{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UNCO72LKSFL773AT5BIY6STN4V","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":"101a15d569c31d5500a7365c9cc72c34672bced234fdc7b93be0c07e8cc0be48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-12T18:30:20Z","title_canon_sha256":"8791925a0df0112d9cbf0dba25dd32ea56c6c06b1803f514b1a7fd9f48fd2cce"},"schema_version":"1.0","source":{"id":"1902.04536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04536","created_at":"2026-05-17T23:46:12Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04536v1","created_at":"2026-05-17T23:46:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04536","created_at":"2026-05-17T23:46:12Z"},{"alias_kind":"pith_short_12","alias_value":"UNCO72LKSFL7","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UNCO72LKSFL773AT","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UNCO72LK","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:0f6bd86a80774b457153672c68606ddc31a338268148fb2e07b9999bad1ed6b6","target":"graph","created_at":"2026-05-17T23:46:12Z","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":"We develop a concept for a waveguide that exploits spatial control of nonlinear surface-polaritonic waves. Our scheme includes an optical cavity with four-level $\\text{N}$-type atoms in a lossless dielectric placed above a negative-index metamaterial layer. We propose exciting a polaritonic Akhmediev breather at a certain position of the interface between the atomic medium and the metamaterial by modifying laser-field intensities and detunings. Furthermore, we propose generating position-dependent polaritonic frequency combs by engineering widths of the electromagnetically induced transparency","authors_text":"Barry C. Sanders, Pierre Berini, Saeid Asgarnezhad-Zorgabad","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-12T18:30:20Z","title":"Polaritonic frequency-comb generation and breather propagation in a negative-index metamaterial with a cold four-level atomic medium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04536","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":"sha256:9121b44c7bd0125619dfd102eba4d0f40f261dfcc0c2870d42eca0a7d9ebb9c8","target":"record","created_at":"2026-05-17T23:46:12Z","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":"101a15d569c31d5500a7365c9cc72c34672bced234fdc7b93be0c07e8cc0be48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-12T18:30:20Z","title_canon_sha256":"8791925a0df0112d9cbf0dba25dd32ea56c6c06b1803f514b1a7fd9f48fd2cce"},"schema_version":"1.0","source":{"id":"1902.04536","kind":"arxiv","version":1}},"canonical_sha256":"a344efe96a9157ffec13e8518f4a6de55e2103e853d90e6a2648d50abc09e310","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a344efe96a9157ffec13e8518f4a6de55e2103e853d90e6a2648d50abc09e310","first_computed_at":"2026-05-17T23:46:12.309962Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:12.309962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AVJ3P+qGO8+npyNCNtRrvk/anLkaR+BFUofE4WTp5SAGVa0lx2cAkjiIqeb14e7VPyHPHdMAWj1EA9gL9tpyCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:12.310581Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.04536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9121b44c7bd0125619dfd102eba4d0f40f261dfcc0c2870d42eca0a7d9ebb9c8","sha256:0f6bd86a80774b457153672c68606ddc31a338268148fb2e07b9999bad1ed6b6"],"state_sha256":"5159dfc14b77f31ba1ec83448c522dc666ab98397f293c640f8c9ad81ce48c6e"}