{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:VRYTV5IOJCQ44ORHKHINAOMNZH","short_pith_number":"pith:VRYTV5IO","canonical_record":{"source":{"id":"1310.4297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-16T08:29:27Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"f6310c8817725234d16dd23d7532f741ccab7c620c2610f51a91c441f0bdefaf","abstract_canon_sha256":"d2a7c7d5a71185fd3756ca993caff8956cc1c841249f5d438bb9b788f35ee953"},"schema_version":"1.0"},"canonical_sha256":"ac713af50e48a1ce3a2751d0d0398dc9dc655fa576627f50855b5a16e3cb339d","source":{"kind":"arxiv","id":"1310.4297","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.4297","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"arxiv_version","alias_value":"1310.4297v1","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.4297","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"pith_short_12","alias_value":"VRYTV5IOJCQ4","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VRYTV5IOJCQ44ORH","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VRYTV5IO","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:VRYTV5IOJCQ44ORHKHINAOMNZH","target":"record","payload":{"canonical_record":{"source":{"id":"1310.4297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-16T08:29:27Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"f6310c8817725234d16dd23d7532f741ccab7c620c2610f51a91c441f0bdefaf","abstract_canon_sha256":"d2a7c7d5a71185fd3756ca993caff8956cc1c841249f5d438bb9b788f35ee953"},"schema_version":"1.0"},"canonical_sha256":"ac713af50e48a1ce3a2751d0d0398dc9dc655fa576627f50855b5a16e3cb339d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:10:23.255924Z","signature_b64":"t7XjacoH3+/Znk2WBZv7ZPtbu8H7Wlj2N0jOtsJyUyhD+ItZRPP/bLT8A8B6cTS1yoy1w9YPErB3QteEBNcCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ac713af50e48a1ce3a2751d0d0398dc9dc655fa576627f50855b5a16e3cb339d","last_reissued_at":"2026-05-18T03:10:23.255071Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:10:23.255071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.4297","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":"2026-05-18T03:10:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EnQt1p91jH6vEUmfOlGZSyOGY87XKHMpt3BBckqtQj3NLOW9HYG6/KLug7D9R4nBbUXxp9nigylz/c/VDRNdAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:37:37.356148Z"},"content_sha256":"93b1caf649a10262d7f2bf6705dfdcc5b807907d9db2dc17b915cffb2f2a7eb3","schema_version":"1.0","event_id":"sha256:93b1caf649a10262d7f2bf6705dfdcc5b807907d9db2dc17b915cffb2f2a7eb3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:VRYTV5IOJCQ44ORHKHINAOMNZH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced two-photon absorption using true thermal light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Andreas Jechow, Axel Heuer, Henning Kurzke, Michael Seefeldt, Ralf Menzel","submitted_at":"2013-10-16T08:29:27Z","abstract_excerpt":"Two-photon excited fluorescence (TPEF) is a standard technique in modern microscopy but still affected by photo-damage of the probe. It was proposed that TPEF can be enhanced by using entangled photons, but has proven to be challenging. Recently it was shown that some features of entangled photons can be mimicked with thermal light, which finds application in ghost imaging, sub-wavelength lithography and metrology. Here, we utilize true thermal light from a super-luminescence diode to demonstrate enhanced TPEF compared to coherent light using two common fluorophores and luminescent quantum dot"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.4297","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":"2026-05-18T03:10:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BVvEADC/ieiaF0bO9KFvlP9JLwvYHXt/yB9Au8Yd8OQOilM7d48Ecf/LvQYphArZCJDYmFvTxXM+YUlwZemzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:37:37.356497Z"},"content_sha256":"1aa3bfbf17e930426f5ab7b5018fe4f73ad33acb792b437ee5afcbf0e9068543","schema_version":"1.0","event_id":"sha256:1aa3bfbf17e930426f5ab7b5018fe4f73ad33acb792b437ee5afcbf0e9068543"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/bundle.json","state_url":"https://pith.science/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/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":"2026-06-08T14:37:37Z","links":{"resolver":"https://pith.science/pith/VRYTV5IOJCQ44ORHKHINAOMNZH","bundle":"https://pith.science/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/bundle.json","state":"https://pith.science/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VRYTV5IOJCQ44ORHKHINAOMNZH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VRYTV5IOJCQ44ORHKHINAOMNZH","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":"d2a7c7d5a71185fd3756ca993caff8956cc1c841249f5d438bb9b788f35ee953","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-16T08:29:27Z","title_canon_sha256":"f6310c8817725234d16dd23d7532f741ccab7c620c2610f51a91c441f0bdefaf"},"schema_version":"1.0","source":{"id":"1310.4297","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.4297","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"arxiv_version","alias_value":"1310.4297v1","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.4297","created_at":"2026-05-18T03:10:23Z"},{"alias_kind":"pith_short_12","alias_value":"VRYTV5IOJCQ4","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VRYTV5IOJCQ44ORH","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VRYTV5IO","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:1aa3bfbf17e930426f5ab7b5018fe4f73ad33acb792b437ee5afcbf0e9068543","target":"graph","created_at":"2026-05-18T03:10:23Z","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":"Two-photon excited fluorescence (TPEF) is a standard technique in modern microscopy but still affected by photo-damage of the probe. It was proposed that TPEF can be enhanced by using entangled photons, but has proven to be challenging. Recently it was shown that some features of entangled photons can be mimicked with thermal light, which finds application in ghost imaging, sub-wavelength lithography and metrology. Here, we utilize true thermal light from a super-luminescence diode to demonstrate enhanced TPEF compared to coherent light using two common fluorophores and luminescent quantum dot","authors_text":"Andreas Jechow, Axel Heuer, Henning Kurzke, Michael Seefeldt, Ralf Menzel","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-16T08:29:27Z","title":"Enhanced two-photon absorption using true thermal light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.4297","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":"sha256:93b1caf649a10262d7f2bf6705dfdcc5b807907d9db2dc17b915cffb2f2a7eb3","target":"record","created_at":"2026-05-18T03:10:23Z","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":"d2a7c7d5a71185fd3756ca993caff8956cc1c841249f5d438bb9b788f35ee953","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-16T08:29:27Z","title_canon_sha256":"f6310c8817725234d16dd23d7532f741ccab7c620c2610f51a91c441f0bdefaf"},"schema_version":"1.0","source":{"id":"1310.4297","kind":"arxiv","version":1}},"canonical_sha256":"ac713af50e48a1ce3a2751d0d0398dc9dc655fa576627f50855b5a16e3cb339d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac713af50e48a1ce3a2751d0d0398dc9dc655fa576627f50855b5a16e3cb339d","first_computed_at":"2026-05-18T03:10:23.255071Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:10:23.255071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t7XjacoH3+/Znk2WBZv7ZPtbu8H7Wlj2N0jOtsJyUyhD+ItZRPP/bLT8A8B6cTS1yoy1w9YPErB3QteEBNcCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:10:23.255924Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.4297","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93b1caf649a10262d7f2bf6705dfdcc5b807907d9db2dc17b915cffb2f2a7eb3","sha256:1aa3bfbf17e930426f5ab7b5018fe4f73ad33acb792b437ee5afcbf0e9068543"],"state_sha256":"efd30ba8dd7a8ff74bb729a374053943ff3901de073d0c4431d2beb2fd515ac6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qAAXQsd6sUwOkLkx0fgd+PJmoBK7fbfAKnZTPIHhZXzqZzphONnQ5eVUYJWoTend4ZbZqqn47ZY9QfuW7aTwDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T14:37:37.358265Z","bundle_sha256":"1b8ae7a908c16e17cfc39f9bc8a1eb4e21d9fccde61e64a23e3ac3e9c26bdc72"}}