{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:S4COZYNP6N23ROECQHDI6GCQJF","short_pith_number":"pith:S4COZYNP","canonical_record":{"source":{"id":"1303.6814","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-27T12:51:40Z","cross_cats_sorted":[],"title_canon_sha256":"87591afd3e52fdd9666ba148793bac5809a8c511037a7274e30de107a9e68b10","abstract_canon_sha256":"165c73e799690e6959122ec066663151903ff5bbe8c8a2c09b38a5bf82a4bc1b"},"schema_version":"1.0"},"canonical_sha256":"9704ece1aff375b8b88281c68f185049412f8b2a66b0e4788af99d3a87c71433","source":{"kind":"arxiv","id":"1303.6814","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.6814","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"arxiv_version","alias_value":"1303.6814v1","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.6814","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"pith_short_12","alias_value":"S4COZYNP6N23","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"S4COZYNP6N23ROEC","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"S4COZYNP","created_at":"2026-05-18T12:27:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:S4COZYNP6N23ROECQHDI6GCQJF","target":"record","payload":{"canonical_record":{"source":{"id":"1303.6814","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-27T12:51:40Z","cross_cats_sorted":[],"title_canon_sha256":"87591afd3e52fdd9666ba148793bac5809a8c511037a7274e30de107a9e68b10","abstract_canon_sha256":"165c73e799690e6959122ec066663151903ff5bbe8c8a2c09b38a5bf82a4bc1b"},"schema_version":"1.0"},"canonical_sha256":"9704ece1aff375b8b88281c68f185049412f8b2a66b0e4788af99d3a87c71433","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:42.482776Z","signature_b64":"AptdiJpHlq27QMb+kLMNdlx24dgbm9pj2pGNmf9lG8PqGthsqvGEW8NPY6SKTxhRLWaNpNlO//fg22JuCVQnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9704ece1aff375b8b88281c68f185049412f8b2a66b0e4788af99d3a87c71433","last_reissued_at":"2026-05-18T02:41:42.482037Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:42.482037Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.6814","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:41:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ABEspbl7zNYrDkSXKFs5s9zlB5O0DoizeSsCw3jNBTxwR7yHTEsOCQ8jEFrjwiozeSj5l80icz/8qA8MEYHNBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:35:49.703698Z"},"content_sha256":"28ebe6f8a1ae56fa91e5f0a6a6c9e86e402822dfd662eb386493610d670f34bc","schema_version":"1.0","event_id":"sha256:28ebe6f8a1ae56fa91e5f0a6a6c9e86e402822dfd662eb386493610d670f34bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:S4COZYNP6N23ROECQHDI6GCQJF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SWAP test and the Hong-Ou-Mandel effect are equivalent","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Juan Carlos Garcia-Escartin, Pedro Chamorro-Posada","submitted_at":"2013-03-27T12:51:40Z","abstract_excerpt":"We show that the Hong-Ou-Mandel effect from quantum optics is equivalent to the SWAP test, a quantum information primitive which compares two arbitrary states. We first derive a destructive SWAP test that doesn't need the ancillary qubit that appears in the usual quantum circuit. Then, we study the Hong-Ou-Mandel effect for two photons meeting at a beam splitter and prove it is, in fact, an optical implementation of the destructive SWAP test. This result offers both an interesting simple realization of a powerful quantum information primitive and an alternative way to understand and analyse th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.6814","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:41:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VUhKTza2a72KpPNOcb5rnkRBL433hBMoHKUcOHn0qsMZdcl0Ha5xDF5xjNjKPsN3E3HSGurdeoudma7n7OI0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:35:49.704039Z"},"content_sha256":"d442ca173436f58d1b12d382f9cd4e7f6be2ad7ce222ebc4a919ef62c33017bb","schema_version":"1.0","event_id":"sha256:d442ca173436f58d1b12d382f9cd4e7f6be2ad7ce222ebc4a919ef62c33017bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4COZYNP6N23ROECQHDI6GCQJF/bundle.json","state_url":"https://pith.science/pith/S4COZYNP6N23ROECQHDI6GCQJF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4COZYNP6N23ROECQHDI6GCQJF/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T17:35:49Z","links":{"resolver":"https://pith.science/pith/S4COZYNP6N23ROECQHDI6GCQJF","bundle":"https://pith.science/pith/S4COZYNP6N23ROECQHDI6GCQJF/bundle.json","state":"https://pith.science/pith/S4COZYNP6N23ROECQHDI6GCQJF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4COZYNP6N23ROECQHDI6GCQJF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:S4COZYNP6N23ROECQHDI6GCQJF","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"165c73e799690e6959122ec066663151903ff5bbe8c8a2c09b38a5bf82a4bc1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-27T12:51:40Z","title_canon_sha256":"87591afd3e52fdd9666ba148793bac5809a8c511037a7274e30de107a9e68b10"},"schema_version":"1.0","source":{"id":"1303.6814","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.6814","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"arxiv_version","alias_value":"1303.6814v1","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.6814","created_at":"2026-05-18T02:41:42Z"},{"alias_kind":"pith_short_12","alias_value":"S4COZYNP6N23","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"S4COZYNP6N23ROEC","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"S4COZYNP","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:d442ca173436f58d1b12d382f9cd4e7f6be2ad7ce222ebc4a919ef62c33017bb","target":"graph","created_at":"2026-05-18T02:41:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We show that the Hong-Ou-Mandel effect from quantum optics is equivalent to the SWAP test, a quantum information primitive which compares two arbitrary states. We first derive a destructive SWAP test that doesn't need the ancillary qubit that appears in the usual quantum circuit. Then, we study the Hong-Ou-Mandel effect for two photons meeting at a beam splitter and prove it is, in fact, an optical implementation of the destructive SWAP test. This result offers both an interesting simple realization of a powerful quantum information primitive and an alternative way to understand and analyse th","authors_text":"Juan Carlos Garcia-Escartin, Pedro Chamorro-Posada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-27T12:51:40Z","title":"The SWAP test and the Hong-Ou-Mandel effect are equivalent"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.6814","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:28ebe6f8a1ae56fa91e5f0a6a6c9e86e402822dfd662eb386493610d670f34bc","target":"record","created_at":"2026-05-18T02:41:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"165c73e799690e6959122ec066663151903ff5bbe8c8a2c09b38a5bf82a4bc1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-27T12:51:40Z","title_canon_sha256":"87591afd3e52fdd9666ba148793bac5809a8c511037a7274e30de107a9e68b10"},"schema_version":"1.0","source":{"id":"1303.6814","kind":"arxiv","version":1}},"canonical_sha256":"9704ece1aff375b8b88281c68f185049412f8b2a66b0e4788af99d3a87c71433","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9704ece1aff375b8b88281c68f185049412f8b2a66b0e4788af99d3a87c71433","first_computed_at":"2026-05-18T02:41:42.482037Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:41:42.482037Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AptdiJpHlq27QMb+kLMNdlx24dgbm9pj2pGNmf9lG8PqGthsqvGEW8NPY6SKTxhRLWaNpNlO//fg22JuCVQnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:41:42.482776Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.6814","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28ebe6f8a1ae56fa91e5f0a6a6c9e86e402822dfd662eb386493610d670f34bc","sha256:d442ca173436f58d1b12d382f9cd4e7f6be2ad7ce222ebc4a919ef62c33017bb"],"state_sha256":"f4e9d3c8c02a883881773aab35443a837faad0c3fdf472e08cbf1ec06451b46d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q6WvXEaSoBCRubblbAgv+EnuwaMC+/JSVzLuSSpU/OfLJ4/Xc9uJHkKPBSD62NvLHExl5greCr4oqo7BJrfdBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:35:49.706266Z","bundle_sha256":"66a1795c6a976b15292d6174e3db8adbbb5568c50017f16e2a1451e32d224e9f"}}