{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PT7JFYHRV3FZ5DDGXWUWAJDQCZ","short_pith_number":"pith:PT7JFYHR","canonical_record":{"source":{"id":"1507.08623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-07-30T18:45:23Z","cross_cats_sorted":[],"title_canon_sha256":"e9e3a97bd6921a56db167024ac2eb8aef9564d6a46cd71662e07e5bdbf3d14db","abstract_canon_sha256":"be7b51368242bcca6d722a1ffc23f983ad346ec8dcdd5dcf1ad3b5c6991a3640"},"schema_version":"1.0"},"canonical_sha256":"7cfe92e0f1aecb9e8c66bda960247016447ad2e8b2f1d65f7e054481ad6243f4","source":{"kind":"arxiv","id":"1507.08623","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08623","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08623v1","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08623","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"pith_short_12","alias_value":"PT7JFYHRV3FZ","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PT7JFYHRV3FZ5DDG","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PT7JFYHR","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PT7JFYHRV3FZ5DDGXWUWAJDQCZ","target":"record","payload":{"canonical_record":{"source":{"id":"1507.08623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-07-30T18:45:23Z","cross_cats_sorted":[],"title_canon_sha256":"e9e3a97bd6921a56db167024ac2eb8aef9564d6a46cd71662e07e5bdbf3d14db","abstract_canon_sha256":"be7b51368242bcca6d722a1ffc23f983ad346ec8dcdd5dcf1ad3b5c6991a3640"},"schema_version":"1.0"},"canonical_sha256":"7cfe92e0f1aecb9e8c66bda960247016447ad2e8b2f1d65f7e054481ad6243f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:05.987775Z","signature_b64":"0aoncqnogFyUwXo+KYv0Nwqqc/Aq3FFpx2ICPouUTF1gpm1Ni+BhZGNgcWqfgUATdRTYeQatcW57+6of1qXIBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7cfe92e0f1aecb9e8c66bda960247016447ad2e8b2f1d65f7e054481ad6243f4","last_reissued_at":"2026-05-18T01:36:05.987290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:05.987290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.08623","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":"2026-05-18T01:36:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4CF1aaTy4KlQBZ3e2RPATM35iuwx5AowmevrIlAghQiBgA7mquSxM/xoK5u/1KQghf/5n/g23AqnUgLiFv7XAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:33:39.297067Z"},"content_sha256":"c7e2c6124d121c49244d81dea0e68fe861449560baf943d5019216e242873ed2","schema_version":"1.0","event_id":"sha256:c7e2c6124d121c49244d81dea0e68fe861449560baf943d5019216e242873ed2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PT7JFYHRV3FZ5DDGXWUWAJDQCZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two photon amplitude of partially coherent partially entangled electromagnetic fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Miguel Angel Olvera, Sonja Franke-Arnold","submitted_at":"2015-07-30T18:45:23Z","abstract_excerpt":"The development of efficient protocols for pure and mixed states preparation is challenging task. Most of the theory of quantum information applications has been developed for fully coherent or completely incoherent light. However, in many situations of interest partially coherent light has been proved to be a more robust model of radiation. \nIn this paper the underpinning theory of two photon amplitude functions for down-converted fields with partially coherent pump beams is investigated. By using the generalised Siegert relations and the coherent mode representation of the cross spectral den"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08623","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":"2026-05-18T01:36:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wdEqaNxY2vf/p9MYoMMcm0vNHLXMRI1xVEt/rRgh81cy6NeqPnWyA94efDI7saNHb8v4wfhV9wimglYKVc8/Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:33:39.297870Z"},"content_sha256":"d3a4ad72d1b44c5de84e22e08af54b3d6aa47fcf35cf28aef6716d36c4a110a0","schema_version":"1.0","event_id":"sha256:d3a4ad72d1b44c5de84e22e08af54b3d6aa47fcf35cf28aef6716d36c4a110a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/bundle.json","state_url":"https://pith.science/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/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":"2026-05-31T16:33:39Z","links":{"resolver":"https://pith.science/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ","bundle":"https://pith.science/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/bundle.json","state":"https://pith.science/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PT7JFYHRV3FZ5DDGXWUWAJDQCZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PT7JFYHRV3FZ5DDGXWUWAJDQCZ","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":"be7b51368242bcca6d722a1ffc23f983ad346ec8dcdd5dcf1ad3b5c6991a3640","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-07-30T18:45:23Z","title_canon_sha256":"e9e3a97bd6921a56db167024ac2eb8aef9564d6a46cd71662e07e5bdbf3d14db"},"schema_version":"1.0","source":{"id":"1507.08623","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08623","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08623v1","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08623","created_at":"2026-05-18T01:36:05Z"},{"alias_kind":"pith_short_12","alias_value":"PT7JFYHRV3FZ","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PT7JFYHRV3FZ5DDG","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PT7JFYHR","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:d3a4ad72d1b44c5de84e22e08af54b3d6aa47fcf35cf28aef6716d36c4a110a0","target":"graph","created_at":"2026-05-18T01:36:05Z","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":"The development of efficient protocols for pure and mixed states preparation is challenging task. Most of the theory of quantum information applications has been developed for fully coherent or completely incoherent light. However, in many situations of interest partially coherent light has been proved to be a more robust model of radiation. \nIn this paper the underpinning theory of two photon amplitude functions for down-converted fields with partially coherent pump beams is investigated. By using the generalised Siegert relations and the coherent mode representation of the cross spectral den","authors_text":"Miguel Angel Olvera, Sonja Franke-Arnold","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-07-30T18:45:23Z","title":"Two photon amplitude of partially coherent partially entangled electromagnetic fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08623","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:c7e2c6124d121c49244d81dea0e68fe861449560baf943d5019216e242873ed2","target":"record","created_at":"2026-05-18T01:36:05Z","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":"be7b51368242bcca6d722a1ffc23f983ad346ec8dcdd5dcf1ad3b5c6991a3640","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-07-30T18:45:23Z","title_canon_sha256":"e9e3a97bd6921a56db167024ac2eb8aef9564d6a46cd71662e07e5bdbf3d14db"},"schema_version":"1.0","source":{"id":"1507.08623","kind":"arxiv","version":1}},"canonical_sha256":"7cfe92e0f1aecb9e8c66bda960247016447ad2e8b2f1d65f7e054481ad6243f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cfe92e0f1aecb9e8c66bda960247016447ad2e8b2f1d65f7e054481ad6243f4","first_computed_at":"2026-05-18T01:36:05.987290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:05.987290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0aoncqnogFyUwXo+KYv0Nwqqc/Aq3FFpx2ICPouUTF1gpm1Ni+BhZGNgcWqfgUATdRTYeQatcW57+6of1qXIBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:05.987775Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.08623","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7e2c6124d121c49244d81dea0e68fe861449560baf943d5019216e242873ed2","sha256:d3a4ad72d1b44c5de84e22e08af54b3d6aa47fcf35cf28aef6716d36c4a110a0"],"state_sha256":"f3903c103e7ef1ef425362b72eb3fb1b8962035f81143a6db503290bc56fa7f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lni4WdD5qgi+GTczLaj+mAszHoJwmIo1tu5rR89TLQOpXk9yFnkWdr/rwMpHFMjmr5VGCWODvBHMta7ubT14AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:33:39.302422Z","bundle_sha256":"2fc44df1fb7f2a65499892c805b15fdc44bf811cf7d5ad4e093ff797ab3259c1"}}