{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:7Q3TNLCAL2SBH26HEQ2PKPQDF2","short_pith_number":"pith:7Q3TNLCA","schema_version":"1.0","canonical_sha256":"fc3736ac405ea413ebc72434f53e032eb339684f0d3a7eb42b6c687adf10f2d8","source":{"kind":"arxiv","id":"1412.5192","version":1},"attestation_state":"computed","paper":{"title":"Giant Narrowband Twin-Beam Generation along the Pump Energy Propagation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Angela M. Perez, Gerd Leuchs, Kirill Yu. Spasibko, Maria V. Chekhova, Olga V. Tikhonova, Polina R. Sharapova","submitted_at":"2014-12-16T21:02:53Z","abstract_excerpt":"Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. While transverse walk-off can be eliminated by proper medium engineering, longitudinal walk-off is harder to avoid. In particular, ultrafast twin- beam generation via pulsed parametric down-conversion (PDC) and four-wave mixing (FWM) is only possible in short crystals or fibres or in double-path schemes. Here we show that in high-gain PDC, one can overcome the destructive role of both effects and even turn them into useful tools for shaping the emiss"},"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":"1412.5192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-12-16T21:02:53Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"725bb3e65b9afe03a4061913155354fcb9962e442e8f607922a8463a1793ffb9","abstract_canon_sha256":"c07ca6124ed624c66d193cd891558616973fb29bb8dffa6e5b2880f365d784a1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:14.839542Z","signature_b64":"PfFOys8R9L/Lgi5QbdBaH4nCOkq4o+WC21TjRGNajMBDF7MLJdKmjUlT6vPSEXE+DHIRR8GXfVykdFM4PlziAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc3736ac405ea413ebc72434f53e032eb339684f0d3a7eb42b6c687adf10f2d8","last_reissued_at":"2026-05-18T01:18:14.838971Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:14.838971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Giant Narrowband Twin-Beam Generation along the Pump Energy Propagation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Angela M. Perez, Gerd Leuchs, Kirill Yu. Spasibko, Maria V. Chekhova, Olga V. Tikhonova, Polina R. Sharapova","submitted_at":"2014-12-16T21:02:53Z","abstract_excerpt":"Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. While transverse walk-off can be eliminated by proper medium engineering, longitudinal walk-off is harder to avoid. In particular, ultrafast twin- beam generation via pulsed parametric down-conversion (PDC) and four-wave mixing (FWM) is only possible in short crystals or fibres or in double-path schemes. Here we show that in high-gain PDC, one can overcome the destructive role of both effects and even turn them into useful tools for shaping the emiss"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.5192","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":""},"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":"1412.5192","created_at":"2026-05-18T01:18:14.839056+00:00"},{"alias_kind":"arxiv_version","alias_value":"1412.5192v1","created_at":"2026-05-18T01:18:14.839056+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.5192","created_at":"2026-05-18T01:18:14.839056+00:00"},{"alias_kind":"pith_short_12","alias_value":"7Q3TNLCAL2SB","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_16","alias_value":"7Q3TNLCAL2SBH26H","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_8","alias_value":"7Q3TNLCA","created_at":"2026-05-18T12:28:19.803747+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/7Q3TNLCAL2SBH26HEQ2PKPQDF2","json":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2.json","graph_json":"https://pith.science/api/pith-number/7Q3TNLCAL2SBH26HEQ2PKPQDF2/graph.json","events_json":"https://pith.science/api/pith-number/7Q3TNLCAL2SBH26HEQ2PKPQDF2/events.json","paper":"https://pith.science/paper/7Q3TNLCA"},"agent_actions":{"view_html":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2","download_json":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2.json","view_paper":"https://pith.science/paper/7Q3TNLCA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1412.5192&json=true","fetch_graph":"https://pith.science/api/pith-number/7Q3TNLCAL2SBH26HEQ2PKPQDF2/graph.json","fetch_events":"https://pith.science/api/pith-number/7Q3TNLCAL2SBH26HEQ2PKPQDF2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2/action/storage_attestation","attest_author":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2/action/author_attestation","sign_citation":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2/action/citation_signature","submit_replication":"https://pith.science/pith/7Q3TNLCAL2SBH26HEQ2PKPQDF2/action/replication_record"}},"created_at":"2026-05-18T01:18:14.839056+00:00","updated_at":"2026-05-18T01:18:14.839056+00:00"}