{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:YAJAJXK23YSOLV6WRTBK4V27KE","short_pith_number":"pith:YAJAJXK2","schema_version":"1.0","canonical_sha256":"c01204dd5ade24e5d7d68cc2ae575f51300a62a47e79d65b85d3c7ff43ffffe7","source":{"kind":"arxiv","id":"2404.08609","version":2},"attestation_state":"computed","paper":{"title":"An ultra-broadband photonic-chip-based traveling-wave parametric amplifier","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Alberto Nardi, Alisa Davydova, Johann Riemensberger, Mikhail Churaev, Nikolai Kuznetsov, Paul Seidler, Tobias J. Kippenberg","submitted_at":"2024-04-12T17:15:14Z","abstract_excerpt":"Optical amplification, crucial for modern communication and data center interconnects, primarily relies on erbium-doped fiber amplifiers (EDFAs) to enhance signals without distortion. While EDFAs were historically decisive for the introduction of dense wavelength-division multiplexing, they only cover a portion of the low-loss spectrum of optical fibers. Pioneering work on optical traveling-wave parametric amplifiers (TWPAs) utilizing intrinsic third-order optical nonlinearity has led to demonstrations of increased channel capacity and performance. TWPAs are unidirectional, offer high gain, an"},"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":"2404.08609","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-12T17:15:14Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"88bd868c1b5470ebf50ed6c7238971ec412c4fb8afde25ba397768db3f425bf7","abstract_canon_sha256":"04e5a4880d2f43a1d8a81448732f2f9e606fdccf126f6828f12a41a94a43fca7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:29:49.069829Z","signature_b64":"pvtJZorTHM+1pixGS5aHtNZUoc5Ke4Xe7Add1mUQOBSVyJg65P+47yoK1zktICBeJNtQtLoYh4M8N7pyWfWnAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c01204dd5ade24e5d7d68cc2ae575f51300a62a47e79d65b85d3c7ff43ffffe7","last_reissued_at":"2026-07-05T09:29:49.069361Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:29:49.069361Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An ultra-broadband photonic-chip-based traveling-wave parametric amplifier","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Alberto Nardi, Alisa Davydova, Johann Riemensberger, Mikhail Churaev, Nikolai Kuznetsov, Paul Seidler, Tobias J. Kippenberg","submitted_at":"2024-04-12T17:15:14Z","abstract_excerpt":"Optical amplification, crucial for modern communication and data center interconnects, primarily relies on erbium-doped fiber amplifiers (EDFAs) to enhance signals without distortion. While EDFAs were historically decisive for the introduction of dense wavelength-division multiplexing, they only cover a portion of the low-loss spectrum of optical fibers. Pioneering work on optical traveling-wave parametric amplifiers (TWPAs) utilizing intrinsic third-order optical nonlinearity has led to demonstrations of increased channel capacity and performance. TWPAs are unidirectional, offer high gain, an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08609","kind":"arxiv","version":2},"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/2404.08609/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":"2404.08609","created_at":"2026-07-05T09:29:49.069418+00:00"},{"alias_kind":"arxiv_version","alias_value":"2404.08609v2","created_at":"2026-07-05T09:29:49.069418+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.08609","created_at":"2026-07-05T09:29:49.069418+00:00"},{"alias_kind":"pith_short_12","alias_value":"YAJAJXK23YSO","created_at":"2026-07-05T09:29:49.069418+00:00"},{"alias_kind":"pith_short_16","alias_value":"YAJAJXK23YSOLV6W","created_at":"2026-07-05T09:29:49.069418+00:00"},{"alias_kind":"pith_short_8","alias_value":"YAJAJXK2","created_at":"2026-07-05T09:29:49.069418+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/YAJAJXK23YSOLV6WRTBK4V27KE","json":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE.json","graph_json":"https://pith.science/api/pith-number/YAJAJXK23YSOLV6WRTBK4V27KE/graph.json","events_json":"https://pith.science/api/pith-number/YAJAJXK23YSOLV6WRTBK4V27KE/events.json","paper":"https://pith.science/paper/YAJAJXK2"},"agent_actions":{"view_html":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE","download_json":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE.json","view_paper":"https://pith.science/paper/YAJAJXK2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2404.08609&json=true","fetch_graph":"https://pith.science/api/pith-number/YAJAJXK23YSOLV6WRTBK4V27KE/graph.json","fetch_events":"https://pith.science/api/pith-number/YAJAJXK23YSOLV6WRTBK4V27KE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE/action/storage_attestation","attest_author":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE/action/author_attestation","sign_citation":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE/action/citation_signature","submit_replication":"https://pith.science/pith/YAJAJXK23YSOLV6WRTBK4V27KE/action/replication_record"}},"created_at":"2026-07-05T09:29:49.069418+00:00","updated_at":"2026-07-05T09:29:49.069418+00:00"}