{"schemaVersion":"maha-epistemic/1.0","evidencePolicyVersion":"mps/0.1","recordId":"urn:maha:record:cryogenic-superconducting-control-stack","canonicalPath":"/knowledge/quantum-systems/methods/cryogenic-superconducting-control-stack","contentHash":"sha256:9e9c32b8b4b9cd2a5876fb964b6dc0288b4b4620f2c719f0784718c6d94a3c0b","generatedAt":"2026-08-30T16:02:25.911Z","publicationDecision":{"recordId":"urn:maha:record:cryogenic-superconducting-control-stack","publicEligible":true,"evaluatedAgainst":"maha-epistemic/1.0","reasons":[]},"claims":[{"id":"urn:maha:claim:cryogenic-superconducting-control-stack","scope":"The models, apparatus, protocols, datasets, and comparisons reported in Quantum supremacy using a programmable superconducting processor.","boundary":"One experimental control stack does not define universal wiring density, heat load, calibration throughput, reliability, or manufacturing cost for larger processors.","claimKind":"empirical-claim","sourceIds":["source-arute-random-circuits-2019"],"statement":"The cited processor study documents a dilution-refrigerated superconducting device together with room-temperature waveform generation, cryogenic signal conditioning, amplification, multiplexed readout, and repeated calibration procedures.","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-arute-random-circuits-2019","url":"https://www.nature.com/articles/s41586-019-1666-5","title":"Quantum supremacy using a programmable superconducting processor","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":["Frank Arute","Kunal Arya","Ryan Babbush","Dave Bacon","et al."],"boundary":"The reported advantage is task-, circuit-, fidelity-, classical-algorithm-, and comparison-hardware-specific and does not imply general commercial advantage.","publisher":"Nature","establishes":"The study reports random-circuit sampling on a 53-qubit superconducting processor and compares that bounded task with the classical methods and hardware considered in the paper.","identifiers":[{"value":"10.1038/s41586-019-1666-5","scheme":"doi"}],"publishedAt":"2019-10-23","exactLocator":"Abstract; Figures 1–4; Methods; Supplementary Information; data availability.","conflictsOfInterest":"Most authors were affiliated with Google and the work evaluates Google hardware."}],"reviewEvents":[{"scope":"source-fidelity","verdict":"approve","reviewId":"epireview_bd3deb071f1f487daeafc0f0bd8d3fd5","rationale":"Cryogenic superconducting control stack binds claim urn:maha:claim:cryogenic-superconducting-control-stack only to Quantum supremacy using a programmable superconducting processor at Repository copy of Nature 574, 505–510, “Building a high-fidelity processor”, pp. 1–2 and Figure 3. The audit inspected repository-copy at bounded inspected artifact depth and recorded subject and claim support; the claim remains limited to “The models, apparatus, protocols, datasets, and comparisons reported in Quantum supremacy using a programmable superconducting processor.”. This decision applies only to record urn:maha:record:cryogenic-superconducting-control-stack at sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d and does not certify truth, external endorsement, independent reproduction, or fitness for use.","reviewedAt":"2026-08-30T16:01:54.028Z","reviewerId":"expert_maha-internal-editorial-scale-v1","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.","reviewerKind":"internal-editorial","reviewerRole":"AI-assisted record-specific review of inspected source identity, exact locator, bounded claim, uncertainty, non-claims, rights basis, and exact revision. This is not an external subject-matter credential.","targetSha256":"sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d","supersedesReviewId":null,"reviewerProfileVersion":1},{"scope":"domain-fidelity","verdict":"approve","reviewId":"epireview_9b478912ae0e44b5915c7d02bc4c3874","rationale":"Cryogenic superconducting control stack remains within domain quantum-systems. Its mechanism or method is the bounded proposition “The cited processor study documents a dilution-refrigerated superconducting device together with room-temperature waveform generation, cryogenic signal conditioning, amplification, multiplexed readout, and repeated calibration procedures.”; the record does not transfer that proposition beyond One experimental control stack does not define universal wiring density, heat load, calibration throughput, reliability, or manufacturing cost for larger processors. This decision applies only to record urn:maha:record:cryogenic-superconducting-control-stack at sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d and does not certify truth, external endorsement, independent reproduction, or fitness for use.","reviewedAt":"2026-08-30T16:01:54.134Z","reviewerId":"expert_maha-internal-editorial-scale-v1","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.","reviewerKind":"internal-editorial","reviewerRole":"AI-assisted record-specific review of inspected source identity, exact locator, bounded claim, uncertainty, non-claims, rights basis, and exact revision. This is not an external subject-matter credential.","targetSha256":"sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d","supersedesReviewId":null,"reviewerProfileVersion":1},{"scope":"boundary-adequacy","verdict":"approve","reviewId":"epireview_9b795d64102a473fa8e9a01927a17896","rationale":"Cryogenic superconducting control stack retains uncertainty “No platform-independent uncertainty interval exists; numerical values remain attached to the source experiment or model and its stated assumptions.” and replication assessment “This candidate records one bounded source package. Independent replications and contradictory measurements must be compiled as separate records before maturity is upgraded.”. Its non-claims and 2 prohibited inference(s) remain attached to every reuse. This decision applies only to record urn:maha:record:cryogenic-superconducting-control-stack at sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d and does not certify truth, external endorsement, independent reproduction, or fitness for use.","reviewedAt":"2026-08-30T16:01:54.228Z","reviewerId":"expert_maha-internal-editorial-scale-v1","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.","reviewerKind":"internal-editorial","reviewerRole":"AI-assisted record-specific review of inspected source identity, exact locator, bounded claim, uncertainty, non-claims, rights basis, and exact revision. This is not an external subject-matter credential.","targetSha256":"sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d","supersedesReviewId":null,"reviewerProfileVersion":1},{"scope":"rights-and-locator","verdict":"approve","reviewId":"epireview_4004f177821b458ab1fbc122114b5733","rationale":"Quantum supremacy using a programmable superconducting processor is identified by doi:10.1038/s41586-019-1666-5, inspected at Abstract; Figures 1–4; Methods; Supplementary Information; data availability., and retained under citation-with-paraphrase. This approval binds only exact revision sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d. This decision applies only to record urn:maha:record:cryogenic-superconducting-control-stack at sha256:71221adaf50e139ee7ffc0405584c158926babf0468c96e926f5e70685ebbc5d and does not certify truth, external endorsement, independent reproduction, or fitness for use.","reviewedAt":"2026-08-30T16:01:54.340Z","reviewerId":"expert_maha-internal-editorial-scale-v1","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.","reviewerKind":"internal-editorial","reviewerRole":"AI-assisted record-specific review of inspected source identity, exact locator, bounded claim, uncertainty, non-claims, rights basis, and exact revision. 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