{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:NNRXY4JPWOB4SAG7Z3EWCMRFM6","short_pith_number":"pith:NNRXY4JP","schema_version":"1.0","canonical_sha256":"6b637c712fb383c900dfcec961322567b8f26f028d12a565c5e74c0f62a8ca05","source":{"kind":"arxiv","id":"1809.07980","version":1},"attestation_state":"computed","paper":{"title":"Measurement of the radial mode spectrum of photons through a phase-retrieval method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Mohammad Mirhosseini, Omar S. Magana-Loaiza, Rachel Sampson, Robert W. Boyd, Saumya Choudhary, Seyed Mohammad Hashemi Rafsanjani, Yoko Miyamoto","submitted_at":"2018-09-21T08:19:56Z","abstract_excerpt":"We propose and demonstrate a simple and easy-to-implement projective-measurement protocol to determine the radial index 'p' of a Laguerre-Gaussian (LGlp) mode. Our method entails converting any specified high-order LG0p mode into a near-Gaussian distribution that matches the fundamental mode of a single-mode fiber (SMF) through the use of two phase-screens (unitary transformations) obtained by applying a phase-retrieval algorithm. The unitary transformations preserve the orthogonality of modes and guarantee that our protocol can, in principle, be free of crosstalk. We measure the coupling effi"},"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":"1809.07980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-09-21T08:19:56Z","cross_cats_sorted":[],"title_canon_sha256":"233963ad4ea421872469898cda469232adcc62f5ec8b17d96f46902929b68fe2","abstract_canon_sha256":"f9cfa1d64591b436f600310fa94e9eb62167d9897cea43a00d0a2d1d667046e8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:39.890479Z","signature_b64":"SgMse7+ePy8YUQVfTf170KNPFVo/WabfHeiQXUn8CXVJ8H8/72sOYvYvbgjrIddgLsBKS0aN0vBrsqSg20Y1Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b637c712fb383c900dfcec961322567b8f26f028d12a565c5e74c0f62a8ca05","last_reissued_at":"2026-05-17T23:57:39.890027Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:39.890027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurement of the radial mode spectrum of photons through a phase-retrieval method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Mohammad Mirhosseini, Omar S. Magana-Loaiza, Rachel Sampson, Robert W. Boyd, Saumya Choudhary, Seyed Mohammad Hashemi Rafsanjani, Yoko Miyamoto","submitted_at":"2018-09-21T08:19:56Z","abstract_excerpt":"We propose and demonstrate a simple and easy-to-implement projective-measurement protocol to determine the radial index 'p' of a Laguerre-Gaussian (LGlp) mode. Our method entails converting any specified high-order LG0p mode into a near-Gaussian distribution that matches the fundamental mode of a single-mode fiber (SMF) through the use of two phase-screens (unitary transformations) obtained by applying a phase-retrieval algorithm. The unitary transformations preserve the orthogonality of modes and guarantee that our protocol can, in principle, be free of crosstalk. We measure the coupling effi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07980","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":"1809.07980","created_at":"2026-05-17T23:57:39.890085+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.07980v1","created_at":"2026-05-17T23:57:39.890085+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07980","created_at":"2026-05-17T23:57:39.890085+00:00"},{"alias_kind":"pith_short_12","alias_value":"NNRXY4JPWOB4","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_16","alias_value":"NNRXY4JPWOB4SAG7","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_8","alias_value":"NNRXY4JP","created_at":"2026-05-18T12:32:40.477152+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/NNRXY4JPWOB4SAG7Z3EWCMRFM6","json":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6.json","graph_json":"https://pith.science/api/pith-number/NNRXY4JPWOB4SAG7Z3EWCMRFM6/graph.json","events_json":"https://pith.science/api/pith-number/NNRXY4JPWOB4SAG7Z3EWCMRFM6/events.json","paper":"https://pith.science/paper/NNRXY4JP"},"agent_actions":{"view_html":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6","download_json":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6.json","view_paper":"https://pith.science/paper/NNRXY4JP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.07980&json=true","fetch_graph":"https://pith.science/api/pith-number/NNRXY4JPWOB4SAG7Z3EWCMRFM6/graph.json","fetch_events":"https://pith.science/api/pith-number/NNRXY4JPWOB4SAG7Z3EWCMRFM6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6/action/storage_attestation","attest_author":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6/action/author_attestation","sign_citation":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6/action/citation_signature","submit_replication":"https://pith.science/pith/NNRXY4JPWOB4SAG7Z3EWCMRFM6/action/replication_record"}},"created_at":"2026-05-17T23:57:39.890085+00:00","updated_at":"2026-05-17T23:57:39.890085+00:00"}