{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PAUG2WF3GWH432U4OJL2BAQIBS","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":"13bfe6401cb1b6c0a0234960175e1783e10b761f34ae810dc4a414d565e19ba4","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-16T16:18:21Z","title_canon_sha256":"a3d4b772e82197fd8d9f1ba74136a2e7d61123096ca869ae85ec7c6743f43003"},"schema_version":"1.0","source":{"id":"1503.04713","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.04713","created_at":"2026-05-18T02:23:24Z"},{"alias_kind":"arxiv_version","alias_value":"1503.04713v1","created_at":"2026-05-18T02:23:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04713","created_at":"2026-05-18T02:23:24Z"},{"alias_kind":"pith_short_12","alias_value":"PAUG2WF3GWH4","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"PAUG2WF3GWH432U4","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"PAUG2WF3","created_at":"2026-05-18T12:29:34Z"}],"graph_snapshots":[{"event_id":"sha256:37a225d24c22ca2505dde25ca32de030cfe2f79664a80a41b217fce993408182","target":"graph","created_at":"2026-05-18T02:23:24Z","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":"Retrieving the vast amount of information carried by a photon is an enduring challenge in quantum metrology science and quantum photonics research. The transverse spatial state of a photon is a convenient high-dimensional quantum system for study, as it has a well-understood classical analogue as the transverse complex field profile of an optical beam. One severe drawback of all currently available quantum metrology techniques is the need for a time-consuming characterization process, which scales very unfavorably with the dimensionality of the quantum system. Here we demonstrate a technique t","authors_text":"Freida Rivera, Jessica Margiewicz, Mehul Malik, Mohammad Mirhosseini, Robert W. Boyd, Zhimin Shi","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-16T16:18:21Z","title":"Direct measurement of a one-million-dimensional photonic state"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04713","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":"sha256:0ce0a6d9c124a881f93c3793830abd11d6b80628338b6f4575c960d2bfb71ebf","target":"record","created_at":"2026-05-18T02:23:24Z","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":"13bfe6401cb1b6c0a0234960175e1783e10b761f34ae810dc4a414d565e19ba4","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-16T16:18:21Z","title_canon_sha256":"a3d4b772e82197fd8d9f1ba74136a2e7d61123096ca869ae85ec7c6743f43003"},"schema_version":"1.0","source":{"id":"1503.04713","kind":"arxiv","version":1}},"canonical_sha256":"78286d58bb358fcdea9c7257a082080c8d55c4c2739d3443c52576f46ce7c34b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78286d58bb358fcdea9c7257a082080c8d55c4c2739d3443c52576f46ce7c34b","first_computed_at":"2026-05-18T02:23:24.220507Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:23:24.220507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nvpNTVF844Q9le1eXJuKm6yYbl40LyYI/k6j2nn+PfSbYRi2pytJs7JQEHWBM2rYj9Mht59awcLi7AptZyfiBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:23:24.221152Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.04713","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ce0a6d9c124a881f93c3793830abd11d6b80628338b6f4575c960d2bfb71ebf","sha256:37a225d24c22ca2505dde25ca32de030cfe2f79664a80a41b217fce993408182"],"state_sha256":"ee94ad173e51c8fb06c073c631a3302d304fda94dec9f31aa92d3846428504a5"}