{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:Z3KTFG4P2AOPG7AR4KKVENUJ4T","short_pith_number":"pith:Z3KTFG4P","schema_version":"1.0","canonical_sha256":"ced5329b8fd01cf37c11e295523689e4df69f8e318eaf4751268cfb9353762ed","source":{"kind":"arxiv","id":"1405.1939","version":3},"attestation_state":"computed","paper":{"title":"Challenging preconceptions about Bell tests with photon pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Martin, B.G. Christensen, C.C.W. Lim, H. Zbinden, J.-D. Bancal, N. Gisin, N. Sangouard, P. Sekatski, R.T. Thew, V. Caprara Vivoli","submitted_at":"2014-05-08T14:24:29Z","abstract_excerpt":"Motivated by very recent experiments, we consider a scenario \"\\`a la Bell\" in which two protagonists test the Clauser-Horne-Shimony-Holt (CHSH) inequality using a photon-pair source based on spontaneous parametric down conversion and imperfect photon detectors. The conventional wisdom says that (i) if the detectors have unit efficiency, the CHSH violation can reach its maximum quantum value $2\\sqrt{2}$. To obtain the maximal possible violation, it suffices that the source emits (ii) maximally entangled photon pairs (iii) in two well defined single modes. Through a non-perturabive calculation o"},"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":"1405.1939","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-08T14:24:29Z","cross_cats_sorted":[],"title_canon_sha256":"6c07bf9a271312235226f5785d156c028431e19a26483954d27da2c6e8ff0866","abstract_canon_sha256":"c75634e84ece3e259e67e519ac2b3a672488ecf339e06ede654628f0949089ac"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:16.272703Z","signature_b64":"oNUfM8g+nNks1WaWPlM7lj0L73edX8q23ADKMPjjF0Rc7RS8+NSOyztGIqYa/zmbsOUQB98dCO+2d1971mFeDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ced5329b8fd01cf37c11e295523689e4df69f8e318eaf4751268cfb9353762ed","last_reissued_at":"2026-05-18T01:43:16.272185Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:16.272185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Challenging preconceptions about Bell tests with photon pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Martin, B.G. Christensen, C.C.W. Lim, H. Zbinden, J.-D. Bancal, N. Gisin, N. Sangouard, P. Sekatski, R.T. Thew, V. Caprara Vivoli","submitted_at":"2014-05-08T14:24:29Z","abstract_excerpt":"Motivated by very recent experiments, we consider a scenario \"\\`a la Bell\" in which two protagonists test the Clauser-Horne-Shimony-Holt (CHSH) inequality using a photon-pair source based on spontaneous parametric down conversion and imperfect photon detectors. The conventional wisdom says that (i) if the detectors have unit efficiency, the CHSH violation can reach its maximum quantum value $2\\sqrt{2}$. To obtain the maximal possible violation, it suffices that the source emits (ii) maximally entangled photon pairs (iii) in two well defined single modes. Through a non-perturabive calculation o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.1939","kind":"arxiv","version":3},"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":"1405.1939","created_at":"2026-05-18T01:43:16.272263+00:00"},{"alias_kind":"arxiv_version","alias_value":"1405.1939v3","created_at":"2026-05-18T01:43:16.272263+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.1939","created_at":"2026-05-18T01:43:16.272263+00:00"},{"alias_kind":"pith_short_12","alias_value":"Z3KTFG4P2AOP","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_16","alias_value":"Z3KTFG4P2AOPG7AR","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_8","alias_value":"Z3KTFG4P","created_at":"2026-05-18T12:28:59.999130+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/Z3KTFG4P2AOPG7AR4KKVENUJ4T","json":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T.json","graph_json":"https://pith.science/api/pith-number/Z3KTFG4P2AOPG7AR4KKVENUJ4T/graph.json","events_json":"https://pith.science/api/pith-number/Z3KTFG4P2AOPG7AR4KKVENUJ4T/events.json","paper":"https://pith.science/paper/Z3KTFG4P"},"agent_actions":{"view_html":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T","download_json":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T.json","view_paper":"https://pith.science/paper/Z3KTFG4P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1405.1939&json=true","fetch_graph":"https://pith.science/api/pith-number/Z3KTFG4P2AOPG7AR4KKVENUJ4T/graph.json","fetch_events":"https://pith.science/api/pith-number/Z3KTFG4P2AOPG7AR4KKVENUJ4T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T/action/storage_attestation","attest_author":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T/action/author_attestation","sign_citation":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T/action/citation_signature","submit_replication":"https://pith.science/pith/Z3KTFG4P2AOPG7AR4KKVENUJ4T/action/replication_record"}},"created_at":"2026-05-18T01:43:16.272263+00:00","updated_at":"2026-05-18T01:43:16.272263+00:00"}