{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:ZEX2VM35DTPHSHMOSLQWRLFV5S","short_pith_number":"pith:ZEX2VM35","schema_version":"1.0","canonical_sha256":"c92faab37d1cde791d8e92e168acb5ec9c7bf9e0fa68685ecaea3e8f0b925620","source":{"kind":"arxiv","id":"physics/0601055","version":1},"attestation_state":"computed","paper":{"title":"Negative-Index Metamaterials: Second-Harmonic Generation, Manley-Rowe Relations and Parametric Amplification","license":"","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.optics","authors_text":"A. K. Popov, Vladimir M. Shalaev","submitted_at":"2006-01-10T00:10:59Z","abstract_excerpt":"Second harmonic generation and optical parametric amplification in negative-index metamaterials (NIMs) are studied. The opposite directions of the wave vector and the Poynting vector in NIMs results in a \"backward\" phase-matching condition, causing significant changes in the Manley-Rowe relations and spatial distributions of the coupled field intensities. It is shown that absorption in NIMs can be compensated by backward optical parametric amplification. The possibility of distributed-feedback parametric oscillation with no cavity has been demonstrated. The feasibility of the generation of ent"},"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":"physics/0601055","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.optics","submitted_at":"2006-01-10T00:10:59Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"14a622faa5f9d19de51c953005f065f82ca017b5434648d26a0977b603021ae7","abstract_canon_sha256":"d96a8c087a23f8df1e8b84ceb80ce8aad5b5bf46ca72ea784a8ef9b9f720174f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:02:23.652805Z","signature_b64":"UTMb0unJfhMix7KhBaf9eRJq9LsG66mECHAO+CshFR2M7c1F1mZXhRev3dYeH8LalcgrWvOqAWUFk3i3ZU/eBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c92faab37d1cde791d8e92e168acb5ec9c7bf9e0fa68685ecaea3e8f0b925620","last_reissued_at":"2026-07-04T17:02:23.652444Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:02:23.652444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Negative-Index Metamaterials: Second-Harmonic Generation, Manley-Rowe Relations and Parametric Amplification","license":"","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.optics","authors_text":"A. K. Popov, Vladimir M. Shalaev","submitted_at":"2006-01-10T00:10:59Z","abstract_excerpt":"Second harmonic generation and optical parametric amplification in negative-index metamaterials (NIMs) are studied. The opposite directions of the wave vector and the Poynting vector in NIMs results in a \"backward\" phase-matching condition, causing significant changes in the Manley-Rowe relations and spatial distributions of the coupled field intensities. It is shown that absorption in NIMs can be compensated by backward optical parametric amplification. The possibility of distributed-feedback parametric oscillation with no cavity has been demonstrated. The feasibility of the generation of ent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0601055","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/physics/0601055/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":"physics/0601055","created_at":"2026-07-04T17:02:23.652502+00:00"},{"alias_kind":"arxiv_version","alias_value":"physics/0601055v1","created_at":"2026-07-04T17:02:23.652502+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0601055","created_at":"2026-07-04T17:02:23.652502+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZEX2VM35DTPH","created_at":"2026-07-04T17:02:23.652502+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZEX2VM35DTPHSHMO","created_at":"2026-07-04T17:02:23.652502+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZEX2VM35","created_at":"2026-07-04T17:02:23.652502+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/ZEX2VM35DTPHSHMOSLQWRLFV5S","json":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S.json","graph_json":"https://pith.science/api/pith-number/ZEX2VM35DTPHSHMOSLQWRLFV5S/graph.json","events_json":"https://pith.science/api/pith-number/ZEX2VM35DTPHSHMOSLQWRLFV5S/events.json","paper":"https://pith.science/paper/ZEX2VM35"},"agent_actions":{"view_html":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S","download_json":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S.json","view_paper":"https://pith.science/paper/ZEX2VM35","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=physics/0601055&json=true","fetch_graph":"https://pith.science/api/pith-number/ZEX2VM35DTPHSHMOSLQWRLFV5S/graph.json","fetch_events":"https://pith.science/api/pith-number/ZEX2VM35DTPHSHMOSLQWRLFV5S/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S/action/storage_attestation","attest_author":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S/action/author_attestation","sign_citation":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S/action/citation_signature","submit_replication":"https://pith.science/pith/ZEX2VM35DTPHSHMOSLQWRLFV5S/action/replication_record"}},"created_at":"2026-07-04T17:02:23.652502+00:00","updated_at":"2026-07-04T17:02:23.652502+00:00"}