{"release":{"schemaVersion":"maha-epistemic-release/1.0","releaseId":"epirelease_eefc7afc9df94a71b9aea5fe99921fec","releaseKind":"initial","status":"active","recordId":"urn:maha:record:physical-and-logical-qubits","domainSlug":"quantum-systems","targetSha256":"sha256:f950ccf0da9152d4dbbe784488fe7a02efdd22cf4ad7c1bb071f602efe6354c2","canonicalPath":"/knowledge/quantum-systems/comparisons/physical-and-logical-qubits","canonicalVersion":"1.0.0","supersedesReleaseId":null,"approvals":[{"scope":"boundary-adequacy","reviewId":"epireview_99230743bbac4b0fa23793a063e250c4","reviewSha256":"sha256:941ba114331c6fce2ef7d562b6c8875e2fa1a866b3540c435f985c0e5e74c2af","reviewedAt":"2026-08-30T15:03:58.235Z","reviewerKind":"internal-editorial","reviewMethod":"Each criterion is recomputed from the exact record, its inspected alignment audit, source identity, exact locator, rights basis, claim scope, boundary, uncertainty, replication status, prohibited inferences, and revision digest."},{"scope":"domain-fidelity","reviewId":"epireview_7c7823a2de064837b0be34f15dd133e6","reviewSha256":"sha256:30ad0376a5eeb310ab8bb4330d0b0121a1125a614feab57d9c2ac8b703c7d64e","reviewedAt":"2026-08-30T15:03:58.092Z","reviewerKind":"internal-editorial","reviewMethod":"Each criterion is recomputed from the exact record, its inspected alignment audit, source identity, exact locator, rights basis, claim scope, boundary, uncertainty, replication status, prohibited inferences, and revision digest."},{"scope":"rights-and-locator","reviewId":"epireview_c11b34d9c41b446e8d5e5568b80f9429","reviewSha256":"sha256:2755915afa57343251296a504da45ebd85555ae41dc0bfb72965bc974f4927fe","reviewedAt":"2026-08-30T15:03:58.370Z","reviewerKind":"internal-editorial","reviewMethod":"Each criterion is recomputed from the exact record, its inspected alignment audit, source identity, exact locator, rights basis, claim scope, boundary, uncertainty, replication status, prohibited inferences, and revision digest."},{"scope":"source-fidelity","reviewId":"epireview_950c2a50969b4e55a71a17b6c1d9da1e","reviewSha256":"sha256:07b56bcdd281ea97f6246bbda86dff641e37a73e3103dabedd28650bc470ca09","reviewedAt":"2026-08-30T15:03:57.954Z","reviewerKind":"internal-editorial","reviewMethod":"Each criterion is recomputed from the exact record, its inspected alignment audit, source identity, exact locator, rights basis, claim scope, boundary, uncertainty, replication status, prohibited inferences, and revision digest."}],"assuranceTier":"internally-reviewed-canonical","releaseAuthority":{"authoritySha256":"sha256:2a0161a3927ae8366af44bda6671b5249802843ff3895dc292c90e5466b88609","attribution":"withheld-by-consent"},"publicChangeSummary":"Initial canonical publication under the disclosed exact-revision internal editorial tier.","recordSha256":"sha256:bd8de99e07e022a6cb3c820b2b70c111d1b60f143f561bdba047aa475f078ce5","gateDecision":{"reasons":[],"recordId":"urn:maha:record:physical-and-logical-qubits","publicEligible":true,"evaluatedAgainst":"maha-epistemic/1.0"},"releasedAt":"2026-08-30T16:00:16.317Z","releaseSha256":"sha256:f9954f7604d9df967b20a7217c9d8e7d3d8e0ec6fac0a989e03d9118d69dc7f6","withdrawal":null},"provenance":{"schemaVersion":"maha-epistemic/1.0","evidencePolicyVersion":"mps/0.1","recordId":"urn:maha:record:physical-and-logical-qubits","canonicalPath":"/knowledge/quantum-systems/comparisons/physical-and-logical-qubits","contentHash":"sha256:bd8de99e07e022a6cb3c820b2b70c111d1b60f143f561bdba047aa475f078ce5","generatedAt":"2026-08-30T16:00:16.317Z","publicationDecision":{"recordId":"urn:maha:record:physical-and-logical-qubits","publicEligible":true,"evaluatedAgainst":"maha-epistemic/1.0","reasons":[]},"claims":[{"id":"urn:maha:claim:physical-and-logical-qubits","scope":"The models, apparatus, protocols, datasets, and comparisons reported in Scheme for reducing decoherence in quantum computer memory.","boundary":"An encoded state is not automatically fault tolerant; syndrome extraction, gates, leakage, correlated errors, and decoding remain separate.","claimKind":"theoretical-model","sourceIds":["source-shor-qec-1995"],"statement":"The cited code construction demonstrates that one logical state can be encoded across multiple physical qubits to correct specified error classes.","replication":{"asOfDate":"2026-08-24","assessment":"This candidate records one bounded source package. Independent replications and contradictory measurements must be compiled as separate records before maturity is upgraded.","independentReplicationCount":null},"uncertainty":{"kind":"qualitative","statement":"No platform-independent uncertainty interval exists; numerical values remain attached to the source experiment or model and its stated assumptions."},"evidenceMaturity":"single-study"}],"sources":[{"id":"source-shor-qec-1995","url":"https://journals.aps.org/pra/abstract/10.1103/PhysRevA.52.R2493","title":"Scheme for reducing decoherence in quantum computer memory","rights":{"note":"Maha paraphrases the source-level result and links to the version of record; no article passage is reproduced.","basis":"citation-with-paraphrase","quotationUsed":false},"authors":["Peter W. Shor"],"boundary":"A code construction does not establish that a physical system operates below threshold or that its full control stack satisfies fault-tolerance assumptions.","publisher":"Physical Review A, American Physical Society","establishes":"The paper gives a quantum code construction that protects encoded information against specified single-qubit errors under its model.","identifiers":[{"value":"10.1103/PhysRevA.52.R2493","scheme":"doi"}],"publishedAt":"1995-10-01","exactLocator":"Abstract; encoding construction; error-correction argument."}],"reviewEvents":[{"reviewId":"epireview_950c2a50969b4e55a71a17b6c1d9da1e","scope":"source-fidelity","targetSha256":"sha256:f950ccf0da9152d4dbbe784488fe7a02efdd22cf4ad7c1bb071f602efe6354c2","reviewedAt":"2026-08-30T15:03:57.954Z","verdict":"approve","supersedesReviewId":null},{"reviewId":"epireview_7c7823a2de064837b0be34f15dd133e6","scope":"domain-fidelity","targetSha256":"sha256:f950ccf0da9152d4dbbe784488fe7a02efdd22cf4ad7c1bb071f602efe6354c2","reviewedAt":"2026-08-30T15:03:58.092Z","verdict":"approve","supersedesReviewId":null},{"reviewId":"epireview_99230743bbac4b0fa23793a063e250c4","scope":"boundary-adequacy","targetSha256":"sha256:f950ccf0da9152d4dbbe784488fe7a02efdd22cf4ad7c1bb071f602efe6354c2","reviewedAt":"2026-08-30T15:03:58.235Z","verdict":"approve","supersedesReviewId":null},{"reviewId":"epireview_c11b34d9c41b446e8d5e5568b80f9429","scope":"rights-and-locator","targetSha256":"sha256:f950ccf0da9152d4dbbe784488fe7a02efdd22cf4ad7c1bb071f602efe6354c2","reviewedAt":"2026-08-30T15:03:58.370Z","verdict":"approve","supersedesReviewId":null}]},"privacyBoundary":"Operational actor fingerprints, bearer credentials, private reviewer profiles, affiliations, conflicts, and non-consented authority identity fields are excluded."}