{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TTM3OY6QS6BMUVSZFAUDWTSLRV","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":"da2e40f6dffe458302c86c4fc7ab8ef7b591edcf0a0464285dc916494640b201","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-21T01:07:29Z","title_canon_sha256":"5db164e2dc10f3dd2eec18f85b4420fc4c4f47103925346c2383106964c52726"},"schema_version":"1.0","source":{"id":"1208.4154","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.4154","created_at":"2026-05-18T03:30:25Z"},{"alias_kind":"arxiv_version","alias_value":"1208.4154v1","created_at":"2026-05-18T03:30:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.4154","created_at":"2026-05-18T03:30:25Z"},{"alias_kind":"pith_short_12","alias_value":"TTM3OY6QS6BM","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TTM3OY6QS6BMUVSZ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TTM3OY6Q","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:34c69ed11f2f930e5385c40b2e5a9fb876973e8aef120a06614b671159c4f435","target":"graph","created_at":"2026-05-18T03:30:25Z","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 demonstrate three and four input multiports in a three dimensional glass platform, fabricated using the femtosecond laser direct-write technique. Hong-Ou-Mandel (HOM) interference is observed and a full quantum characterisation is performed, obtaining two photon correlation matrices for all combinations of input and output ports. For the three-port case, the quantum visibilities are accurately predicted solely from measurement of the classical coupling ratios.","authors_text":"Graham D. Marshall, Michael Delanty, Michael J. Withford, M. J. Steel, Simon Gross, Thomas Meany","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-21T01:07:29Z","title":"Non-classical interference in integrated 3D multiports"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.4154","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":"sha256:9f679c95a7efc9291ad51083ba87129f540d42a36a4681568f6a6b3c855de421","target":"record","created_at":"2026-05-18T03:30:25Z","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":"da2e40f6dffe458302c86c4fc7ab8ef7b591edcf0a0464285dc916494640b201","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-21T01:07:29Z","title_canon_sha256":"5db164e2dc10f3dd2eec18f85b4420fc4c4f47103925346c2383106964c52726"},"schema_version":"1.0","source":{"id":"1208.4154","kind":"arxiv","version":1}},"canonical_sha256":"9cd9b763d09782ca565928283b4e4b8d7298c59acfe9777f4455070fe19d8165","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cd9b763d09782ca565928283b4e4b8d7298c59acfe9777f4455070fe19d8165","first_computed_at":"2026-05-18T03:30:25.698049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:25.698049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x9VoqoimFkBryrhpnWtD5rSDPl7mzb8zE2/RQhmXLdFelLh0yswZXkklOGrnf+ejabPO0tflyS9sBBdHi35fCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:25.698640Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.4154","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f679c95a7efc9291ad51083ba87129f540d42a36a4681568f6a6b3c855de421","sha256:34c69ed11f2f930e5385c40b2e5a9fb876973e8aef120a06614b671159c4f435"],"state_sha256":"fa5ac444b1f7ea29899c3b5cdfffc55e50f0c77c0eec35e8c817078c87b5c9ef"}