{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:FUF3QN3ZAG4CTEOPNYJQBGDO5Z","short_pith_number":"pith:FUF3QN3Z","canonical_record":{"source":{"id":"quant-ph/0408092","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-13T16:07:31Z","cross_cats_sorted":[],"title_canon_sha256":"23becc85b0c2920b72ff84a89bbda57e572b3dc4a1a9699f90514f5f76dc879e","abstract_canon_sha256":"e6ca0192f92aeff0e9afec0215f641ae8cc54dbc9cf7c32d4bd617046be17258"},"schema_version":"1.0"},"canonical_sha256":"2d0bb8377901b82991cf6e1300986eee5fd129f1275b950894c4bb086806a2d9","source":{"kind":"arxiv","id":"quant-ph/0408092","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0408092","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0408092v3","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0408092","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"FUF3QN3ZAG4C","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_16","alias_value":"FUF3QN3ZAG4CTEOP","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_8","alias_value":"FUF3QN3Z","created_at":"2026-07-04T15:03:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:FUF3QN3ZAG4CTEOPNYJQBGDO5Z","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0408092","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-13T16:07:31Z","cross_cats_sorted":[],"title_canon_sha256":"23becc85b0c2920b72ff84a89bbda57e572b3dc4a1a9699f90514f5f76dc879e","abstract_canon_sha256":"e6ca0192f92aeff0e9afec0215f641ae8cc54dbc9cf7c32d4bd617046be17258"},"schema_version":"1.0"},"canonical_sha256":"2d0bb8377901b82991cf6e1300986eee5fd129f1275b950894c4bb086806a2d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:03:46.564624Z","signature_b64":"HABGE3omuNWGdT5umAdZj5Cy9X2Od3P2wtR5iGxEcdZis1Zk0lWRAQ+z3YE/Te5eEQgDLLauK9EY4NtNocfECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d0bb8377901b82991cf6e1300986eee5fd129f1275b950894c4bb086806a2d9","last_reissued_at":"2026-07-04T15:03:46.564282Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:03:46.564282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0408092","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zwYFK1nJ97++o2GnsisCVvrR1gageMtDYavJv8rHyFTPqBPCWIITatSfxz2sxEqSKU6hvCPWpQu5D6bYr9IqDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:53:47.002654Z"},"content_sha256":"39267e70194133a7fa78504d4ae8157aa9360bf0baabc685bb700d41bc357eb4","schema_version":"1.0","event_id":"sha256:39267e70194133a7fa78504d4ae8157aa9360bf0baabc685bb700d41bc357eb4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:FUF3QN3ZAG4CTEOPNYJQBGDO5Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photon-bunching measurement after 2x25km of standard optical fibers","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Beveratos, H. de Riedmatten, H. Zbinden, M. Halder, N. Gisin, S. Tanzilli","submitted_at":"2004-08-13T16:07:31Z","abstract_excerpt":"To show the feasibility of a long distance partial Bell-State measurement, a Hong-Ou-Mandel experiment with coherent photons is reported. Pairs of degenerate photons at telecom wavelength are created by parametric down conversion in a periodically poled lithium niobate waveguide. The photon pairs are separated in a beam-splitter and transmitted via two fibers of 25km. The wave-packets are relatively delayed and recombined on a second beam-splitter, forming a large Mach-Zehnder interferometer. Coincidence counts between the photons at the two output modes are registered. The main challenge cons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0408092","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/quant-ph/0408092/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wIbglN76NW+LURJlql+Dald3i5mIa3sRAljs9pCzY/vf5Ovv3mFI8QxYNGAFpT/Q/s/+1DkJQYmLV/d4FpzoAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:53:47.003515Z"},"content_sha256":"787bcee07bca5d9178134e2283fc66aaa974ec0a5f01c0ac0c9d62fa913e871d","schema_version":"1.0","event_id":"sha256:787bcee07bca5d9178134e2283fc66aaa974ec0a5f01c0ac0c9d62fa913e871d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/bundle.json","state_url":"https://pith.science/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/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":"2026-08-04T08:53:47Z","links":{"resolver":"https://pith.science/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z","bundle":"https://pith.science/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/bundle.json","state":"https://pith.science/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FUF3QN3ZAG4CTEOPNYJQBGDO5Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:FUF3QN3ZAG4CTEOPNYJQBGDO5Z","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":"e6ca0192f92aeff0e9afec0215f641ae8cc54dbc9cf7c32d4bd617046be17258","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-13T16:07:31Z","title_canon_sha256":"23becc85b0c2920b72ff84a89bbda57e572b3dc4a1a9699f90514f5f76dc879e"},"schema_version":"1.0","source":{"id":"quant-ph/0408092","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0408092","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0408092v3","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0408092","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"FUF3QN3ZAG4C","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_16","alias_value":"FUF3QN3ZAG4CTEOP","created_at":"2026-07-04T15:03:46Z"},{"alias_kind":"pith_short_8","alias_value":"FUF3QN3Z","created_at":"2026-07-04T15:03:46Z"}],"graph_snapshots":[{"event_id":"sha256:787bcee07bca5d9178134e2283fc66aaa974ec0a5f01c0ac0c9d62fa913e871d","target":"graph","created_at":"2026-07-04T15:03:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/quant-ph/0408092/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To show the feasibility of a long distance partial Bell-State measurement, a Hong-Ou-Mandel experiment with coherent photons is reported. Pairs of degenerate photons at telecom wavelength are created by parametric down conversion in a periodically poled lithium niobate waveguide. The photon pairs are separated in a beam-splitter and transmitted via two fibers of 25km. The wave-packets are relatively delayed and recombined on a second beam-splitter, forming a large Mach-Zehnder interferometer. Coincidence counts between the photons at the two output modes are registered. The main challenge cons","authors_text":"A. Beveratos, H. de Riedmatten, H. Zbinden, M. Halder, N. Gisin, S. Tanzilli","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2004-08-13T16:07:31Z","title":"Photon-bunching measurement after 2x25km of standard optical fibers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0408092","kind":"arxiv","version":3},"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":"sha256:39267e70194133a7fa78504d4ae8157aa9360bf0baabc685bb700d41bc357eb4","target":"record","created_at":"2026-07-04T15:03:46Z","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":"e6ca0192f92aeff0e9afec0215f641ae8cc54dbc9cf7c32d4bd617046be17258","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-13T16:07:31Z","title_canon_sha256":"23becc85b0c2920b72ff84a89bbda57e572b3dc4a1a9699f90514f5f76dc879e"},"schema_version":"1.0","source":{"id":"quant-ph/0408092","kind":"arxiv","version":3}},"canonical_sha256":"2d0bb8377901b82991cf6e1300986eee5fd129f1275b950894c4bb086806a2d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d0bb8377901b82991cf6e1300986eee5fd129f1275b950894c4bb086806a2d9","first_computed_at":"2026-07-04T15:03:46.564282Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:03:46.564282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HABGE3omuNWGdT5umAdZj5Cy9X2Od3P2wtR5iGxEcdZis1Zk0lWRAQ+z3YE/Te5eEQgDLLauK9EY4NtNocfECQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:03:46.564624Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0408092","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39267e70194133a7fa78504d4ae8157aa9360bf0baabc685bb700d41bc357eb4","sha256:787bcee07bca5d9178134e2283fc66aaa974ec0a5f01c0ac0c9d62fa913e871d"],"state_sha256":"75d66ffe8c24b0354bfe3f8e6adee62d7b19b0ab5e52023db1d3a142ea85e59a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LVLvU4wEGqADAkSHkYBVxm1ANUc0SIOX8UkornEmb85y/FTY/XQnz1+5/GamPO0/BrLYvarEI1uRDPkTCAm3CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:53:47.010424Z","bundle_sha256":"bf222be27f3bc7ac4612e5142f89351c90c532c5f8824f68412f597a5c3a54b9"}}