{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:SBPKLDWUKROQ6KYDETSHB5RLQD","short_pith_number":"pith:SBPKLDWU","schema_version":"1.0","canonical_sha256":"905ea58ed4545d0f2b0324e470f62b80d2ae592f4cd7a9b79a7295c2b36abfce","source":{"kind":"arxiv","id":"2508.20651","version":1},"attestation_state":"computed","paper":{"title":"Transformation of topological optical states via spiral modulation in fractional-diffraction systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Boris A. Malomed, Dongdong Wang, Dumitru Mihalache, Pengfei Li, Rujiang Li, Xueqing He","submitted_at":"2025-08-28T10:54:04Z","abstract_excerpt":"We propose a scheme for manipulations of a variety of topological states in fractional optical systems through spiral modulation of the local refraction index. An analytical approximation, based on a truncated finite-mode system, and direct simulations reveal that the spiral modulation supports direct mutual conversion between eigenmodes with topological-charge difference \\Delta m=1, driven by the resonant coupling between the modes and the underlying spiral modulation. The conversion between eigenmodes with \\Delta m=2 requires involvement of an intermediary mode and precise tuning of the reso"},"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":"2508.20651","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-28T10:54:04Z","cross_cats_sorted":[],"title_canon_sha256":"c89057e4cc995654bfff0f5ef465de7fa58ca04fa5aff98984314f3dfa977e8a","abstract_canon_sha256":"01d95aca46ce597bab0dbbaf25340fb8aa3794cce50f2d11c0325e21e927ef98"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:00:56.956930Z","signature_b64":"8qKPp4Vorj13JH8n/NIf6Wk3Xt/zXu6DpnbSJCmvhXN2+ELnygeXPTvEVGdFesu5mX+4Ky6ZRRIep0wmzUsRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"905ea58ed4545d0f2b0324e470f62b80d2ae592f4cd7a9b79a7295c2b36abfce","last_reissued_at":"2026-07-05T12:00:56.956375Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:00:56.956375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Transformation of topological optical states via spiral modulation in fractional-diffraction systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Boris A. Malomed, Dongdong Wang, Dumitru Mihalache, Pengfei Li, Rujiang Li, Xueqing He","submitted_at":"2025-08-28T10:54:04Z","abstract_excerpt":"We propose a scheme for manipulations of a variety of topological states in fractional optical systems through spiral modulation of the local refraction index. An analytical approximation, based on a truncated finite-mode system, and direct simulations reveal that the spiral modulation supports direct mutual conversion between eigenmodes with topological-charge difference \\Delta m=1, driven by the resonant coupling between the modes and the underlying spiral modulation. The conversion between eigenmodes with \\Delta m=2 requires involvement of an intermediary mode and precise tuning of the reso"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.20651","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.20651/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2508.20651","created_at":"2026-07-05T12:00:56.956442+00:00"},{"alias_kind":"arxiv_version","alias_value":"2508.20651v1","created_at":"2026-07-05T12:00:56.956442+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.20651","created_at":"2026-07-05T12:00:56.956442+00:00"},{"alias_kind":"pith_short_12","alias_value":"SBPKLDWUKROQ","created_at":"2026-07-05T12:00:56.956442+00:00"},{"alias_kind":"pith_short_16","alias_value":"SBPKLDWUKROQ6KYD","created_at":"2026-07-05T12:00:56.956442+00:00"},{"alias_kind":"pith_short_8","alias_value":"SBPKLDWU","created_at":"2026-07-05T12:00:56.956442+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/SBPKLDWUKROQ6KYDETSHB5RLQD","json":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD.json","graph_json":"https://pith.science/api/pith-number/SBPKLDWUKROQ6KYDETSHB5RLQD/graph.json","events_json":"https://pith.science/api/pith-number/SBPKLDWUKROQ6KYDETSHB5RLQD/events.json","paper":"https://pith.science/paper/SBPKLDWU"},"agent_actions":{"view_html":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD","download_json":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD.json","view_paper":"https://pith.science/paper/SBPKLDWU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2508.20651&json=true","fetch_graph":"https://pith.science/api/pith-number/SBPKLDWUKROQ6KYDETSHB5RLQD/graph.json","fetch_events":"https://pith.science/api/pith-number/SBPKLDWUKROQ6KYDETSHB5RLQD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD/action/storage_attestation","attest_author":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD/action/author_attestation","sign_citation":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD/action/citation_signature","submit_replication":"https://pith.science/pith/SBPKLDWUKROQ6KYDETSHB5RLQD/action/replication_record"}},"created_at":"2026-07-05T12:00:56.956442+00:00","updated_at":"2026-07-05T12:00:56.956442+00:00"}