{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OVIL7BCHVNFMLS2JBMMUO4JKEV","short_pith_number":"pith:OVIL7BCH","canonical_record":{"source":{"id":"1902.08258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-21T20:51:35Z","cross_cats_sorted":[],"title_canon_sha256":"5ecc38650c99f57ff70c832272928cd35d9d83e4095f2062c49e82637ad5d3f2","abstract_canon_sha256":"1099a7e1037dccdc1cee65c134ba5194bac6c6ccacbe2a2e28f0087f4cfaa266"},"schema_version":"1.0"},"canonical_sha256":"7550bf8447ab4ac5cb490b1947712a2545dc06db9db304e8017bc7da67bfdd3f","source":{"kind":"arxiv","id":"1902.08258","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08258","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08258v1","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08258","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"pith_short_12","alias_value":"OVIL7BCHVNFM","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OVIL7BCHVNFMLS2J","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OVIL7BCH","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OVIL7BCHVNFMLS2JBMMUO4JKEV","target":"record","payload":{"canonical_record":{"source":{"id":"1902.08258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-21T20:51:35Z","cross_cats_sorted":[],"title_canon_sha256":"5ecc38650c99f57ff70c832272928cd35d9d83e4095f2062c49e82637ad5d3f2","abstract_canon_sha256":"1099a7e1037dccdc1cee65c134ba5194bac6c6ccacbe2a2e28f0087f4cfaa266"},"schema_version":"1.0"},"canonical_sha256":"7550bf8447ab4ac5cb490b1947712a2545dc06db9db304e8017bc7da67bfdd3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:57.852894Z","signature_b64":"9pEAPaPvPL/9FrozOR4YCbHnVvc14IlJrFZMKIU67ynBMrM45bnZi29SMfr62KJyK6iz8Oaa16Oto7BKgGZGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7550bf8447ab4ac5cb490b1947712a2545dc06db9db304e8017bc7da67bfdd3f","last_reissued_at":"2026-05-17T23:52:57.852395Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:57.852395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.08258","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:52:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/jLPXvy0X5ofiDCQkC0m4XbhVB8w/fYj/M1TQU5euPQqYODzMJJ4DIvae1SgGVTB/LD7Eki/k/KNM6WLO267AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T04:33:36.460292Z"},"content_sha256":"3ed2d75d257cb18761bc358918a75dee8bf4778fbc5ac5ffee796ec861ee6f98","schema_version":"1.0","event_id":"sha256:3ed2d75d257cb18761bc358918a75dee8bf4778fbc5ac5ffee796ec861ee6f98"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OVIL7BCHVNFMLS2JBMMUO4JKEV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Cold Atom Radio-Frequency Magnetometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Cameron Deans, Ferruccio Renzoni, Krishna Jadeja, Luca Marmugi, Michela Venturelli, Sindi Sula, Yuval Cohen","submitted_at":"2019-02-21T20:51:35Z","abstract_excerpt":"We propose and demonstrate a radio-frequency atomic magnetometer with sub-Doppler laser cooled rubidium-87. With a simple and compact design, our system demonstrates a sensitivity of $330~pT/\\sqrt{Hz}$ in an unshielded environment, thus matching or surpassing previously reported cold atoms designs. By merging the multiple uses and robustness of radio-frequency atomic magnetometers with the detailed control of laser cooling, our cold atom radio-frequency magnetometer has the potential to move applications of atomic magnetometry to high spatial resolution. Direct impact in metrology for applied "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08258","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:52:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SM3+d6RJ/dQ6H/k1q3V/VX2I4lsg2N2PFx4Cjnv8bFNk7LHaVCmiFwMfLkntkNt2qnyaB4Pzox7yvYFnP0JLCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T04:33:36.460648Z"},"content_sha256":"b4dca1b81d2751d23aa96796f4d4cc5a2ce1ad4e7d18d704fd0f147ddebc5afb","schema_version":"1.0","event_id":"sha256:b4dca1b81d2751d23aa96796f4d4cc5a2ce1ad4e7d18d704fd0f147ddebc5afb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/bundle.json","state_url":"https://pith.science/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-29T04:33:36Z","links":{"resolver":"https://pith.science/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV","bundle":"https://pith.science/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/bundle.json","state":"https://pith.science/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVIL7BCHVNFMLS2JBMMUO4JKEV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OVIL7BCHVNFMLS2JBMMUO4JKEV","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":"1099a7e1037dccdc1cee65c134ba5194bac6c6ccacbe2a2e28f0087f4cfaa266","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-21T20:51:35Z","title_canon_sha256":"5ecc38650c99f57ff70c832272928cd35d9d83e4095f2062c49e82637ad5d3f2"},"schema_version":"1.0","source":{"id":"1902.08258","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08258","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08258v1","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08258","created_at":"2026-05-17T23:52:57Z"},{"alias_kind":"pith_short_12","alias_value":"OVIL7BCHVNFM","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OVIL7BCHVNFMLS2J","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OVIL7BCH","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:b4dca1b81d2751d23aa96796f4d4cc5a2ce1ad4e7d18d704fd0f147ddebc5afb","target":"graph","created_at":"2026-05-17T23:52:57Z","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 propose and demonstrate a radio-frequency atomic magnetometer with sub-Doppler laser cooled rubidium-87. With a simple and compact design, our system demonstrates a sensitivity of $330~pT/\\sqrt{Hz}$ in an unshielded environment, thus matching or surpassing previously reported cold atoms designs. By merging the multiple uses and robustness of radio-frequency atomic magnetometers with the detailed control of laser cooling, our cold atom radio-frequency magnetometer has the potential to move applications of atomic magnetometry to high spatial resolution. Direct impact in metrology for applied ","authors_text":"Cameron Deans, Ferruccio Renzoni, Krishna Jadeja, Luca Marmugi, Michela Venturelli, Sindi Sula, Yuval Cohen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-21T20:51:35Z","title":"A Cold Atom Radio-Frequency Magnetometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08258","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":"sha256:3ed2d75d257cb18761bc358918a75dee8bf4778fbc5ac5ffee796ec861ee6f98","target":"record","created_at":"2026-05-17T23:52:57Z","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":"1099a7e1037dccdc1cee65c134ba5194bac6c6ccacbe2a2e28f0087f4cfaa266","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-02-21T20:51:35Z","title_canon_sha256":"5ecc38650c99f57ff70c832272928cd35d9d83e4095f2062c49e82637ad5d3f2"},"schema_version":"1.0","source":{"id":"1902.08258","kind":"arxiv","version":1}},"canonical_sha256":"7550bf8447ab4ac5cb490b1947712a2545dc06db9db304e8017bc7da67bfdd3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7550bf8447ab4ac5cb490b1947712a2545dc06db9db304e8017bc7da67bfdd3f","first_computed_at":"2026-05-17T23:52:57.852395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:57.852395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9pEAPaPvPL/9FrozOR4YCbHnVvc14IlJrFZMKIU67ynBMrM45bnZi29SMfr62KJyK6iz8Oaa16Oto7BKgGZGCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:57.852894Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.08258","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ed2d75d257cb18761bc358918a75dee8bf4778fbc5ac5ffee796ec861ee6f98","sha256:b4dca1b81d2751d23aa96796f4d4cc5a2ce1ad4e7d18d704fd0f147ddebc5afb"],"state_sha256":"b21e6829df88fdd1165af162f025e3077f9ba9768e8521c6429b60dfe3383763"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wERgMBenfrS4vMMVDlB9cTR0iK+4T0/5FXc7xSkPhSyPmy84sAJ2ZPQ0Qcvz/2WiDexgy8fm/oPt0awK+gh8CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T04:33:36.462708Z","bundle_sha256":"1f51f8e842793b31c7d455b0795f866db5aaf824cce96d0c027a56d8fa401c28"}}