{ "schema": "semiagora.superconducting-photon-detector-evidence-source-spine.v1", "version": "2026-08-26-v102", "experimentId": "SA-SENS-SNSPD-001", "generatedDate": "2026-08-26", "rightsBoundary": "Official and primary links, public metadata, abstract-level scope, and original synthesis only. No source body, image, figure, table, equation, code, data row, dimension, operating value, process detail, or reported performance result is copied into the packet.", "modelBoundary": "Every numeric coefficient and row is an original dimensionless SemiAgora teaching assumption. Source-reported values are excluded from generation and validation.", "claimMap": [ { "nodeId": "kn-fm-021", "nodeTitle": "Point and extended defects", "sourceIds": [ "src-nist-snspd-wide-strip-2026", "src-aip-current-crowding-4711217" ], "packetOutputs": [ "three explicit constriction-evidence states", "high-loading-without-constriction-evidence contradiction", "owned spatial-map replacement gate" ] }, { "nodeId": "kn-fm-029", "nodeTitle": "Noise and fluctuation", "sourceIds": [ "src-aps-vortex-assisted-014505", "src-nist-snspd-technology", "src-nist-tn1297" ], "packetOutputs": [ "separate illuminated and dark contexts", "dimensionless dark-activation pressure", "background-separation and uncertainty gates" ] }, { "nodeId": "kn-dv-098", "nodeTitle": "Photodetectors and solar cells", "sourceIds": [ "src-optica-wide-snspd-599984", "src-arxiv-wide-snspd-2601-15971", "src-nist-snspd-technology" ], "packetOutputs": [ "photon-trigger susceptibility proxy", "observable-event context", "explicit zero calibrated-efficiency predictions" ] }, { "nodeId": "kn-dv-110", "nodeTitle": "Qubits and cryogenic interfaces", "sourceIds": [ "src-nist-snspd-wide-strip-2026", "src-nist-quantum-radiometry", "src-nist-snspd-timing-spatial" ], "packetOutputs": [ "detector/readout evidence lineage", "zero cryostat or instrument-control actions", "owned interface evidence gate" ] }, { "nodeId": "kn-mp-190", "nodeTitle": "Instrument resolution and calibration", "sourceIds": [ "src-nist-snspd-efficiency-calibration", "src-nist-quantum-radiometry", "src-nist-snspd-timing-spatial" ], "packetOutputs": [ "three metrology-lineage states", "timing-lineage confidence score", "measurand and calibration replacement gate" ] }, { "nodeId": "kn-mp-217", "nodeTitle": "Calibration traceability", "sourceIds": [ "src-nist-snspd-efficiency-calibration", "src-nist-quantum-radiometry", "src-nist-tn1297" ], "packetOutputs": [ "photon-flux traceability proxy", "background-control proxy", "nominal-versus-expanded teaching uncertainty states" ] } ], "sources": [ { "id": "src-nist-snspd-wide-strip-2026", "label": "NIST: wider superconducting photon detectors and edge-current redistribution", "organization": "NIST", "url": "https://www.nist.gov/news-events/news/2026/08/nist-researchers-supersize-quantum-technology-help-detect-faint-photons", "sourceClass": "government-research-summary", "rights": "Official link, public metadata, and original synthesis only; no article text, image, device dimension, current, field, performance value, or fabrication detail is copied.", "note": "Current-distribution, edge-defect, wide-strip, dark-event, and remaining-efficiency-evidence vocabulary anchor." }, { "id": "src-optica-wide-snspd-599984", "label": "Optica: intrinsic-performance limits of wider SNSPDs", "organization": "Optica Publishing Group / research authors", "url": "https://doi.org/10.1364/OPTICA.599984", "sourceClass": "primary-journal-metadata", "rights": "Publisher DOI and metadata only; no publication body, figure, table, equation, device value, process condition, or conclusion is mirrored.", "note": "Primary publication anchor for current redistribution and evidence boundaries; all generated coefficients are independent SemiAgora assumptions." }, { "id": "src-arxiv-wide-snspd-2601-15971", "label": "arXiv: wider SNSPD intrinsic-limit preprint record", "organization": "arXiv / research authors", "url": "https://arxiv.org/abs/2601.15971", "sourceClass": "primary-preprint-metadata", "rights": "Public metadata, abstract, version history, and link only; no PDF text, source, figure, table, equation, dimension, or result is copied.", "note": "Versioned preprint lineage for the current NIST/Optica work; it supplies no numeric input to the model." }, { "id": "src-aps-current-crowding-174510", "label": "APS: geometry-dependent critical currents in superconducting nanocircuits", "organization": "American Physical Society / research authors", "url": "https://journals.aps.org/prb/abstract/10.1103/PhysRevB.84.174510", "sourceClass": "primary-journal-abstract", "rights": "Publisher abstract and metadata link only; no article body, geometry, equation, field map, figure, table, or result is copied.", "note": "Geometry and current-crowding mechanism vocabulary anchor without importing a critical-current model." }, { "id": "src-aip-current-crowding-4711217", "label": "AIP: experimental critical-current reduction from current crowding", "organization": "AIP Publishing / research authors", "url": "https://doi.org/10.1063/1.4711217", "sourceClass": "primary-journal-metadata", "rights": "DOI, title, and abstract-level scope only; no paper body, device geometry, process, measurement row, figure, table, or result is copied.", "note": "Experimental-evidence anchor showing why geometry and constriction claims require owned measurements." }, { "id": "src-aps-vortex-assisted-014505", "label": "APS: vortex-assisted photon and dark-count mechanisms", "organization": "American Physical Society / research authors", "url": "https://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.014505", "sourceClass": "primary-journal-abstract", "rights": "Publisher abstract and metadata link only; no derivation, equation, rate, field condition, figure, table, or result is copied.", "note": "Mechanism-separation anchor for photon, dark, and vortex-assisted contexts without selecting a mechanism for any real detector." }, { "id": "src-nist-snspd-efficiency-calibration", "label": "NIST: photon-counting detection-efficiency calibration comparison", "organization": "NIST / national metrology institute authors", "url": "https://www.nist.gov/publications/verification-calibration-methods-determining-photon-counting-detection-efficiency-using", "sourceClass": "government-primary-publication-metadata", "rights": "Official metadata and abstract-level scope only; no calibration data, uncertainty value, setup, equation, table, or result is copied.", "note": "Photon-flux traceability, connector/coupling lineage, and calibration-comparison evidence anchor." }, { "id": "src-nist-quantum-radiometry", "label": "NIST Quantum Radiometry", "organization": "NIST", "url": "https://www.nist.gov/programs-projects/quantum-radiometry", "sourceClass": "government-metrology-program", "rights": "Official program link and original synthesis only; no image, apparatus detail, calibration procedure, service result, or operating instruction is copied.", "note": "Single-photon source and detector measurement-chain and traceability anchor." }, { "id": "src-nist-snspd-technology", "label": "NIST: superconductive nanowire single-photon detector technology", "organization": "NIST", "url": "https://www.nist.gov/noac/technology/quantum-optics-and-radiometry/superconductive-nanowire-single-photon-detectors", "sourceClass": "government-technology-overview", "rights": "Official link and original synthesis only; no image, device design, operating value, performance comparison, or application claim is copied into model rows.", "note": "Detector-event, optical coupling, readout, reset, dark-count, and characterization vocabulary anchor." }, { "id": "src-nist-snspd-timing-spatial", "label": "NIST: spatial dependence of SNSPD output-pulse delay", "organization": "NIST / research authors", "url": "https://www.nist.gov/publications/spatial-dependence-output-pulse-delay-niobium-nitride-nanowire-superconducting-single", "sourceClass": "government-primary-publication-metadata", "rights": "Official metadata and abstract-level scope only; no device dimensions, measurement setup, timing value, map, figure, table, or result is copied.", "note": "Timing-lineage and spatial-nonuniformity evidence anchor without producing a jitter prediction." }, { "id": "src-nist-tn1297", "label": "NIST Technical Note 1297: measurement uncertainty", "organization": "NIST", "url": "https://www.nist.gov/pml/nist-technical-note-1297", "sourceClass": "government-metrology-guidance", "rights": "Official guidance link and original synthesis only; no controlled text is mirrored.", "note": "Measurand, standard uncertainty, combined uncertainty, expanded uncertainty, and reporting-lineage anchor." } ] }