{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:44RWE5IDVOLMBPFLQNNYFUXMDS","short_pith_number":"pith:44RWE5ID","canonical_record":{"source":{"id":"1509.01227","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-03T19:26:11Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"d07df5a2364ffb92c9b3c23656ff53082e86a39f0c8862c82abaa8290869f0d1","abstract_canon_sha256":"3237c6a0934fb835d3c218af19630a5a3f01a6599ba10b84c8c0fffb518eab2e"},"schema_version":"1.0"},"canonical_sha256":"e723627503ab96c0bcab835b82d2ec1c9542431d31febc881d150c0fc0a707d1","source":{"kind":"arxiv","id":"1509.01227","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.01227","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"arxiv_version","alias_value":"1509.01227v1","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.01227","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"pith_short_12","alias_value":"44RWE5IDVOLM","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44RWE5IDVOLMBPFL","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44RWE5ID","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:44RWE5IDVOLMBPFLQNNYFUXMDS","target":"record","payload":{"canonical_record":{"source":{"id":"1509.01227","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-03T19:26:11Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"d07df5a2364ffb92c9b3c23656ff53082e86a39f0c8862c82abaa8290869f0d1","abstract_canon_sha256":"3237c6a0934fb835d3c218af19630a5a3f01a6599ba10b84c8c0fffb518eab2e"},"schema_version":"1.0"},"canonical_sha256":"e723627503ab96c0bcab835b82d2ec1c9542431d31febc881d150c0fc0a707d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:33:59.219062Z","signature_b64":"wjQdQFnOI4/yWi5f3Jr6g6bXtCrUKYY7J4RIsRKEJjJ9m2CIqY2a9RouX5ZJVB3DCwhFMZUapTsGeGjPydSEBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e723627503ab96c0bcab835b82d2ec1c9542431d31febc881d150c0fc0a707d1","last_reissued_at":"2026-05-18T01:33:59.218527Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:33:59.218527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.01227","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":"2026-05-18T01:33:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Eh9gErF4wRkkmdth74q+zQHgH+dA7qH5/mDUEWk6qPMJc5EHzO64o6BeIvySXmcr+IbtKjCwSfXXFcplmMO6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:49:43.493610Z"},"content_sha256":"7dd21dece682799b740420f525b70d520787467856cb6a77d0e3fac2edfcd63d","schema_version":"1.0","event_id":"sha256:7dd21dece682799b740420f525b70d520787467856cb6a77d0e3fac2edfcd63d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:44RWE5IDVOLMBPFLQNNYFUXMDS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Phase Imaging using Spatial Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.optics","authors_text":"Chien-Hung Lu, Jason W. Fleischer, Matthew Reichert, Xiaohang Sun","submitted_at":"2015-09-03T19:26:11Z","abstract_excerpt":"Entangled photons have the remarkable ability to be more sensitive to signal and less sensitive to noise than classical light. Joint photons can sample an object collectively, resulting in faster phase accumulation and higher spatial resolution, while common components of noise can be subtracted. Even more, they can accomplish this while physically separate, due to the nonlocal properties of quantum mechanics. Indeed, nearly all quantum optics experiments rely on this separation, using individual point detectors that are scanned to measure coincidence counts and correlations. Scanning, however"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.01227","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":"2026-05-18T01:33:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tzNvMueCIkY5fGO3kZzixOU5PXLTRVxdAWJ+ZX+5Kww22O5TvD+C1xLxrxqBuu38hfJ++Ya6/iDcXPB4Zwt/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:49:43.493946Z"},"content_sha256":"a069acee72966b8f759609552454aa334553e712369bcbcbd60de8993b8ddf2c","schema_version":"1.0","event_id":"sha256:a069acee72966b8f759609552454aa334553e712369bcbcbd60de8993b8ddf2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/bundle.json","state_url":"https://pith.science/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/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":"2026-05-28T00:49:43Z","links":{"resolver":"https://pith.science/pith/44RWE5IDVOLMBPFLQNNYFUXMDS","bundle":"https://pith.science/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/bundle.json","state":"https://pith.science/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44RWE5IDVOLMBPFLQNNYFUXMDS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:44RWE5IDVOLMBPFLQNNYFUXMDS","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":"3237c6a0934fb835d3c218af19630a5a3f01a6599ba10b84c8c0fffb518eab2e","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-03T19:26:11Z","title_canon_sha256":"d07df5a2364ffb92c9b3c23656ff53082e86a39f0c8862c82abaa8290869f0d1"},"schema_version":"1.0","source":{"id":"1509.01227","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.01227","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"arxiv_version","alias_value":"1509.01227v1","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.01227","created_at":"2026-05-18T01:33:59Z"},{"alias_kind":"pith_short_12","alias_value":"44RWE5IDVOLM","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44RWE5IDVOLMBPFL","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44RWE5ID","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:a069acee72966b8f759609552454aa334553e712369bcbcbd60de8993b8ddf2c","target":"graph","created_at":"2026-05-18T01:33:59Z","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":"Entangled photons have the remarkable ability to be more sensitive to signal and less sensitive to noise than classical light. Joint photons can sample an object collectively, resulting in faster phase accumulation and higher spatial resolution, while common components of noise can be subtracted. Even more, they can accomplish this while physically separate, due to the nonlocal properties of quantum mechanics. Indeed, nearly all quantum optics experiments rely on this separation, using individual point detectors that are scanned to measure coincidence counts and correlations. Scanning, however","authors_text":"Chien-Hung Lu, Jason W. Fleischer, Matthew Reichert, Xiaohang Sun","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-03T19:26:11Z","title":"Quantum Phase Imaging using Spatial Entanglement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.01227","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":"sha256:7dd21dece682799b740420f525b70d520787467856cb6a77d0e3fac2edfcd63d","target":"record","created_at":"2026-05-18T01:33:59Z","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":"3237c6a0934fb835d3c218af19630a5a3f01a6599ba10b84c8c0fffb518eab2e","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-03T19:26:11Z","title_canon_sha256":"d07df5a2364ffb92c9b3c23656ff53082e86a39f0c8862c82abaa8290869f0d1"},"schema_version":"1.0","source":{"id":"1509.01227","kind":"arxiv","version":1}},"canonical_sha256":"e723627503ab96c0bcab835b82d2ec1c9542431d31febc881d150c0fc0a707d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e723627503ab96c0bcab835b82d2ec1c9542431d31febc881d150c0fc0a707d1","first_computed_at":"2026-05-18T01:33:59.218527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:33:59.218527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wjQdQFnOI4/yWi5f3Jr6g6bXtCrUKYY7J4RIsRKEJjJ9m2CIqY2a9RouX5ZJVB3DCwhFMZUapTsGeGjPydSEBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:33:59.219062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.01227","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dd21dece682799b740420f525b70d520787467856cb6a77d0e3fac2edfcd63d","sha256:a069acee72966b8f759609552454aa334553e712369bcbcbd60de8993b8ddf2c"],"state_sha256":"90c992dd2d2163690c39cce8a61e33a902c81e7917c251c86ceb9964a5a265fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T/2sK6D0lTwxZDrn1/NXXXSGNmLNGcKwci2TcZdRiHK/lIFPaQR86OBTdAT4BnOqUH2RGBr6WF7q8J36J4B5Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:49:43.495871Z","bundle_sha256":"c58e5cd2f3ffeb81b6367ccaf0127634e588b65e8c03c8360d63fab0c17df8e1"}}