{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:U3FPXML5IGUMD6C6KYDVA33BOF","short_pith_number":"pith:U3FPXML5","schema_version":"1.0","canonical_sha256":"a6cafbb17d41a8c1f85e5607506f61716d882771e79a2efd3094aae9841537da","source":{"kind":"arxiv","id":"1510.08014","version":2},"attestation_state":"computed","paper":{"title":"Enhancement of Two-photon Absorption in Quantum Wells for Extremely Nondegenerate Photon Pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David J. Hagan, Eric W. Van Stryland, Himansu S. Pattanaik, Jacob B. Khurgin, Matthew Reichert","submitted_at":"2015-10-27T18:06:16Z","abstract_excerpt":"We recently demonstrated orders of magnitude enhancement of two-photon absorption (2PA) in direct gap semiconductors due to intermediate state resonance enhancement for photons of very different energies. It can be expected that further enhancement of nondegenerate 2PA will be observed in quantum wells (QWs) since the intraband matrix elements do not vanish near the band center as they do in the bulk, and the density of states in QWs is larger near the band edge. Here we present a perturbation-theory based theoretical description of nondegenerate 2PA in semiconductor QWs, where both frequency "},"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":"1510.08014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-27T18:06:16Z","cross_cats_sorted":[],"title_canon_sha256":"14cebf731a6bfa6696daeab62f081f3532d7148cf384bdd4282832a015157fe4","abstract_canon_sha256":"bf1b925acca6c291d11f8d9fb2e9b3a1a6010a1f5d7b72454152f27d2afdd557"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:17.738743Z","signature_b64":"O0SIOm2aHydnpQD8q9FrZvnN6oyh5zZZLidvagRJRMva+pfi7ndwJ1N0koylB/KearXAri/LRnDDuf77uvkYBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6cafbb17d41a8c1f85e5607506f61716d882771e79a2efd3094aae9841537da","last_reissued_at":"2026-05-18T01:14:17.738105Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:17.738105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Enhancement of Two-photon Absorption in Quantum Wells for Extremely Nondegenerate Photon Pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David J. Hagan, Eric W. Van Stryland, Himansu S. Pattanaik, Jacob B. Khurgin, Matthew Reichert","submitted_at":"2015-10-27T18:06:16Z","abstract_excerpt":"We recently demonstrated orders of magnitude enhancement of two-photon absorption (2PA) in direct gap semiconductors due to intermediate state resonance enhancement for photons of very different energies. It can be expected that further enhancement of nondegenerate 2PA will be observed in quantum wells (QWs) since the intraband matrix elements do not vanish near the band center as they do in the bulk, and the density of states in QWs is larger near the band edge. Here we present a perturbation-theory based theoretical description of nondegenerate 2PA in semiconductor QWs, where both frequency "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08014","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":""},"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":"1510.08014","created_at":"2026-05-18T01:14:17.738194+00:00"},{"alias_kind":"arxiv_version","alias_value":"1510.08014v2","created_at":"2026-05-18T01:14:17.738194+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08014","created_at":"2026-05-18T01:14:17.738194+00:00"},{"alias_kind":"pith_short_12","alias_value":"U3FPXML5IGUM","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_16","alias_value":"U3FPXML5IGUMD6C6","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_8","alias_value":"U3FPXML5","created_at":"2026-05-18T12:29:44.643036+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/U3FPXML5IGUMD6C6KYDVA33BOF","json":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF.json","graph_json":"https://pith.science/api/pith-number/U3FPXML5IGUMD6C6KYDVA33BOF/graph.json","events_json":"https://pith.science/api/pith-number/U3FPXML5IGUMD6C6KYDVA33BOF/events.json","paper":"https://pith.science/paper/U3FPXML5"},"agent_actions":{"view_html":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF","download_json":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF.json","view_paper":"https://pith.science/paper/U3FPXML5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1510.08014&json=true","fetch_graph":"https://pith.science/api/pith-number/U3FPXML5IGUMD6C6KYDVA33BOF/graph.json","fetch_events":"https://pith.science/api/pith-number/U3FPXML5IGUMD6C6KYDVA33BOF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF/action/storage_attestation","attest_author":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF/action/author_attestation","sign_citation":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF/action/citation_signature","submit_replication":"https://pith.science/pith/U3FPXML5IGUMD6C6KYDVA33BOF/action/replication_record"}},"created_at":"2026-05-18T01:14:17.738194+00:00","updated_at":"2026-05-18T01:14:17.738194+00:00"}