{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:D3ZDCTFHS47ZING2GIFS3DVNJM","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":"8710c0ba3e072c2b52246fe555acccc18e5585e46fdcea5d87815bf43b6f7dae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-16T15:29:36Z","title_canon_sha256":"c466237d2ad8b23fadd1f97f7abc0e95aec8654def879910dad29c94c31d8ed1"},"schema_version":"1.0","source":{"id":"1901.05346","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05346","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05346v1","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05346","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"D3ZDCTFHS47Z","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D3ZDCTFHS47ZING2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D3ZDCTFH","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:c72f70b6243502d419b6736a8682d611a1cd9a8ba2bc5eac53b654362592e627","target":"graph","created_at":"2026-05-17T23:43:03Z","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":"Recently, computational sampling methods have been implemented to spatially characterize terahertz (THz) fields. Previous methods usually rely on either specialized THz devices such as THz spatial light modulators, or complicated systems requiring assistance from photon-excited free-carriers with high-speed synchronization among multiple optical beams. Here, by spatially encoding an 800 nm near-infrared (NIR) probe beam through the use of an optical SLM, we demonstrate a simple sampling approach that can probe THz fields with a single-pixel camera. This design does not require any dedicated TH","authors_text":"Jiapeng Zhao, Kaia Williams, Robert Boyd, Xi-Cheng Zhang, Yiwen E","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-16T15:29:36Z","title":"Spatial Sampling of Terahertz Fields with Sub-wavelength Accuracy via Probe Beam Encoding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05346","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":"sha256:1343c1a21bae6aa45c74c25e4b563edcfee0f1ed7e4217ce31693e363289eb65","target":"record","created_at":"2026-05-17T23:43:03Z","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":"8710c0ba3e072c2b52246fe555acccc18e5585e46fdcea5d87815bf43b6f7dae","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-16T15:29:36Z","title_canon_sha256":"c466237d2ad8b23fadd1f97f7abc0e95aec8654def879910dad29c94c31d8ed1"},"schema_version":"1.0","source":{"id":"1901.05346","kind":"arxiv","version":1}},"canonical_sha256":"1ef2314ca7973f9434da320b2d8ead4b3aa31f0e3e4e34aa00953d95771c6e6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ef2314ca7973f9434da320b2d8ead4b3aa31f0e3e4e34aa00953d95771c6e6c","first_computed_at":"2026-05-17T23:43:03.781565Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:03.781565Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4RWFesx7kanJRTDzArZ4AySj48XOIK53oFJtvGE2UotrEY0HiQjnzVAbwlRkoSAuSgGr9F2O3Rv43tWLsgmEDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:03.782038Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.05346","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1343c1a21bae6aa45c74c25e4b563edcfee0f1ed7e4217ce31693e363289eb65","sha256:c72f70b6243502d419b6736a8682d611a1cd9a8ba2bc5eac53b654362592e627"],"state_sha256":"81fa7900d06e34cdaf8f1fcc6525168dad08c7dbe6342fb1f95b7ce0a6bfa26a"}