{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:VNCFY22VXOJSVL3A4O6SHUPIXC","short_pith_number":"pith:VNCFY22V","schema_version":"1.0","canonical_sha256":"ab445c6b55bb932aaf60e3bd23d1e8b887a2dc2dae5de2d2326ed7ae0582c62c","source":{"kind":"arxiv","id":"1105.0784","version":1},"attestation_state":"computed","paper":{"title":"Resilience of orbital angular momentum qubits and effects on hybrid entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniele Giovannini, Eleonora Nagali, Fabio Sciarrino, Lorenzo Marrucci","submitted_at":"2011-05-04T10:21:04Z","abstract_excerpt":"The orbital angular momentum of light (OAM) provides a promising approach for the implementation of multidimensional states (qudits) for quantum information purposes. In order to characterize the degradation undergone by the information content of qubits encoded in a bidimensional subspace of the orbital angular momentum degree of freedom of photons, we study how the state fidelity is affected by a transverse obstruction placed along the propagation direction of the light beam. Emphasis is placed on the effects of planar and radial hard-edged aperture functions on the state fidelity of Laguerr"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.0784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-05-04T10:21:04Z","cross_cats_sorted":[],"title_canon_sha256":"3688c5f8b32a3463f9205e648e1d6b98aff7f666135a4de0530266c3479d0dfe","abstract_canon_sha256":"c89300a034f1dd8354a141a3473fb887fff401713340552ce0ed167846fe8232"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:01.836991Z","signature_b64":"1egpwuWIci4qBU3NiP59xbFpb76fE7SqXwcDqW4dzc03vB9M1Z5hbiNOJ4xdr6ktNur2/WcW98xLVLGPsqIBCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab445c6b55bb932aaf60e3bd23d1e8b887a2dc2dae5de2d2326ed7ae0582c62c","last_reissued_at":"2026-05-18T04:23:01.836526Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:01.836526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Resilience of orbital angular momentum qubits and effects on hybrid entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniele Giovannini, Eleonora Nagali, Fabio Sciarrino, Lorenzo Marrucci","submitted_at":"2011-05-04T10:21:04Z","abstract_excerpt":"The orbital angular momentum of light (OAM) provides a promising approach for the implementation of multidimensional states (qudits) for quantum information purposes. In order to characterize the degradation undergone by the information content of qubits encoded in a bidimensional subspace of the orbital angular momentum degree of freedom of photons, we study how the state fidelity is affected by a transverse obstruction placed along the propagation direction of the light beam. Emphasis is placed on the effects of planar and radial hard-edged aperture functions on the state fidelity of Laguerr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0784","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1105.0784","created_at":"2026-05-18T04:23:01.836611+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.0784v1","created_at":"2026-05-18T04:23:01.836611+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0784","created_at":"2026-05-18T04:23:01.836611+00:00"},{"alias_kind":"pith_short_12","alias_value":"VNCFY22VXOJS","created_at":"2026-05-18T12:26:44.992195+00:00"},{"alias_kind":"pith_short_16","alias_value":"VNCFY22VXOJSVL3A","created_at":"2026-05-18T12:26:44.992195+00:00"},{"alias_kind":"pith_short_8","alias_value":"VNCFY22V","created_at":"2026-05-18T12:26:44.992195+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC","json":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC.json","graph_json":"https://pith.science/api/pith-number/VNCFY22VXOJSVL3A4O6SHUPIXC/graph.json","events_json":"https://pith.science/api/pith-number/VNCFY22VXOJSVL3A4O6SHUPIXC/events.json","paper":"https://pith.science/paper/VNCFY22V"},"agent_actions":{"view_html":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC","download_json":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC.json","view_paper":"https://pith.science/paper/VNCFY22V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.0784&json=true","fetch_graph":"https://pith.science/api/pith-number/VNCFY22VXOJSVL3A4O6SHUPIXC/graph.json","fetch_events":"https://pith.science/api/pith-number/VNCFY22VXOJSVL3A4O6SHUPIXC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC/action/storage_attestation","attest_author":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC/action/author_attestation","sign_citation":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC/action/citation_signature","submit_replication":"https://pith.science/pith/VNCFY22VXOJSVL3A4O6SHUPIXC/action/replication_record"}},"created_at":"2026-05-18T04:23:01.836611+00:00","updated_at":"2026-05-18T04:23:01.836611+00:00"}