{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:IKM6F2EJHEYQC6HCO6F2KRJUTZ","short_pith_number":"pith:IKM6F2EJ","canonical_record":{"source":{"id":"1403.2886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-12T11:12:06Z","cross_cats_sorted":[],"title_canon_sha256":"581eeae10eead9d87621a79fbba011e917179bbc8ae6d5d8c989650e39eead0f","abstract_canon_sha256":"43cad8a1dc34690f1514ae8b7dd76f45bf20240ca593e8ec6f92f7925bc314d8"},"schema_version":"1.0"},"canonical_sha256":"4299e2e88939310178e2778ba545349e486ef71766e3ae27bdb168cd32fa2896","source":{"kind":"arxiv","id":"1403.2886","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.2886","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"arxiv_version","alias_value":"1403.2886v2","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.2886","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"pith_short_12","alias_value":"IKM6F2EJHEYQ","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IKM6F2EJHEYQC6HC","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IKM6F2EJ","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:IKM6F2EJHEYQC6HCO6F2KRJUTZ","target":"record","payload":{"canonical_record":{"source":{"id":"1403.2886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-12T11:12:06Z","cross_cats_sorted":[],"title_canon_sha256":"581eeae10eead9d87621a79fbba011e917179bbc8ae6d5d8c989650e39eead0f","abstract_canon_sha256":"43cad8a1dc34690f1514ae8b7dd76f45bf20240ca593e8ec6f92f7925bc314d8"},"schema_version":"1.0"},"canonical_sha256":"4299e2e88939310178e2778ba545349e486ef71766e3ae27bdb168cd32fa2896","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:45:04.311201Z","signature_b64":"jBGk/QR1DH6kos7maA/WmO7wlizVISzyaUoU8calbD0yo0Ge1ImWW7L8xKbJSSmbjcVV+eLKwJ1965HL243gBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4299e2e88939310178e2778ba545349e486ef71766e3ae27bdb168cd32fa2896","last_reissued_at":"2026-05-18T02:45:04.310677Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:45:04.310677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.2886","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:45:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kODJ25JQZOEbJxolc/soI5FLQ3stCAIKhuRpbsoTO6O/HPWu8o4Nv/4DUi/mW8nAJYXXT7NCEWuhtXIDifrEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:57:28.896784Z"},"content_sha256":"e6d50ccb9edb9475ec966201cff5a7940bb5fc0883ba00448e6840dbb5e2edbf","schema_version":"1.0","event_id":"sha256:e6d50ccb9edb9475ec966201cff5a7940bb5fc0883ba00448e6840dbb5e2edbf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:IKM6F2EJHEYQC6HCO6F2KRJUTZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theory of filtered type-II PDC in the continuous-variable domain: Quantifying the impacts of filtering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andreas Christ, Christine Silberhorn, Cosmo Lupo, Matthias Reichelt, Torsten Meier","submitted_at":"2014-03-12T11:12:06Z","abstract_excerpt":"Parametric down-conversion (PDC) forms one of the basic building blocks for quantum optical experiments. However, the intrinsic multimode spectral-temporal structure of pulsed PDC often poses a severe hindrance for the direct implementation of the heralding of pure single-photon states or, for example, continuous-variable entanglement distillation experiments. To get rid of multimode effects narrowband frequency filtering is frequently applied to achieve a single-mode behavior.\n  A rigorous theoretical description to accurately describe the effects of filtering on PDC, however, is still missin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.2886","kind":"arxiv","version":2},"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":"2026-05-18T02:45:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PnirX2AM8rS172/WdhPoS+r0pyaswvx+le8nlwHQtRGB5tFvcsab12DuhBs/GtwNDbjoj2LNWootpmoCKO9+DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:57:28.897121Z"},"content_sha256":"2da50c7b899e2d7224183755f6d51a59975f2ad3488ed36dc0746354c0932e36","schema_version":"1.0","event_id":"sha256:2da50c7b899e2d7224183755f6d51a59975f2ad3488ed36dc0746354c0932e36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/bundle.json","state_url":"https://pith.science/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/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":"2026-06-01T15:57:28Z","links":{"resolver":"https://pith.science/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ","bundle":"https://pith.science/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/bundle.json","state":"https://pith.science/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IKM6F2EJHEYQC6HCO6F2KRJUTZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:IKM6F2EJHEYQC6HCO6F2KRJUTZ","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":"43cad8a1dc34690f1514ae8b7dd76f45bf20240ca593e8ec6f92f7925bc314d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-12T11:12:06Z","title_canon_sha256":"581eeae10eead9d87621a79fbba011e917179bbc8ae6d5d8c989650e39eead0f"},"schema_version":"1.0","source":{"id":"1403.2886","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.2886","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"arxiv_version","alias_value":"1403.2886v2","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.2886","created_at":"2026-05-18T02:45:04Z"},{"alias_kind":"pith_short_12","alias_value":"IKM6F2EJHEYQ","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IKM6F2EJHEYQC6HC","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IKM6F2EJ","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:2da50c7b899e2d7224183755f6d51a59975f2ad3488ed36dc0746354c0932e36","target":"graph","created_at":"2026-05-18T02:45:04Z","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":"Parametric down-conversion (PDC) forms one of the basic building blocks for quantum optical experiments. However, the intrinsic multimode spectral-temporal structure of pulsed PDC often poses a severe hindrance for the direct implementation of the heralding of pure single-photon states or, for example, continuous-variable entanglement distillation experiments. To get rid of multimode effects narrowband frequency filtering is frequently applied to achieve a single-mode behavior.\n  A rigorous theoretical description to accurately describe the effects of filtering on PDC, however, is still missin","authors_text":"Andreas Christ, Christine Silberhorn, Cosmo Lupo, Matthias Reichelt, Torsten Meier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-12T11:12:06Z","title":"Theory of filtered type-II PDC in the continuous-variable domain: Quantifying the impacts of filtering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.2886","kind":"arxiv","version":2},"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:e6d50ccb9edb9475ec966201cff5a7940bb5fc0883ba00448e6840dbb5e2edbf","target":"record","created_at":"2026-05-18T02:45:04Z","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":"43cad8a1dc34690f1514ae8b7dd76f45bf20240ca593e8ec6f92f7925bc314d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-12T11:12:06Z","title_canon_sha256":"581eeae10eead9d87621a79fbba011e917179bbc8ae6d5d8c989650e39eead0f"},"schema_version":"1.0","source":{"id":"1403.2886","kind":"arxiv","version":2}},"canonical_sha256":"4299e2e88939310178e2778ba545349e486ef71766e3ae27bdb168cd32fa2896","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4299e2e88939310178e2778ba545349e486ef71766e3ae27bdb168cd32fa2896","first_computed_at":"2026-05-18T02:45:04.310677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:45:04.310677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jBGk/QR1DH6kos7maA/WmO7wlizVISzyaUoU8calbD0yo0Ge1ImWW7L8xKbJSSmbjcVV+eLKwJ1965HL243gBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:45:04.311201Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.2886","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6d50ccb9edb9475ec966201cff5a7940bb5fc0883ba00448e6840dbb5e2edbf","sha256:2da50c7b899e2d7224183755f6d51a59975f2ad3488ed36dc0746354c0932e36"],"state_sha256":"1367e6879927f23e749560197dc9fba70f7b32a296f8dfbd788c563046a72302"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BapQ3LCA833Y+fdbyUJBU0KGySKR1jfaS+o23/ujGjeAZAqQNpnNnXCOHQKjn3iEJLCxWOowvfCX7UeNLOLDCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:57:28.898950Z","bundle_sha256":"f1e7245ea73e301b62af3e9506c82d59c230768440cccabb6376ea9512a93a19"}}