{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:532QIEVDKMBJAXKFUEPK2HZOGE","short_pith_number":"pith:532QIEVD","schema_version":"1.0","canonical_sha256":"eef50412a35302905d45a11ead1f2e3123c7964a031a7cfa568a815a1086bf42","source":{"kind":"arxiv","id":"1502.02996","version":1},"attestation_state":"computed","paper":{"title":"Revealing Genuine Optical-Path Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Martin, F. Monteiro, H. Zbinden, J.-D. Bancal, N. Sangouard, R.T. Thew, T. Guerreiro, V. Caprara Vivoli","submitted_at":"2015-02-10T17:18:45Z","abstract_excerpt":"How can one detect entanglement between multiple optical paths sharing a single photon? We address this question by proposing a scalable protocol, which only uses local measurements where single photon detection is combined with small displacement operations. The resulting entanglement witness does not require post-selection, nor assumptions about the photon number in each path. Furthermore, it guarantees that entanglement lies in a subspace with at most one photon per optical path and reveals genuinely multipartite entanglement. We demonstrate its scalability and resistance to loss by perform"},"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":"1502.02996","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-10T17:18:45Z","cross_cats_sorted":[],"title_canon_sha256":"bb81a167c08c16ad00222529dd3f1f27dc795796f3491d1067a5b60be40f0c46","abstract_canon_sha256":"5e1293f3cecd34117059318e08ad3b0dda60a51927eba2727490482e5a551f14"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:00.508469Z","signature_b64":"/qjl85Vw4d25wVaq1rV+NY7eQCm7bZOR/DOJan43cvodbEof9X49mXhv23z+BfO6nPyZqguoHEwb9bWEWte1Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eef50412a35302905d45a11ead1f2e3123c7964a031a7cfa568a815a1086bf42","last_reissued_at":"2026-05-18T02:17:00.507787Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:00.507787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Revealing Genuine Optical-Path Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Martin, F. Monteiro, H. Zbinden, J.-D. Bancal, N. Sangouard, R.T. Thew, T. Guerreiro, V. Caprara Vivoli","submitted_at":"2015-02-10T17:18:45Z","abstract_excerpt":"How can one detect entanglement between multiple optical paths sharing a single photon? We address this question by proposing a scalable protocol, which only uses local measurements where single photon detection is combined with small displacement operations. The resulting entanglement witness does not require post-selection, nor assumptions about the photon number in each path. Furthermore, it guarantees that entanglement lies in a subspace with at most one photon per optical path and reveals genuinely multipartite entanglement. We demonstrate its scalability and resistance to loss by perform"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02996","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":"1502.02996","created_at":"2026-05-18T02:17:00.507889+00:00"},{"alias_kind":"arxiv_version","alias_value":"1502.02996v1","created_at":"2026-05-18T02:17:00.507889+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02996","created_at":"2026-05-18T02:17:00.507889+00:00"},{"alias_kind":"pith_short_12","alias_value":"532QIEVDKMBJ","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_16","alias_value":"532QIEVDKMBJAXKF","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_8","alias_value":"532QIEVD","created_at":"2026-05-18T12:29:05.191682+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/532QIEVDKMBJAXKFUEPK2HZOGE","json":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE.json","graph_json":"https://pith.science/api/pith-number/532QIEVDKMBJAXKFUEPK2HZOGE/graph.json","events_json":"https://pith.science/api/pith-number/532QIEVDKMBJAXKFUEPK2HZOGE/events.json","paper":"https://pith.science/paper/532QIEVD"},"agent_actions":{"view_html":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE","download_json":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE.json","view_paper":"https://pith.science/paper/532QIEVD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1502.02996&json=true","fetch_graph":"https://pith.science/api/pith-number/532QIEVDKMBJAXKFUEPK2HZOGE/graph.json","fetch_events":"https://pith.science/api/pith-number/532QIEVDKMBJAXKFUEPK2HZOGE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE/action/storage_attestation","attest_author":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE/action/author_attestation","sign_citation":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE/action/citation_signature","submit_replication":"https://pith.science/pith/532QIEVDKMBJAXKFUEPK2HZOGE/action/replication_record"}},"created_at":"2026-05-18T02:17:00.507889+00:00","updated_at":"2026-05-18T02:17:00.507889+00:00"}