{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:OFJIRU723RMEAOSV7VU6LSG2LB","short_pith_number":"pith:OFJIRU72","schema_version":"1.0","canonical_sha256":"715288d3fadc58403a55fd69e5c8da5872c0bc2aeb4429e932ef1db800e1a545","source":{"kind":"arxiv","id":"1804.08194","version":1},"attestation_state":"computed","paper":{"title":"Nanotesla-level, shield-less, field-compensation-free, wave-mixing-enhanced body-temperature atomic magnetometry for biomagnetism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Eric Y. Zhu, E. W. Hagley, Feng Zhou, L. Deng, Yvonne L. Li","submitted_at":"2018-04-22T23:32:42Z","abstract_excerpt":"We report an optical inelastic-wave-mixing-enhanced atomic magnetometry technique that results in nT-level magnetic field detection at temperatures compatible with the human body without magnetic shielding, zero-field compensation, or high-frequency modulated phase-locking spectroscopy. Using Gaussian magnetic pulses that mimic the transient magnetic field produced by an action potential on a frog's nerve, we demonstrate more than 300,000-fold (550-fold) enhancement of magneto-optical rotation signal power spectral-density (power amplitude) over the conventional single-beam $\\Lambda-$scheme at"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1804.08194","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-04-22T23:32:42Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"870d3969281494bfaba733ebdee2f09b4d490f07efecab91e3bca52f7711f3c4","abstract_canon_sha256":"456ef1ba9ba3d80839859c85c18fd8d5f8601750148b57b4dfc57201303e23cf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:49.230753Z","signature_b64":"NyuHwdBR/usObTQkGnYFbEsE2p2jkMQA4W0yIAQRixSmvL8eZQwPvyBFuDtZpoADd4MM50W4eTqxE3Ltow11Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"715288d3fadc58403a55fd69e5c8da5872c0bc2aeb4429e932ef1db800e1a545","last_reissued_at":"2026-05-18T00:17:49.229209Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:49.229209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Nanotesla-level, shield-less, field-compensation-free, wave-mixing-enhanced body-temperature atomic magnetometry for biomagnetism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Eric Y. Zhu, E. W. Hagley, Feng Zhou, L. Deng, Yvonne L. Li","submitted_at":"2018-04-22T23:32:42Z","abstract_excerpt":"We report an optical inelastic-wave-mixing-enhanced atomic magnetometry technique that results in nT-level magnetic field detection at temperatures compatible with the human body without magnetic shielding, zero-field compensation, or high-frequency modulated phase-locking spectroscopy. Using Gaussian magnetic pulses that mimic the transient magnetic field produced by an action potential on a frog's nerve, we demonstrate more than 300,000-fold (550-fold) enhancement of magneto-optical rotation signal power spectral-density (power amplitude) over the conventional single-beam $\\Lambda-$scheme at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08194","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1804.08194","created_at":"2026-05-18T00:17:49.229311+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.08194v1","created_at":"2026-05-18T00:17:49.229311+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.08194","created_at":"2026-05-18T00:17:49.229311+00:00"},{"alias_kind":"pith_short_12","alias_value":"OFJIRU723RME","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"OFJIRU723RMEAOSV","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"OFJIRU72","created_at":"2026-05-18T12:32:43.782077+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB","json":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB.json","graph_json":"https://pith.science/api/pith-number/OFJIRU723RMEAOSV7VU6LSG2LB/graph.json","events_json":"https://pith.science/api/pith-number/OFJIRU723RMEAOSV7VU6LSG2LB/events.json","paper":"https://pith.science/paper/OFJIRU72"},"agent_actions":{"view_html":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB","download_json":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB.json","view_paper":"https://pith.science/paper/OFJIRU72","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.08194&json=true","fetch_graph":"https://pith.science/api/pith-number/OFJIRU723RMEAOSV7VU6LSG2LB/graph.json","fetch_events":"https://pith.science/api/pith-number/OFJIRU723RMEAOSV7VU6LSG2LB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB/action/storage_attestation","attest_author":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB/action/author_attestation","sign_citation":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB/action/citation_signature","submit_replication":"https://pith.science/pith/OFJIRU723RMEAOSV7VU6LSG2LB/action/replication_record"}},"created_at":"2026-05-18T00:17:49.229311+00:00","updated_at":"2026-05-18T00:17:49.229311+00:00"}