{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:OHYEQGST3PUMMZTLHJGWCRPB5T","short_pith_number":"pith:OHYEQGST","canonical_record":{"source":{"id":"2107.13095","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-07-27T22:30:42Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e2310970b8f0be596f73cac852efe7fac72651f705af44e4e5cec8b2b316f0db","abstract_canon_sha256":"78557b3f652a6ebbf6e1ed958ff9b4c670d2f2587932e138053186cf30731b6b"},"schema_version":"1.0"},"canonical_sha256":"71f0481a53dbe8c6666b3a4d6145e1ecee7941483fc2a3b7b1556fa823fc7e51","source":{"kind":"arxiv","id":"2107.13095","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.13095","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"arxiv_version","alias_value":"2107.13095v2","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.13095","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_12","alias_value":"OHYEQGST3PUM","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_16","alias_value":"OHYEQGST3PUMMZTL","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_8","alias_value":"OHYEQGST","created_at":"2026-07-05T03:45:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:OHYEQGST3PUMMZTLHJGWCRPB5T","target":"record","payload":{"canonical_record":{"source":{"id":"2107.13095","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-07-27T22:30:42Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e2310970b8f0be596f73cac852efe7fac72651f705af44e4e5cec8b2b316f0db","abstract_canon_sha256":"78557b3f652a6ebbf6e1ed958ff9b4c670d2f2587932e138053186cf30731b6b"},"schema_version":"1.0"},"canonical_sha256":"71f0481a53dbe8c6666b3a4d6145e1ecee7941483fc2a3b7b1556fa823fc7e51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:45:09.904795Z","signature_b64":"c6HO2L5jUS084q9mp8+pTt5v07oR9/s5XNceTAnIBZ0PIqq3L+8yT7tjv804gWR+tQDP/tIuFM2OIuqGcksyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71f0481a53dbe8c6666b3a4d6145e1ecee7941483fc2a3b7b1556fa823fc7e51","last_reissued_at":"2026-07-05T03:45:09.904312Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:45:09.904312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.13095","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":"2026-07-05T03:45:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DhLUdBFYJ2o3HcyPWEHyX/YPsh2KVNX2W/yDBNFqSeMbgxCRl6td/rZpOE/EUjxpoxHRcjjENysV23v7U6uyDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T00:32:04.443012Z"},"content_sha256":"1479fcaf29db962c05ddac9082bbc9c67920367df1fb6328fc29496e19b93e4a","schema_version":"1.0","event_id":"sha256:1479fcaf29db962c05ddac9082bbc9c67920367df1fb6328fc29496e19b93e4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:OHYEQGST3PUMMZTLHJGWCRPB5T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ray-tracing with quantum correlated photons to image a 3D scene","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Antony Orth, Benjamin Sussman, Duncan England, Yingwen Zhang","submitted_at":"2021-07-27T22:30:42Z","abstract_excerpt":"To capture the 3D information of a scene, conventional techniques often require multiple 2D images of the scene to be captured from different perspectives. In this work we demonstrate the reconstruction of a scene's 3D information through ray-tracing using quantum correlated photon pairs. By capturing the two photons in different image planes using time-tagging cameras and taking advantage of the position, momentum and time correlation of the photons, the photons' propagation trajectory can be reconstructed. With this information on every photon pair, we were able to demonstrate refocusing, de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.13095","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/2107.13095/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":"2026-07-05T03:45:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GwnOJXHqd9dWZCfnM7SA6Nlc3IHseRuqJFk0WmLqd9CguBDQkmvJ4MZ6mSNcULsQ+0GwAFtZP43f4/X3V9abBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T00:32:04.443711Z"},"content_sha256":"a23fdd045085ad2b1db327cf5f2bb13e82fefbe83b22b1d330c7825be447703c","schema_version":"1.0","event_id":"sha256:a23fdd045085ad2b1db327cf5f2bb13e82fefbe83b22b1d330c7825be447703c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/bundle.json","state_url":"https://pith.science/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/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":"2026-08-23T00:32:04Z","links":{"resolver":"https://pith.science/pith/OHYEQGST3PUMMZTLHJGWCRPB5T","bundle":"https://pith.science/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/bundle.json","state":"https://pith.science/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OHYEQGST3PUMMZTLHJGWCRPB5T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:OHYEQGST3PUMMZTLHJGWCRPB5T","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":"78557b3f652a6ebbf6e1ed958ff9b4c670d2f2587932e138053186cf30731b6b","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-07-27T22:30:42Z","title_canon_sha256":"e2310970b8f0be596f73cac852efe7fac72651f705af44e4e5cec8b2b316f0db"},"schema_version":"1.0","source":{"id":"2107.13095","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.13095","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"arxiv_version","alias_value":"2107.13095v2","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.13095","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_12","alias_value":"OHYEQGST3PUM","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_16","alias_value":"OHYEQGST3PUMMZTL","created_at":"2026-07-05T03:45:09Z"},{"alias_kind":"pith_short_8","alias_value":"OHYEQGST","created_at":"2026-07-05T03:45:09Z"}],"graph_snapshots":[{"event_id":"sha256:a23fdd045085ad2b1db327cf5f2bb13e82fefbe83b22b1d330c7825be447703c","target":"graph","created_at":"2026-07-05T03:45:09Z","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/2107.13095/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To capture the 3D information of a scene, conventional techniques often require multiple 2D images of the scene to be captured from different perspectives. In this work we demonstrate the reconstruction of a scene's 3D information through ray-tracing using quantum correlated photon pairs. By capturing the two photons in different image planes using time-tagging cameras and taking advantage of the position, momentum and time correlation of the photons, the photons' propagation trajectory can be reconstructed. With this information on every photon pair, we were able to demonstrate refocusing, de","authors_text":"Antony Orth, Benjamin Sussman, Duncan England, Yingwen Zhang","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-07-27T22:30:42Z","title":"Ray-tracing with quantum correlated photons to image a 3D scene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.13095","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":"sha256:1479fcaf29db962c05ddac9082bbc9c67920367df1fb6328fc29496e19b93e4a","target":"record","created_at":"2026-07-05T03:45:09Z","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":"78557b3f652a6ebbf6e1ed958ff9b4c670d2f2587932e138053186cf30731b6b","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-07-27T22:30:42Z","title_canon_sha256":"e2310970b8f0be596f73cac852efe7fac72651f705af44e4e5cec8b2b316f0db"},"schema_version":"1.0","source":{"id":"2107.13095","kind":"arxiv","version":2}},"canonical_sha256":"71f0481a53dbe8c6666b3a4d6145e1ecee7941483fc2a3b7b1556fa823fc7e51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71f0481a53dbe8c6666b3a4d6145e1ecee7941483fc2a3b7b1556fa823fc7e51","first_computed_at":"2026-07-05T03:45:09.904312Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:45:09.904312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c6HO2L5jUS084q9mp8+pTt5v07oR9/s5XNceTAnIBZ0PIqq3L+8yT7tjv804gWR+tQDP/tIuFM2OIuqGcksyAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:45:09.904795Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.13095","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1479fcaf29db962c05ddac9082bbc9c67920367df1fb6328fc29496e19b93e4a","sha256:a23fdd045085ad2b1db327cf5f2bb13e82fefbe83b22b1d330c7825be447703c"],"state_sha256":"507c185b72a5b4c6843d7d33cf4674f6660df01800dac5761e302a9b743176dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JY4+Ed2BMMNdgnFGh18n2w/uzPOlYXLIbtIc7P3WLIpmpkp0d6UxwxNSWaPyAiGfsJ4bBWQwxZnu38dylpE+DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T00:32:04.446989Z","bundle_sha256":"dd442cc318e16af2f79f8761a49d81c4db600bb76e6961e357b56491a07fe669"}}