{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:ANX5QKJ2ZBVWIMFM7LUUQEOUAO","short_pith_number":"pith:ANX5QKJ2","schema_version":"1.0","canonical_sha256":"036fd8293ac86b6430acfae94811d403a8671473196d809532e20cdd7b98c50b","source":{"kind":"arxiv","id":"0706.0848","version":1},"attestation_state":"computed","paper":{"title":"Generation of different Bell states within the SPDC phase-matching bandwidth","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G. Brida, L.A. Krivitsky, M. Genovese, M.V. Chekhova","submitted_at":"2007-06-06T15:52:26Z","abstract_excerpt":"We study the frequency-angular lineshape for a phase-matched nonlinear process producing entangled states and show that there is a continuous variety of maximally-entangled states generated for different mismatch values within the natural bandwidth. Detailed considerations are made for two specific methods of polarization entanglement preparation, based on type-II spontaneous parametric down-conversion (SPDC) and on SPDC in two subsequent type-I crystals producing orthogonally polarized photon pairs. It turns out that different Bell states are produced at the center of the SPDC line and on its"},"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":"0706.0848","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2007-06-06T15:52:26Z","cross_cats_sorted":[],"title_canon_sha256":"4656d2aa1d7cafcb669f977f11d6b831884e46dd7720ebae87d13f5f148948d4","abstract_canon_sha256":"0ffa3f18fff7e4efe03448aa78e737dd2230d4e9809b4c98f16fd85e033f135d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:30.374181Z","signature_b64":"+bdJHjyJaRuEP7N3DMdc7utxO5g8c02yjLCCb2hVaIfn2Obvd2t9tsujq7rdoXVvLHHhO2g0Em/ca3LWRImlAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"036fd8293ac86b6430acfae94811d403a8671473196d809532e20cdd7b98c50b","last_reissued_at":"2026-05-18T02:16:30.373594Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:30.373594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Generation of different Bell states within the SPDC phase-matching bandwidth","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G. Brida, L.A. Krivitsky, M. Genovese, M.V. Chekhova","submitted_at":"2007-06-06T15:52:26Z","abstract_excerpt":"We study the frequency-angular lineshape for a phase-matched nonlinear process producing entangled states and show that there is a continuous variety of maximally-entangled states generated for different mismatch values within the natural bandwidth. Detailed considerations are made for two specific methods of polarization entanglement preparation, based on type-II spontaneous parametric down-conversion (SPDC) and on SPDC in two subsequent type-I crystals producing orthogonally polarized photon pairs. It turns out that different Bell states are produced at the center of the SPDC line and on its"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.0848","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":"0706.0848","created_at":"2026-05-18T02:16:30.373699+00:00"},{"alias_kind":"arxiv_version","alias_value":"0706.0848v1","created_at":"2026-05-18T02:16:30.373699+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.0848","created_at":"2026-05-18T02:16:30.373699+00:00"},{"alias_kind":"pith_short_12","alias_value":"ANX5QKJ2ZBVW","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_16","alias_value":"ANX5QKJ2ZBVWIMFM","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_8","alias_value":"ANX5QKJ2","created_at":"2026-05-18T12:25:55.427421+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/ANX5QKJ2ZBVWIMFM7LUUQEOUAO","json":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO.json","graph_json":"https://pith.science/api/pith-number/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/graph.json","events_json":"https://pith.science/api/pith-number/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/events.json","paper":"https://pith.science/paper/ANX5QKJ2"},"agent_actions":{"view_html":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO","download_json":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO.json","view_paper":"https://pith.science/paper/ANX5QKJ2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0706.0848&json=true","fetch_graph":"https://pith.science/api/pith-number/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/graph.json","fetch_events":"https://pith.science/api/pith-number/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/action/storage_attestation","attest_author":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/action/author_attestation","sign_citation":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/action/citation_signature","submit_replication":"https://pith.science/pith/ANX5QKJ2ZBVWIMFM7LUUQEOUAO/action/replication_record"}},"created_at":"2026-05-18T02:16:30.373699+00:00","updated_at":"2026-05-18T02:16:30.373699+00:00"}