{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:U7KTULQMC3DCT26TITKUJ2S5O5","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":"15eaaa23a398ccd18557b7e45c0acd68fbdb699edcf0e1f5146dddeb5dc7b4ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-31T15:55:09Z","title_canon_sha256":"22c390d1e33a01d6eab0f56e0493bff73797329e57ffb56684f3748b86c0ae03"},"schema_version":"1.0","source":{"id":"2607.29565","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.29565","created_at":"2026-08-03T01:38:47Z"},{"alias_kind":"arxiv_version","alias_value":"2607.29565v1","created_at":"2026-08-03T01:38:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29565","created_at":"2026-08-03T01:38:47Z"},{"alias_kind":"pith_short_12","alias_value":"U7KTULQMC3DC","created_at":"2026-08-03T01:38:47Z"},{"alias_kind":"pith_short_16","alias_value":"U7KTULQMC3DCT26T","created_at":"2026-08-03T01:38:47Z"},{"alias_kind":"pith_short_8","alias_value":"U7KTULQM","created_at":"2026-08-03T01:38:47Z"}],"graph_snapshots":[{"event_id":"sha256:340aec5f840b7ac20b92ae257da9f645a79d730213de916ae227437fbd170212","target":"graph","created_at":"2026-08-03T01:38:47Z","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/2607.29565/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The physical properties of a quantum system, whether pure or mixed, are described fully by its density matrix. Recovery of the density matrix through projective measurements -- referred to as quantum state tomography -- is a cornerstone of quantum optics and metrology. The implementation of this approach in transmission electron microscopy, in particular for the characterisation of an electron beam after inelastic scattering, has remained a longstanding challenge as a result of the complexity of scanning high-dimensional phase spaces, with the number of required measurements growing quadratica","authors_text":"Alberto Roncaglia, Alessio D'Errico, Amir H. Tavabi, Ebrahim Karimi, Enzo Rotunno, Gian Carlo Gazzadi, Giovanni Bertoni, Luca Belsito, Paolo Rosi, Peter Tiemeijer, Rafal E. Dunin-Borkowski, Stefano Frabboni, Vincenzo Grillo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-31T15:55:09Z","title":"Quantum tomography of inelastic electron scattering \\emph{via} orbital angular momentum states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29565","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":"sha256:056e60568aa9918cfd8e388bcc12f7d0e2f444a7c0ba93a43c6d7a7c414c1686","target":"record","created_at":"2026-08-03T01:38:47Z","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":"15eaaa23a398ccd18557b7e45c0acd68fbdb699edcf0e1f5146dddeb5dc7b4ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-31T15:55:09Z","title_canon_sha256":"22c390d1e33a01d6eab0f56e0493bff73797329e57ffb56684f3748b86c0ae03"},"schema_version":"1.0","source":{"id":"2607.29565","kind":"arxiv","version":1}},"canonical_sha256":"a7d53a2e0c16c629ebd344d544ea5d7749298d125e7b030776cb4f9b9c1088d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7d53a2e0c16c629ebd344d544ea5d7749298d125e7b030776cb4f9b9c1088d7","first_computed_at":"2026-08-03T01:38:47.548995Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-03T01:38:47.548995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9ilr8j83g0cNPrIThGzkVTMQekzkJQ+dQmwpZfnOSGo6QcX6lgHeUWs7Hp4aIHMYVgf9YQN6nvOlXD1bUYi8Aw==","signature_status":"signed_v1","signed_at":"2026-08-03T01:38:47.550536Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.29565","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:056e60568aa9918cfd8e388bcc12f7d0e2f444a7c0ba93a43c6d7a7c414c1686","sha256:340aec5f840b7ac20b92ae257da9f645a79d730213de916ae227437fbd170212"],"state_sha256":"7bf8faee6b09ef514c71e332bd0b7904ab310f2718ed95457974a41d179daa43"}