{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:IB7LSL2SCOG3BQ3Y352ZVR4QH5","short_pith_number":"pith:IB7LSL2S","canonical_record":{"source":{"id":"0906.3537","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-18T21:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"9e501a4f3dabe0c535b62bbd619355bbbbfb8039d4d9f0ef46fe73e59e4933d3","abstract_canon_sha256":"06c285a88a1a7b7366155be4443893303fbb0d5cee0f65626eadeb5efedf3ad3"},"schema_version":"1.0"},"canonical_sha256":"407eb92f52138db0c378df759ac7903f44fb9a99b8224d387a23d297181796d8","source":{"kind":"arxiv","id":"0906.3537","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.3537","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"0906.3537v1","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.3537","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"IB7LSL2SCOG3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IB7LSL2SCOG3BQ3Y","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IB7LSL2S","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:IB7LSL2SCOG3BQ3Y352ZVR4QH5","target":"record","payload":{"canonical_record":{"source":{"id":"0906.3537","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-18T21:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"9e501a4f3dabe0c535b62bbd619355bbbbfb8039d4d9f0ef46fe73e59e4933d3","abstract_canon_sha256":"06c285a88a1a7b7366155be4443893303fbb0d5cee0f65626eadeb5efedf3ad3"},"schema_version":"1.0"},"canonical_sha256":"407eb92f52138db0c378df759ac7903f44fb9a99b8224d387a23d297181796d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:18.956345Z","signature_b64":"J95DyBPbkGAwhRFiPMmv9WTztVhy+AHHkTx7Ywn9/BzmTj+PlieWvF9tJSPI35EEXA55VFbCM2fFxQQjTXp2Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"407eb92f52138db0c378df759ac7903f44fb9a99b8224d387a23d297181796d8","last_reissued_at":"2026-05-18T02:13:18.955727Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:18.955727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.3537","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":"2026-05-18T02:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w2BI4YCglhwGGt1NgvbRkO+rJlB2vbfVNKcxBnZLdRPX+d6QfCkDryz+sRLisM9NJ/Cbjca0Gk+lqsXvNDLKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T18:39:02.757796Z"},"content_sha256":"31ff6d19612fc33f80106353c346cf763278d450e0051ff86a487dd7edf509ae","schema_version":"1.0","event_id":"sha256:31ff6d19612fc33f80106353c346cf763278d450e0051ff86a487dd7edf509ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:IB7LSL2SCOG3BQ3Y352ZVR4QH5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modulation and Measurement of Time-Energy Entangled Photons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chih-Sung Chuu, Chinmay Belthangady, G.Y. Yin, S.E. Harris, Shengwang Du","submitted_at":"2009-06-18T21:43:10Z","abstract_excerpt":"We describe a proof-of-principal experiment demonstrating a Fourier technique for measuring the shape of biphoton wavepackets. The technique is based on the use of synchronously driven fast modulators and slow (integrating) detectors."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.3537","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":"2026-05-18T02:13:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9uBAphJGQzHpaOKySwbyyAjLW/ci76rgXoIiYNgJwjEf5BimsgnFGlFstQnYJZ3BpbsGSgZVb5SIn1dVZWBVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T18:39:02.758157Z"},"content_sha256":"d49f886397ca7de87edc9f2067a773aef9788efe98bb7a379d7127263c7b1d0e","schema_version":"1.0","event_id":"sha256:d49f886397ca7de87edc9f2067a773aef9788efe98bb7a379d7127263c7b1d0e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/bundle.json","state_url":"https://pith.science/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/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":"2026-06-01T18:39:02Z","links":{"resolver":"https://pith.science/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5","bundle":"https://pith.science/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/bundle.json","state":"https://pith.science/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IB7LSL2SCOG3BQ3Y352ZVR4QH5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:IB7LSL2SCOG3BQ3Y352ZVR4QH5","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":"06c285a88a1a7b7366155be4443893303fbb0d5cee0f65626eadeb5efedf3ad3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-18T21:43:10Z","title_canon_sha256":"9e501a4f3dabe0c535b62bbd619355bbbbfb8039d4d9f0ef46fe73e59e4933d3"},"schema_version":"1.0","source":{"id":"0906.3537","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.3537","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"arxiv_version","alias_value":"0906.3537v1","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.3537","created_at":"2026-05-18T02:13:18Z"},{"alias_kind":"pith_short_12","alias_value":"IB7LSL2SCOG3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"IB7LSL2SCOG3BQ3Y","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"IB7LSL2S","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:d49f886397ca7de87edc9f2067a773aef9788efe98bb7a379d7127263c7b1d0e","target":"graph","created_at":"2026-05-18T02:13:18Z","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 describe a proof-of-principal experiment demonstrating a Fourier technique for measuring the shape of biphoton wavepackets. The technique is based on the use of synchronously driven fast modulators and slow (integrating) detectors.","authors_text":"Chih-Sung Chuu, Chinmay Belthangady, G.Y. Yin, S.E. Harris, Shengwang Du","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-18T21:43:10Z","title":"Modulation and Measurement of Time-Energy Entangled Photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.3537","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":"sha256:31ff6d19612fc33f80106353c346cf763278d450e0051ff86a487dd7edf509ae","target":"record","created_at":"2026-05-18T02:13:18Z","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":"06c285a88a1a7b7366155be4443893303fbb0d5cee0f65626eadeb5efedf3ad3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-18T21:43:10Z","title_canon_sha256":"9e501a4f3dabe0c535b62bbd619355bbbbfb8039d4d9f0ef46fe73e59e4933d3"},"schema_version":"1.0","source":{"id":"0906.3537","kind":"arxiv","version":1}},"canonical_sha256":"407eb92f52138db0c378df759ac7903f44fb9a99b8224d387a23d297181796d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"407eb92f52138db0c378df759ac7903f44fb9a99b8224d387a23d297181796d8","first_computed_at":"2026-05-18T02:13:18.955727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:18.955727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J95DyBPbkGAwhRFiPMmv9WTztVhy+AHHkTx7Ywn9/BzmTj+PlieWvF9tJSPI35EEXA55VFbCM2fFxQQjTXp2Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:18.956345Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.3537","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31ff6d19612fc33f80106353c346cf763278d450e0051ff86a487dd7edf509ae","sha256:d49f886397ca7de87edc9f2067a773aef9788efe98bb7a379d7127263c7b1d0e"],"state_sha256":"e43b4464d5c3b2482bca7315c471ac81d039ff2748617f13b33fe13b0da9c1f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c+DKA2Uwa+/7RJ53bZ6cw8F1i155MMSD9ebG6gc5psyh/hfUCv23QmK2UF+umuOc0mkld6qr/JonDC6kPGydBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T18:39:02.760138Z","bundle_sha256":"63e7beca9abb64fb4bede1606ddfa1d1f7487489da9aaa47bf179e781dfe753d"}}