{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:762EY7HENVQQNPT4JODEJ4T7RF","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":"c441b03ce4537beb6a7a8a33b859b9ea121aa68105815a08d7255d423897e22d","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-09-03T15:47:39Z","title_canon_sha256":"de408aca2c8dcbb38c6bf521675f829769dcfae2b76671b13ee6d2a4ecfa90e8"},"schema_version":"1.0","source":{"id":"1709.00736","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00736","created_at":"2026-05-18T00:21:11Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00736v1","created_at":"2026-05-18T00:21:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00736","created_at":"2026-05-18T00:21:11Z"},{"alias_kind":"pith_short_12","alias_value":"762EY7HENVQQ","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"762EY7HENVQQNPT4","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"762EY7HE","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:5fb62876f266c47a847b3c3a7c8b8ed6096d88ef5a63380bae7d33c8c9d12823","target":"graph","created_at":"2026-05-18T00:21:11Z","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":"Vector vortex beams are structured states of light that are non-separable in their polarisation and spatial mode, they are eigenmodes of free-space and many fibre systems, and have the capacity to be used as a modal basis for both classical and quantum communication. Here we outline recent progress in our understanding of these modes, from their creation to their characterization and detection. We then use these tools to study the propagation behaviour of such modes in free-space and optical fibre and show that modal cross-talk results in a decay of vector states into separable scalar modes, w","authors_text":"Andrew Forbes, Bienvenu Ndagano, Carmelo Rosales-Guzman, Isaac Nape, Mitchell A. Cox","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-09-03T15:47:39Z","title":"Creation and characterization of vector vortex modes for classical and quantum communication"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00736","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":"sha256:94b105d37e8118947abed96a67ae5573bfefc9b01b61be2647c9df10c73d1a83","target":"record","created_at":"2026-05-18T00:21:11Z","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":"c441b03ce4537beb6a7a8a33b859b9ea121aa68105815a08d7255d423897e22d","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-09-03T15:47:39Z","title_canon_sha256":"de408aca2c8dcbb38c6bf521675f829769dcfae2b76671b13ee6d2a4ecfa90e8"},"schema_version":"1.0","source":{"id":"1709.00736","kind":"arxiv","version":1}},"canonical_sha256":"ffb44c7ce46d6106be7c4b8644f27f8949f6b1b79f6a3c2f9af69b0b82fb859c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffb44c7ce46d6106be7c4b8644f27f8949f6b1b79f6a3c2f9af69b0b82fb859c","first_computed_at":"2026-05-18T00:21:11.211978Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:11.211978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pxhTeCRMW/q1SxLOKHygTvZeZmZGYSufeLSQh5f7Im/jBwKf3fmWl2kK3ThVARdwqmIPHRlk9gLc5+gOFk0wAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:11.212587Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00736","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94b105d37e8118947abed96a67ae5573bfefc9b01b61be2647c9df10c73d1a83","sha256:5fb62876f266c47a847b3c3a7c8b8ed6096d88ef5a63380bae7d33c8c9d12823"],"state_sha256":"a017e2d1bc8fcfa2ebb11ef8822d4b607d9791ded1bb0d5a74ab209d325c6c41"}