{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:64GHE4EHU7YG5MOSIR7DJYRCJN","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":"81b4107daef2f166155afcf75f74cf46aba60823cc59619393b87a0c7219d33e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-08-26T20:47:12Z","title_canon_sha256":"e577351f80eb6355cd6a96787476910e2b7c21855857fdad604731f86ea80034"},"schema_version":"1.0","source":{"id":"1608.07603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.07603","created_at":"2026-05-18T00:49:15Z"},{"alias_kind":"arxiv_version","alias_value":"1608.07603v1","created_at":"2026-05-18T00:49:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07603","created_at":"2026-05-18T00:49:15Z"},{"alias_kind":"pith_short_12","alias_value":"64GHE4EHU7YG","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"64GHE4EHU7YG5MOS","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"64GHE4EH","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:d7adc7308b178c9ec12eb64f9b971e520a6d9d71ab687d88cc7319c0bef7b9ec","target":"graph","created_at":"2026-05-18T00:49:15Z","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 demonstrate the implementation of a ring cavity to enhance the efficiency of parametric four-wave mixing in rubidium. Using an input coupler with 95% reflectance, a finesse of 19.6$\\pm$0.5 is achieved with a rubidium cell inside. This increases the circulating intensity by a factor of 5.6$\\pm$0.5, and through two-photon excitation on the $5s_{1/2}\\rightarrow5d_{5/2}$ transition with a single excitation laser, up to 1.9$\\pm$0.3 mW of power at 420 nm is generated, 50 times what was previously generated with this scheme. The dependence of the output on Rb density and input power has been explo","authors_text":"E. Brekke, S. Potier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-08-26T20:47:12Z","title":"Optical cavity for enhanced parametric four-wave mixing in rubidium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07603","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":"sha256:45907b70523ebcb6def88e6e7c0cbaaba043bcb5b45c7da03c13a0947ba05a70","target":"record","created_at":"2026-05-18T00:49:15Z","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":"81b4107daef2f166155afcf75f74cf46aba60823cc59619393b87a0c7219d33e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-08-26T20:47:12Z","title_canon_sha256":"e577351f80eb6355cd6a96787476910e2b7c21855857fdad604731f86ea80034"},"schema_version":"1.0","source":{"id":"1608.07603","kind":"arxiv","version":1}},"canonical_sha256":"f70c727087a7f06eb1d2447e34e2224b49cf38f8f1b20e1680e25c7c524f585b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f70c727087a7f06eb1d2447e34e2224b49cf38f8f1b20e1680e25c7c524f585b","first_computed_at":"2026-05-18T00:49:15.973955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:15.973955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tO6txIX/tq0jc9To+aBPpRsuK0SLfvdIJhxXYlaDxrxYtsdeEy1KhvVcGjJUFqRbgjSmaWl1F71ojrNWuB80Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:15.974440Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.07603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45907b70523ebcb6def88e6e7c0cbaaba043bcb5b45c7da03c13a0947ba05a70","sha256:d7adc7308b178c9ec12eb64f9b971e520a6d9d71ab687d88cc7319c0bef7b9ec"],"state_sha256":"0f8a97fdadcafcdb127924eb9502bbbefdbdb92c542483f601e334dce8507a5f"}