{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:ZJIQUNTKLTCMDLKGWYCVUDKTM6","short_pith_number":"pith:ZJIQUNTK","schema_version":"1.0","canonical_sha256":"ca510a366a5cc4c1ad46b6055a0d5367aa56dd3c6821e4994e367b28d52ede0f","source":{"kind":"arxiv","id":"2608.04684","version":1},"attestation_state":"computed","paper":{"title":"Spectral evolution of two-photon emission in microresonators","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alice Meda, Cecilia Clivati, Chiara Gionco, Davide Calonico, Erik Cerrato, Filippo Levi, Francesca Fam\\`a, Gianluca Bertaina, Ivo Pietro Degiovanni, Lorenzo Lucia, Marco Genovese, Marco Gramegna, Mario Siciliani de Cumis, Salvatore Virz\\`i, Stefano Condio, Stefano Dello Russo, Stefano Giaccari","submitted_at":"2026-08-05T10:52:08Z","abstract_excerpt":"High-Q silicon nitride microresonators are versatile sources for generating photon pairs via four-wave mixing. We investigate the spectral coherence of this process, tracking the transition from the spontaneous quantum regime to the onset of optical parametric oscillation. By combining time-correlation measurements with phase-sensitive measurements, we continuously monitor the emission linewidth as it evolves from a cavity-lifetime-limited linewidth toward the pump-linewidth scale. This characterization is essential for optimizing integrated sources for scalable quantum networks."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2608.04684","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-05T10:52:08Z","cross_cats_sorted":[],"title_canon_sha256":"c0f64f200e95c13b90f5964bfe8f0e1807f2860463c43ff5cb2ee116854083d2","abstract_canon_sha256":"1fa2e2c7ae3a2abcb7bdebe1e877fc0958c3e356249f14a95008685ca2763933"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-06T01:46:27.831732Z","signature_b64":"jf6rJGFS43lkpT3c23aqbC2ngys2pH9RGDUctPE0IixVZEvHiDvLigt6DKDdwt1UGKhCXw9Lonn+QMz6VFqLAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca510a366a5cc4c1ad46b6055a0d5367aa56dd3c6821e4994e367b28d52ede0f","last_reissued_at":"2026-08-06T01:46:27.830312Z","signature_status":"signed_v1","first_computed_at":"2026-08-06T01:46:27.830312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral evolution of two-photon emission in microresonators","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alice Meda, Cecilia Clivati, Chiara Gionco, Davide Calonico, Erik Cerrato, Filippo Levi, Francesca Fam\\`a, Gianluca Bertaina, Ivo Pietro Degiovanni, Lorenzo Lucia, Marco Genovese, Marco Gramegna, Mario Siciliani de Cumis, Salvatore Virz\\`i, Stefano Condio, Stefano Dello Russo, Stefano Giaccari","submitted_at":"2026-08-05T10:52:08Z","abstract_excerpt":"High-Q silicon nitride microresonators are versatile sources for generating photon pairs via four-wave mixing. We investigate the spectral coherence of this process, tracking the transition from the spontaneous quantum regime to the onset of optical parametric oscillation. By combining time-correlation measurements with phase-sensitive measurements, we continuously monitor the emission linewidth as it evolves from a cavity-lifetime-limited linewidth toward the pump-linewidth scale. This characterization is essential for optimizing integrated sources for scalable quantum networks."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04684","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.04684/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2608.04684","created_at":"2026-08-06T01:46:27.832158+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.04684v1","created_at":"2026-08-06T01:46:27.832158+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04684","created_at":"2026-08-06T01:46:27.832158+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZJIQUNTKLTCM","created_at":"2026-08-06T01:46:27.832158+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZJIQUNTKLTCMDLKG","created_at":"2026-08-06T01:46:27.832158+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZJIQUNTK","created_at":"2026-08-06T01:46:27.832158+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6","json":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6.json","graph_json":"https://pith.science/api/pith-number/ZJIQUNTKLTCMDLKGWYCVUDKTM6/graph.json","events_json":"https://pith.science/api/pith-number/ZJIQUNTKLTCMDLKGWYCVUDKTM6/events.json","paper":"https://pith.science/paper/ZJIQUNTK"},"agent_actions":{"view_html":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6","download_json":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6.json","view_paper":"https://pith.science/paper/ZJIQUNTK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.04684&json=true","fetch_graph":"https://pith.science/api/pith-number/ZJIQUNTKLTCMDLKGWYCVUDKTM6/graph.json","fetch_events":"https://pith.science/api/pith-number/ZJIQUNTKLTCMDLKGWYCVUDKTM6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6/action/storage_attestation","attest_author":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6/action/author_attestation","sign_citation":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6/action/citation_signature","submit_replication":"https://pith.science/pith/ZJIQUNTKLTCMDLKGWYCVUDKTM6/action/replication_record"}},"created_at":"2026-08-06T01:46:27.832158+00:00","updated_at":"2026-08-06T01:46:27.832158+00:00"}