{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:CA7HQSV2VQNT4LUTOHRMIBLPU7","short_pith_number":"pith:CA7HQSV2","canonical_record":{"source":{"id":"1803.09917","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-03-27T06:38:44Z","cross_cats_sorted":[],"title_canon_sha256":"bbf77804cb046e96b1705c3807c2b542eee5325c6185ea97e122df013d06ab50","abstract_canon_sha256":"d8fc3a35336be825fd7a679fec47f44cbdb0d6318b7e7604a32a102a4688c40a"},"schema_version":"1.0"},"canonical_sha256":"103e784abaac1b3e2e9371e2c4056fa7c5bb5cee6fa5f7f3494bc942560ad8d9","source":{"kind":"arxiv","id":"1803.09917","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.09917","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1803.09917v1","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.09917","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"CA7HQSV2VQNT","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"CA7HQSV2VQNT4LUT","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"CA7HQSV2","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:CA7HQSV2VQNT4LUTOHRMIBLPU7","target":"record","payload":{"canonical_record":{"source":{"id":"1803.09917","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-03-27T06:38:44Z","cross_cats_sorted":[],"title_canon_sha256":"bbf77804cb046e96b1705c3807c2b542eee5325c6185ea97e122df013d06ab50","abstract_canon_sha256":"d8fc3a35336be825fd7a679fec47f44cbdb0d6318b7e7604a32a102a4688c40a"},"schema_version":"1.0"},"canonical_sha256":"103e784abaac1b3e2e9371e2c4056fa7c5bb5cee6fa5f7f3494bc942560ad8d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:46.580410Z","signature_b64":"1MNIjt+xObg4sL8AsCv3eF3fSFUOfhozfVxQKh5DHWmaxVo8Q3kZk5OjQ/QdDkD5PyEXo6h9UVajjUEiYJX7CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"103e784abaac1b3e2e9371e2c4056fa7c5bb5cee6fa5f7f3494bc942560ad8d9","last_reissued_at":"2026-05-18T00:10:46.579846Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:46.579846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.09917","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":"2026-05-18T00:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F2FuYe8jva2D/LdIawqa50nQb+hKVKAOQDYfRory/nPkCaJAXQ8Xfz+EHo3rwR2uSsM8TJJJvaSbb8kYA5LiBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:07:36.439520Z"},"content_sha256":"79123cdb10604b9294286e1f01ed353c8e4f0f9f4bb62de2acf6277afbbe842f","schema_version":"1.0","event_id":"sha256:79123cdb10604b9294286e1f01ed353c8e4f0f9f4bb62de2acf6277afbbe842f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:CA7HQSV2VQNT4LUTOHRMIBLPU7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electrically-activated spin-controlled orbital angular momentum multiplexer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Etienne Brasselet, Filippo Romanato, Gianluca Ruffato, Michele Massari","submitted_at":"2018-03-27T06:38:44Z","abstract_excerpt":"We present and test the integration of a static orbital angular momentum mode multiplexer with a dynamical geometric-phase optical element enabling on-demand spin-controlled angular momentum multiplexing. A diffractive optics multiplexer fabricated with 3D high-resolution electron beam lithography performs a conformal mapping for the conversion from linear to azimuthal phase gradients. The latter is functionalized by a dynamic spin-orbit add-on that consists of a self-engineered electrically-activated liquid crystal optical vortex generator having large clear-aperture and high-resolution. By c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.09917","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":"2026-05-18T00:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V3f1ZcXupiMCqqsk6ZO9JSvY81BVrSAq6m/8k6xMQYSzc2Zm/Wtqs2oKMcvbfVCKitqbu+cg8TjE3CeFNS5hAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:07:36.440103Z"},"content_sha256":"f541753040e7ab541fec09dd05963bde72eee6eb818fc61e9801e0b0f073fc27","schema_version":"1.0","event_id":"sha256:f541753040e7ab541fec09dd05963bde72eee6eb818fc61e9801e0b0f073fc27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/bundle.json","state_url":"https://pith.science/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/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":"2026-05-27T03:07:36Z","links":{"resolver":"https://pith.science/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7","bundle":"https://pith.science/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/bundle.json","state":"https://pith.science/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CA7HQSV2VQNT4LUTOHRMIBLPU7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:CA7HQSV2VQNT4LUTOHRMIBLPU7","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":"d8fc3a35336be825fd7a679fec47f44cbdb0d6318b7e7604a32a102a4688c40a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-03-27T06:38:44Z","title_canon_sha256":"bbf77804cb046e96b1705c3807c2b542eee5325c6185ea97e122df013d06ab50"},"schema_version":"1.0","source":{"id":"1803.09917","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.09917","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1803.09917v1","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.09917","created_at":"2026-05-18T00:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"CA7HQSV2VQNT","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"CA7HQSV2VQNT4LUT","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"CA7HQSV2","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:f541753040e7ab541fec09dd05963bde72eee6eb818fc61e9801e0b0f073fc27","target":"graph","created_at":"2026-05-18T00:10:46Z","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":"We present and test the integration of a static orbital angular momentum mode multiplexer with a dynamical geometric-phase optical element enabling on-demand spin-controlled angular momentum multiplexing. A diffractive optics multiplexer fabricated with 3D high-resolution electron beam lithography performs a conformal mapping for the conversion from linear to azimuthal phase gradients. The latter is functionalized by a dynamic spin-orbit add-on that consists of a self-engineered electrically-activated liquid crystal optical vortex generator having large clear-aperture and high-resolution. By c","authors_text":"Etienne Brasselet, Filippo Romanato, Gianluca Ruffato, Michele Massari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-03-27T06:38:44Z","title":"Electrically-activated spin-controlled orbital angular momentum multiplexer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.09917","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":"sha256:79123cdb10604b9294286e1f01ed353c8e4f0f9f4bb62de2acf6277afbbe842f","target":"record","created_at":"2026-05-18T00:10:46Z","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":"d8fc3a35336be825fd7a679fec47f44cbdb0d6318b7e7604a32a102a4688c40a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-03-27T06:38:44Z","title_canon_sha256":"bbf77804cb046e96b1705c3807c2b542eee5325c6185ea97e122df013d06ab50"},"schema_version":"1.0","source":{"id":"1803.09917","kind":"arxiv","version":1}},"canonical_sha256":"103e784abaac1b3e2e9371e2c4056fa7c5bb5cee6fa5f7f3494bc942560ad8d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"103e784abaac1b3e2e9371e2c4056fa7c5bb5cee6fa5f7f3494bc942560ad8d9","first_computed_at":"2026-05-18T00:10:46.579846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:46.579846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1MNIjt+xObg4sL8AsCv3eF3fSFUOfhozfVxQKh5DHWmaxVo8Q3kZk5OjQ/QdDkD5PyEXo6h9UVajjUEiYJX7CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:46.580410Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.09917","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79123cdb10604b9294286e1f01ed353c8e4f0f9f4bb62de2acf6277afbbe842f","sha256:f541753040e7ab541fec09dd05963bde72eee6eb818fc61e9801e0b0f073fc27"],"state_sha256":"f6513ec9d1582b7d96e8e815581bdfcd01c7c55681e4179bd78a33fa3344dd2c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6rxd7ED+MDgILNA3yNhG3QAuxDYVYZf3kjjAtUfz8gjnCubJkoC49i3JlrN58aPMS+OBtyKASi8KxgDEv20/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:07:36.443529Z","bundle_sha256":"6f15790aeea19ddd34b09cd83ac170089f96552c785e12a9f19e041e59687c72"}}