{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:H75E3BKJFULOJQEW5R3HFEH6KQ","short_pith_number":"pith:H75E3BKJ","schema_version":"1.0","canonical_sha256":"3ffa4d85492d16e4c096ec767290fe543565753f797b75fd420933fc8f0a413d","source":{"kind":"arxiv","id":"1510.07900","version":2},"attestation_state":"computed","paper":{"title":"Direct measurement of second-order coupling in a waveguide lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alexander Szameit, Benedikt Pressl, Gregor Weihs, Markus Gr\\\"afe, Ren\\'e Heilmann, Robert Keil","submitted_at":"2015-10-27T13:37:42Z","abstract_excerpt":"We measure the next-nearest-neighbour coupling in an array of coupled optical waveguides directly via an integrated eigenmode interferometer. In contrast to light propagation experiments, the technique is insensitive to nearest-neighbour dynamics. Our results show that second-order coupling in a linear configuration can be suppressed well below the level expected from the exponential decay of the guided modes."},"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":"1510.07900","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-27T13:37:42Z","cross_cats_sorted":[],"title_canon_sha256":"40c8812c62ca58b123458ab9d63a0b386009c3dfe3ca81db03b2196075d1c339","abstract_canon_sha256":"0270bf8395d7162c0adcacab2053043e36327bee976ba610880c88149667f1e0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:24:20.111117Z","signature_b64":"6cOFzbD8WuIs61dvC3ytwFT5rSQ6z1BJf/RwiWZYraXCLkpH7bTBvYPTlCMyoG5Ki7590zofJJsRWPGbKQGVBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ffa4d85492d16e4c096ec767290fe543565753f797b75fd420933fc8f0a413d","last_reissued_at":"2026-05-18T01:24:20.110774Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:24:20.110774Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Direct measurement of second-order coupling in a waveguide lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alexander Szameit, Benedikt Pressl, Gregor Weihs, Markus Gr\\\"afe, Ren\\'e Heilmann, Robert Keil","submitted_at":"2015-10-27T13:37:42Z","abstract_excerpt":"We measure the next-nearest-neighbour coupling in an array of coupled optical waveguides directly via an integrated eigenmode interferometer. In contrast to light propagation experiments, the technique is insensitive to nearest-neighbour dynamics. Our results show that second-order coupling in a linear configuration can be suppressed well below the level expected from the exponential decay of the guided modes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07900","kind":"arxiv","version":2},"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":"1510.07900","created_at":"2026-05-18T01:24:20.110828+00:00"},{"alias_kind":"arxiv_version","alias_value":"1510.07900v2","created_at":"2026-05-18T01:24:20.110828+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07900","created_at":"2026-05-18T01:24:20.110828+00:00"},{"alias_kind":"pith_short_12","alias_value":"H75E3BKJFULO","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_16","alias_value":"H75E3BKJFULOJQEW","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_8","alias_value":"H75E3BKJ","created_at":"2026-05-18T12:29:22.688609+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/H75E3BKJFULOJQEW5R3HFEH6KQ","json":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ.json","graph_json":"https://pith.science/api/pith-number/H75E3BKJFULOJQEW5R3HFEH6KQ/graph.json","events_json":"https://pith.science/api/pith-number/H75E3BKJFULOJQEW5R3HFEH6KQ/events.json","paper":"https://pith.science/paper/H75E3BKJ"},"agent_actions":{"view_html":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ","download_json":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ.json","view_paper":"https://pith.science/paper/H75E3BKJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1510.07900&json=true","fetch_graph":"https://pith.science/api/pith-number/H75E3BKJFULOJQEW5R3HFEH6KQ/graph.json","fetch_events":"https://pith.science/api/pith-number/H75E3BKJFULOJQEW5R3HFEH6KQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ/action/storage_attestation","attest_author":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ/action/author_attestation","sign_citation":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ/action/citation_signature","submit_replication":"https://pith.science/pith/H75E3BKJFULOJQEW5R3HFEH6KQ/action/replication_record"}},"created_at":"2026-05-18T01:24:20.110828+00:00","updated_at":"2026-05-18T01:24:20.110828+00:00"}