{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:746CUUQZY5QP65KEIU5CECZJFX","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":"23dcae4d4d68bbeae01db38dda56fc1024f28683820b53e9787da61fd5cdae65","cross_cats_sorted":["cond-mat.mes-hall","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-07-03T12:17:28Z","title_canon_sha256":"bb6f4dfd2428b6aea4a890fd63408f66169c08fd021e1716445a729b90cde12b"},"schema_version":"1.0","source":{"id":"1707.00502","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.00502","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"arxiv_version","alias_value":"1707.00502v2","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.00502","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"pith_short_12","alias_value":"746CUUQZY5QP","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"746CUUQZY5QP65KE","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"746CUUQZ","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:e163aebdaba87c27481948a31e6bf0baae112d49fc5c3c3d03e178b93136f2eb","target":"graph","created_at":"2026-05-18T00:35:55Z","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":"Ensembles of nitrogen-vacancy centers in diamond are a highly promising platform for high-sensitivity magnetometry, whose efficacy is often based on efficiently generating and monitoring magnetic-field dependent infrared fluorescence. Here we report on an increased sensing efficiency with the use of a 532-nm resonant confocal cavity and a microwave resonator antenna for measuring the local magnetic noise density using the intrinsic nitrogen-vacancy concentration of a chemical-vapor deposited single-crystal diamond. We measure a near-shot-noise-limited magnetic noise floor of 200 pT/$\\sqrt{\\tex","authors_text":"Alexander Huck, Haitham A. R. El-Ella, J{\\o}rn O. B. Hansen, Sepehr Ahmadi, Ulrik L. Andersen","cross_cats":["cond-mat.mes-hall","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-07-03T12:17:28Z","title":"Pump-Enhanced Continuous-Wave Magnetometry using Nitrogen-Vacancy Ensembles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00502","kind":"arxiv","version":2},"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:fe17d439d9c2e1572903151b5c1363c639639fbc126c0e33cd3b93771b1becb1","target":"record","created_at":"2026-05-18T00:35:55Z","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":"23dcae4d4d68bbeae01db38dda56fc1024f28683820b53e9787da61fd5cdae65","cross_cats_sorted":["cond-mat.mes-hall","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-07-03T12:17:28Z","title_canon_sha256":"bb6f4dfd2428b6aea4a890fd63408f66169c08fd021e1716445a729b90cde12b"},"schema_version":"1.0","source":{"id":"1707.00502","kind":"arxiv","version":2}},"canonical_sha256":"ff3c2a5219c760ff7544453a220b292dcdab8531c8fd872398d4f531ef3657be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff3c2a5219c760ff7544453a220b292dcdab8531c8fd872398d4f531ef3657be","first_computed_at":"2026-05-18T00:35:55.072550Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:55.072550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QttAgQ21c8xgplTmPpWuRiXNjzsJFRKFFU6IAph2aBStac4mGQI9knzuq0lIp8sPUiwMpC6UyNOf2sxVEeWuDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:55.072911Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.00502","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe17d439d9c2e1572903151b5c1363c639639fbc126c0e33cd3b93771b1becb1","sha256:e163aebdaba87c27481948a31e6bf0baae112d49fc5c3c3d03e178b93136f2eb"],"state_sha256":"6e7cc5ea3b8963f2f452b16a549ee90fe3d9f4841c056f73370fad58f892099a"}