{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RMLCT64SIRPZA4P3ZUUXGTYSV6","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":"b0d368064f93cc8a8677ed9bcc93e12104c1ad53a4b2370e4d37da3be20f0bae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-10T22:10:38Z","title_canon_sha256":"365cef3a16c5aec6aae75e94e38c8e6778d339ec0cd33166271abce600ab75d5"},"schema_version":"1.0","source":{"id":"1812.04127","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.04127","created_at":"2026-05-17T23:39:47Z"},{"alias_kind":"arxiv_version","alias_value":"1812.04127v1","created_at":"2026-05-17T23:39:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.04127","created_at":"2026-05-17T23:39:47Z"},{"alias_kind":"pith_short_12","alias_value":"RMLCT64SIRPZ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RMLCT64SIRPZA4P3","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RMLCT64S","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:4db17714183160500b693741eb64cec90b75905a22fc73b2f0088e5059b590f9","target":"graph","created_at":"2026-05-17T23:39:47Z","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"},"paper":{"abstract_excerpt":"The ability to completely characterize the state of a quantum system is an essential element for the emerging quantum technologies. Here, we present a compressed-sensing inspired method to ascertain any rank-deficient qudit state, which we experimentally encode in photonic orbital angular momentum. We efficiently reconstruct these qudit states from a few scans with an intensified CCD camera. Since it requires only a few intensity measurements, our technique would provide an easy and accurate way to identify quantum sources, channels, and systems.","authors_text":"D. Ahn, D. Koutny, E. Karimi, F. Bouchard, F. Hufnagel, G. Leuchs, H. Jeong, J. Rehacek, L. L. Sanchez-Soto, Y. S. Teo, Z. Hradil","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-10T22:10:38Z","title":"Compressed sensing of twisted photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.04127","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":"sha256:21fd21d052731fb2455192953b564de6d6ffa029d5654f2c91798ce83470f06a","target":"record","created_at":"2026-05-17T23:39:47Z","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":"b0d368064f93cc8a8677ed9bcc93e12104c1ad53a4b2370e4d37da3be20f0bae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-10T22:10:38Z","title_canon_sha256":"365cef3a16c5aec6aae75e94e38c8e6778d339ec0cd33166271abce600ab75d5"},"schema_version":"1.0","source":{"id":"1812.04127","kind":"arxiv","version":1}},"canonical_sha256":"8b1629fb92445f9071fbcd29734f12af880bf52cecb229e7985f4b76548479f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b1629fb92445f9071fbcd29734f12af880bf52cecb229e7985f4b76548479f9","first_computed_at":"2026-05-17T23:39:47.737207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:47.737207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hXYDZFbWCTjqMNae6Qig/WzRXMjxuZwWQhks7DEWrQEG8wixMq7aUeYLHlGZ5jvMRtKeLrk+u8BNiR1ZbwkBBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:47.737970Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.04127","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:21fd21d052731fb2455192953b564de6d6ffa029d5654f2c91798ce83470f06a","sha256:4db17714183160500b693741eb64cec90b75905a22fc73b2f0088e5059b590f9"],"state_sha256":"50c46ea8817791c90c5acca33dc1340abfaa0d4249c8428fcccfc005b594cd2e"}