{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:4K75FLENT6HEA4ZYDIQPRRQ7BB","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":"bbdc50b1b9a1f4e284cb3b7fe089eb338bbd4d7563b85fa60cb15cedc3ee5a87","cross_cats_sorted":["physics.app-ph","physics.chem-ph","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-03-04T00:16:05Z","title_canon_sha256":"a2ed9abf265cfad9516abde884b5d3617d0203543ce9332caf48b23754e3ff40"},"schema_version":"1.0","source":{"id":"2503.02140","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.02140","created_at":"2026-07-05T10:23:37Z"},{"alias_kind":"arxiv_version","alias_value":"2503.02140v1","created_at":"2026-07-05T10:23:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.02140","created_at":"2026-07-05T10:23:37Z"},{"alias_kind":"pith_short_12","alias_value":"4K75FLENT6HE","created_at":"2026-07-05T10:23:37Z"},{"alias_kind":"pith_short_16","alias_value":"4K75FLENT6HEA4ZY","created_at":"2026-07-05T10:23:37Z"},{"alias_kind":"pith_short_8","alias_value":"4K75FLEN","created_at":"2026-07-05T10:23:37Z"}],"graph_snapshots":[{"event_id":"sha256:79ede9a1f0e48e272227fcf90aaf986a0696d9ba81a3a71249406ad0ac360cef","target":"graph","created_at":"2026-07-05T10:23:37Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2503.02140/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-inductive magnetometers based on solid-state spins offer a promising solution for small-volume nuclear magnetic resonance (NMR) detection. A remaining challenge is to operate at a sufficiently high magnetic field to resolve chemical shifts at the part-per-billion level. Here, we demonstrate a Ramsey-M_z protocol that uses Ramsey interferometry to convert an analyte's transverse spin precession into a longitudinal magnetization (M_z), which is subsequently modulated and detected with a diamond magnetometer. We record NMR spectra at B0=0.32 T with a fractional spectral resolution of ~350 ppb","authors_text":"Andrew F. McDowell, Andrey Jarmola, Bryan A. Richards, Janis Smits, Joshua T. Damron, Maxwell D. Aiello, Maziar Saleh Ziabari, Victor M. Acosta, Yaser Silani, Zaili Peng","cross_cats":["physics.app-ph","physics.chem-ph","physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-03-04T00:16:05Z","title":"Chemically resolved nuclear magnetic resonance spectroscopy by longitudinal magnetization detection with a diamond magnetometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.02140","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":"sha256:5a5c8ae11fd30c2455e55c1e89fab0f864bc2c62dae5e3795fd339217da9655c","target":"record","created_at":"2026-07-05T10:23:37Z","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":"bbdc50b1b9a1f4e284cb3b7fe089eb338bbd4d7563b85fa60cb15cedc3ee5a87","cross_cats_sorted":["physics.app-ph","physics.chem-ph","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-03-04T00:16:05Z","title_canon_sha256":"a2ed9abf265cfad9516abde884b5d3617d0203543ce9332caf48b23754e3ff40"},"schema_version":"1.0","source":{"id":"2503.02140","kind":"arxiv","version":1}},"canonical_sha256":"e2bfd2ac8d9f8e4073381a20f8c61f0848c703984c111e343ee07609eaa4e1ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e2bfd2ac8d9f8e4073381a20f8c61f0848c703984c111e343ee07609eaa4e1ec","first_computed_at":"2026-07-05T10:23:37.449955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:23:37.449955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"971BJXDKdZFTBErqjiGU2LElHyzayC9s9lVoOXzqtQ5sODze/ytvsB4OzxEWS0r6Jd8SkR3kO0s7H/4HHsWrBg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:23:37.452512Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.02140","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a5c8ae11fd30c2455e55c1e89fab0f864bc2c62dae5e3795fd339217da9655c","sha256:79ede9a1f0e48e272227fcf90aaf986a0696d9ba81a3a71249406ad0ac360cef"],"state_sha256":"82835a0f31b0805bd34821c58296f10d08eaf6a5ed901612a9d96bd28300af4a"}