comparison does not establish arbitrary-distance scaling, universal logical gates, or a complete fault-tolerant stack.
- Uncertainty
- No platform-independent uncertainty interval exists; numerical values remain attached to the source experiment or model and its stated assumptions.
- Replication
- This candidate records one bounded source package. Independent replications and contradictory measurements must be compiled as separate records before maturity is upgraded.
Primary sources
Citation, locator, rights, and boundary travel together.
Source 1 · Nature
Suppressing quantum errors by scaling a surface code logical qubit
Rajeev Acharya, Igor Aleiner, Richard Allen, Trond I. Andersen, et al.
- Exact locator
- Abstract; Figures 1–4; Methods; Extended Data.
- Establishes
- The experiment compares surface-code memories of different distances on a superconducting processor and reports the measured logical-error behavior under the stated circuits and decoder.
- Boundary
- The result does not establish a complete fault-tolerant computer, arbitrary-depth logical computation, or transferable logical error rates.
- Rights basis
- citation with paraphrase · Maha paraphrases the source-level result and links to the version of record; no article passage is reproduced.
- Declared interests
- Most authors were affiliated with Google Quantum AI and the experiment used Google hardware.