{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:GQOBBMQO2LUMZKZ35PXR55NX6Q","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":"10f0a4b360834787055abf63ee2820f0008cee026cac7f4256a810beefff9cdb","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-04-01T19:59:25Z","title_canon_sha256":"bdbad05f864a4d6d9368670c33c7de959b80ccf3f577daff70c01abebb11ceac"},"schema_version":"1.0","source":{"id":"1404.0374","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0374","created_at":"2026-05-18T01:43:43Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0374v1","created_at":"2026-05-18T01:43:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0374","created_at":"2026-05-18T01:43:43Z"},{"alias_kind":"pith_short_12","alias_value":"GQOBBMQO2LUM","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"GQOBBMQO2LUMZKZ3","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"GQOBBMQO","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:84c0402878e789144d5c8acdaed3409b7052d602f9179dd7df47b8b09d3b2a7e","target":"graph","created_at":"2026-05-18T01:43:43Z","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 an optically pumped $^{87}$Rb magnetometer in a microfabricated vapor cell based on a zero-field dispersive resonance generated by optical modulation of the $^{87}$Rb ground state energy levels. The magnetometer is operated in the spin-exchange relaxation-free regime where high magnetic field sensitivities can be achieved. This device can be useful in applications requiring array-based magnetometers where radio frequency magnetic fields can induce cross-talk among adjacent sensors or affect the source of the magnetic field being measured.","authors_text":"John Kitching, Ricardo Jimenez-Martinez, Svenja Knappe","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-04-01T19:59:25Z","title":"An optically modulated zero-field atomic magnetometer with suppressed spin-exchange broadening"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0374","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":"sha256:51176af7631efdfc943121c7d1deb592776bc2fa1f8094a33274a8ce85823ef1","target":"record","created_at":"2026-05-18T01:43:43Z","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":"10f0a4b360834787055abf63ee2820f0008cee026cac7f4256a810beefff9cdb","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-04-01T19:59:25Z","title_canon_sha256":"bdbad05f864a4d6d9368670c33c7de959b80ccf3f577daff70c01abebb11ceac"},"schema_version":"1.0","source":{"id":"1404.0374","kind":"arxiv","version":1}},"canonical_sha256":"341c10b20ed2e8ccab3bebef1ef5b7f41cb43971ecb90d0ed729c1355eb6d7ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"341c10b20ed2e8ccab3bebef1ef5b7f41cb43971ecb90d0ed729c1355eb6d7ee","first_computed_at":"2026-05-18T01:43:43.240780Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:43.240780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DwuhS5QZDVGIXjUh/1XKbdlww7/YiCKJ/nJvuUW5ro0GtWA8bBtlbMbzbgPzSY6F8p+UEecOychFtwu78TP4BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:43.241231Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.0374","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51176af7631efdfc943121c7d1deb592776bc2fa1f8094a33274a8ce85823ef1","sha256:84c0402878e789144d5c8acdaed3409b7052d602f9179dd7df47b8b09d3b2a7e"],"state_sha256":"0ed7e5b6cc996f5f83b834f984386004cb7311110c016839d70032973c8a4579"}