{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:B6U4AZFGX2TFTOTLX3RZSYMP5S","short_pith_number":"pith:B6U4AZFG","canonical_record":{"source":{"id":"2109.03715","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-08T15:22:46Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"f5a7106aed5d9e6f867f0ad33d35c5e986310e3e87055a381202ba750b222257","abstract_canon_sha256":"0bff9427d04a29245fd3826514e3ceea83c44453629f368fd8707c3623309732"},"schema_version":"1.0"},"canonical_sha256":"0fa9c064a6bea659ba6bbee399618fec918f1b96bf29974c6883bea71445868b","source":{"kind":"arxiv","id":"2109.03715","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.03715","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"arxiv_version","alias_value":"2109.03715v2","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.03715","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_12","alias_value":"B6U4AZFGX2TF","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_16","alias_value":"B6U4AZFGX2TFTOTL","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_8","alias_value":"B6U4AZFG","created_at":"2026-07-05T03:28:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:B6U4AZFGX2TFTOTLX3RZSYMP5S","target":"record","payload":{"canonical_record":{"source":{"id":"2109.03715","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-08T15:22:46Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"f5a7106aed5d9e6f867f0ad33d35c5e986310e3e87055a381202ba750b222257","abstract_canon_sha256":"0bff9427d04a29245fd3826514e3ceea83c44453629f368fd8707c3623309732"},"schema_version":"1.0"},"canonical_sha256":"0fa9c064a6bea659ba6bbee399618fec918f1b96bf29974c6883bea71445868b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:28:40.930210Z","signature_b64":"t6b+6loHZtJMW5uBZdeXBT9PvpKwpZx/eLC0Rqle62OI25yylUt3/Qka7sLY3Jx9i8Rd+flfO5MHQT4tuPviCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0fa9c064a6bea659ba6bbee399618fec918f1b96bf29974c6883bea71445868b","last_reissued_at":"2026-07-05T03:28:40.929742Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:28:40.929742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.03715","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":"2026-07-05T03:28:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FkQDyv/KGCisLOiKI5NSU4GC4rgCXJpdw3jebqRp+FTCU5/HMmL1UjSWuiJfxig7YmXvzhYeSsDEE+KZzrsMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:36:14.734005Z"},"content_sha256":"bd36dae11c54a206fd1185c7c49183673f008f5bebce1a2f71da2cd43b6616ef","schema_version":"1.0","event_id":"sha256:bd36dae11c54a206fd1185c7c49183673f008f5bebce1a2f71da2cd43b6616ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:B6U4AZFGX2TFTOTLX3RZSYMP5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Fourier transform spectroscopy of biexciton","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Hiroya Seki, Kensuke Miyajima, Ryosuke Shimizu","submitted_at":"2021-09-08T15:22:46Z","abstract_excerpt":"Fourier transform spectroscopy with classical interferometry corresponds to the measurement of a single-photon intensity spectrum from the viewpoint of the particle nature of light. In contrast, the Fourier transform of two-photon quantum interference patterns provides the intensity spectrum of the two photons as a function of the sum or difference frequency of the constituent photons. This unique feature of quantum interferometric spectroscopy offers a different type of spectral information from the classical measurement and may prove useful for nonlinear spectroscopy with two-photon emission"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.03715","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2109.03715/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":"2026-07-05T03:28:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DJErHaPLVZDNkcjZgHwqkLdIe08Dj+hmVrjCosQbtQGc8D/1FFU1ANTT5r7MJ1XLpd+9/2JoFhl7+7Z23RlWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:36:14.734528Z"},"content_sha256":"2d4b604b8c5ae834703fd58773702e70ee27eea0a80a8c8133dc0ae2aeaf2a11","schema_version":"1.0","event_id":"sha256:2d4b604b8c5ae834703fd58773702e70ee27eea0a80a8c8133dc0ae2aeaf2a11"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/bundle.json","state_url":"https://pith.science/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/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":"2026-07-07T04:36:14Z","links":{"resolver":"https://pith.science/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S","bundle":"https://pith.science/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/bundle.json","state":"https://pith.science/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B6U4AZFGX2TFTOTLX3RZSYMP5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:B6U4AZFGX2TFTOTLX3RZSYMP5S","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":"0bff9427d04a29245fd3826514e3ceea83c44453629f368fd8707c3623309732","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-08T15:22:46Z","title_canon_sha256":"f5a7106aed5d9e6f867f0ad33d35c5e986310e3e87055a381202ba750b222257"},"schema_version":"1.0","source":{"id":"2109.03715","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.03715","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"arxiv_version","alias_value":"2109.03715v2","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.03715","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_12","alias_value":"B6U4AZFGX2TF","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_16","alias_value":"B6U4AZFGX2TFTOTL","created_at":"2026-07-05T03:28:40Z"},{"alias_kind":"pith_short_8","alias_value":"B6U4AZFG","created_at":"2026-07-05T03:28:40Z"}],"graph_snapshots":[{"event_id":"sha256:2d4b604b8c5ae834703fd58773702e70ee27eea0a80a8c8133dc0ae2aeaf2a11","target":"graph","created_at":"2026-07-05T03:28:40Z","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/2109.03715/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fourier transform spectroscopy with classical interferometry corresponds to the measurement of a single-photon intensity spectrum from the viewpoint of the particle nature of light. In contrast, the Fourier transform of two-photon quantum interference patterns provides the intensity spectrum of the two photons as a function of the sum or difference frequency of the constituent photons. This unique feature of quantum interferometric spectroscopy offers a different type of spectral information from the classical measurement and may prove useful for nonlinear spectroscopy with two-photon emission","authors_text":"Hiroya Seki, Kensuke Miyajima, Ryosuke Shimizu","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-08T15:22:46Z","title":"Quantum Fourier transform spectroscopy of biexciton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.03715","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:bd36dae11c54a206fd1185c7c49183673f008f5bebce1a2f71da2cd43b6616ef","target":"record","created_at":"2026-07-05T03:28:40Z","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":"0bff9427d04a29245fd3826514e3ceea83c44453629f368fd8707c3623309732","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-08T15:22:46Z","title_canon_sha256":"f5a7106aed5d9e6f867f0ad33d35c5e986310e3e87055a381202ba750b222257"},"schema_version":"1.0","source":{"id":"2109.03715","kind":"arxiv","version":2}},"canonical_sha256":"0fa9c064a6bea659ba6bbee399618fec918f1b96bf29974c6883bea71445868b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0fa9c064a6bea659ba6bbee399618fec918f1b96bf29974c6883bea71445868b","first_computed_at":"2026-07-05T03:28:40.929742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:28:40.929742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t6b+6loHZtJMW5uBZdeXBT9PvpKwpZx/eLC0Rqle62OI25yylUt3/Qka7sLY3Jx9i8Rd+flfO5MHQT4tuPviCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:28:40.930210Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.03715","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd36dae11c54a206fd1185c7c49183673f008f5bebce1a2f71da2cd43b6616ef","sha256:2d4b604b8c5ae834703fd58773702e70ee27eea0a80a8c8133dc0ae2aeaf2a11"],"state_sha256":"63b3252d126700f7e90fbc6204911d117d0991628f3dcebc0a6b8aa07dc5e46f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4XT7wx2Be2xiMlghyF88bzy+2nG8tE323ORbjw8Q+YUVNesmgWl3iiq3OjY3TbauPEhRDOu9ghXfvVYpdooDAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:36:14.740030Z","bundle_sha256":"0e59d8b4db359a56b82f0363ec0986ff58b6af107b7739a9ef82ee870b876dbc"}}