{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MSAPFBOWDQ7XKFFX4BFY2G4HPM","short_pith_number":"pith:MSAPFBOW","canonical_record":{"source":{"id":"1906.04154","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-06-07T10:22:55Z","cross_cats_sorted":["physics.ins-det","physics.optics","quant-ph"],"title_canon_sha256":"76d50c704a975735a0ef1b9b4c640fd4bd36867d42df77515f9ffc52fc7bba31","abstract_canon_sha256":"c41d20fec8f69eddb793a882eb02dcce580537e585d2a2d187692204891000d8"},"schema_version":"1.0"},"canonical_sha256":"6480f285d61c3f7514b7e04b8d1b877b125e7753822e7c3f1280b10ac77ba94d","source":{"kind":"arxiv","id":"1906.04154","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.04154","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"arxiv_version","alias_value":"1906.04154v4","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.04154","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_12","alias_value":"MSAPFBOWDQ7X","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"MSAPFBOWDQ7XKFFX","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"MSAPFBOW","created_at":"2026-07-05T00:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MSAPFBOWDQ7XKFFX4BFY2G4HPM","target":"record","payload":{"canonical_record":{"source":{"id":"1906.04154","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-06-07T10:22:55Z","cross_cats_sorted":["physics.ins-det","physics.optics","quant-ph"],"title_canon_sha256":"76d50c704a975735a0ef1b9b4c640fd4bd36867d42df77515f9ffc52fc7bba31","abstract_canon_sha256":"c41d20fec8f69eddb793a882eb02dcce580537e585d2a2d187692204891000d8"},"schema_version":"1.0"},"canonical_sha256":"6480f285d61c3f7514b7e04b8d1b877b125e7753822e7c3f1280b10ac77ba94d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:30:15.327025Z","signature_b64":"13uP5JmcfFoNBT7+vFoNp86tL25ak6SVDwdSR8Wmgqf6niKXWq45wHUC1s2QImqmHlL4LhiUvtDhtZGAbWi8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6480f285d61c3f7514b7e04b8d1b877b125e7753822e7c3f1280b10ac77ba94d","last_reissued_at":"2026-07-05T00:30:15.326648Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:30:15.326648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.04154","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:30:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oUrlt+8rWk8jmlUGJNv1kOLW4vDS1AjXZhehQ4E76qjioduhuRT4rRoUleNRhoyv75x+ZQJqYVzfL6MU1Dp5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T14:50:13.567228Z"},"content_sha256":"c5ada914d738050c49d3c9cb0b28b1269b126021af5948b2cfceaf67aa78baec","schema_version":"1.0","event_id":"sha256:c5ada914d738050c49d3c9cb0b28b1269b126021af5948b2cfceaf67aa78baec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MSAPFBOWDQ7XKFFX4BFY2G4HPM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zeeman-tunable Modulation Transfer Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det","physics.optics","quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Charles M\\\"ohl, Charles S. Adams, Chloe So, Nicholas L. R. Spong, Teodora Ilieva, Yuechun Jiao","submitted_at":"2019-06-07T10:22:55Z","abstract_excerpt":"Active frequency stabilization of a laser to an atomic or molecular resonance underpins many modern-day AMO physics experiments. With a flat background and high signal-to-noise ratio, modulation transfer spectroscopy (MTS) offers an accurate and stable method for laser locking. Despite its benefits, however, the four-wave mixing process that is inherent to the MTS technique entails that the strongest modulation transfer signals are only observed for closed transitions, excluding MTS from numerous applications. Here, we report for the first time the observation of a magnetically tunable MTS err"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.04154","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.04154/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:30:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wu4D6oYchO3l5Lt08CXfmEJUpF+CA0X3beq6Dj4GsoymXMrVtOU/CN4Sc/rBodVIBaLyb567pXOaZP8t3NkeCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T14:50:13.567633Z"},"content_sha256":"a285b7514288b1e3041d6925d194377725df6b69be6d626e1e30bccc7cc3d426","schema_version":"1.0","event_id":"sha256:a285b7514288b1e3041d6925d194377725df6b69be6d626e1e30bccc7cc3d426"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/bundle.json","state_url":"https://pith.science/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/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":"2026-07-06T14:50:13Z","links":{"resolver":"https://pith.science/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM","bundle":"https://pith.science/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/bundle.json","state":"https://pith.science/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MSAPFBOWDQ7XKFFX4BFY2G4HPM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MSAPFBOWDQ7XKFFX4BFY2G4HPM","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":"c41d20fec8f69eddb793a882eb02dcce580537e585d2a2d187692204891000d8","cross_cats_sorted":["physics.ins-det","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-06-07T10:22:55Z","title_canon_sha256":"76d50c704a975735a0ef1b9b4c640fd4bd36867d42df77515f9ffc52fc7bba31"},"schema_version":"1.0","source":{"id":"1906.04154","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.04154","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"arxiv_version","alias_value":"1906.04154v4","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.04154","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_12","alias_value":"MSAPFBOWDQ7X","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"MSAPFBOWDQ7XKFFX","created_at":"2026-07-05T00:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"MSAPFBOW","created_at":"2026-07-05T00:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:a285b7514288b1e3041d6925d194377725df6b69be6d626e1e30bccc7cc3d426","target":"graph","created_at":"2026-07-05T00:30:15Z","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/1906.04154/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Active frequency stabilization of a laser to an atomic or molecular resonance underpins many modern-day AMO physics experiments. With a flat background and high signal-to-noise ratio, modulation transfer spectroscopy (MTS) offers an accurate and stable method for laser locking. Despite its benefits, however, the four-wave mixing process that is inherent to the MTS technique entails that the strongest modulation transfer signals are only observed for closed transitions, excluding MTS from numerous applications. Here, we report for the first time the observation of a magnetically tunable MTS err","authors_text":"Charles M\\\"ohl, Charles S. Adams, Chloe So, Nicholas L. R. Spong, Teodora Ilieva, Yuechun Jiao","cross_cats":["physics.ins-det","physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-06-07T10:22:55Z","title":"Zeeman-tunable Modulation Transfer Spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.04154","kind":"arxiv","version":4},"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:c5ada914d738050c49d3c9cb0b28b1269b126021af5948b2cfceaf67aa78baec","target":"record","created_at":"2026-07-05T00:30:15Z","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":"c41d20fec8f69eddb793a882eb02dcce580537e585d2a2d187692204891000d8","cross_cats_sorted":["physics.ins-det","physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-06-07T10:22:55Z","title_canon_sha256":"76d50c704a975735a0ef1b9b4c640fd4bd36867d42df77515f9ffc52fc7bba31"},"schema_version":"1.0","source":{"id":"1906.04154","kind":"arxiv","version":4}},"canonical_sha256":"6480f285d61c3f7514b7e04b8d1b877b125e7753822e7c3f1280b10ac77ba94d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6480f285d61c3f7514b7e04b8d1b877b125e7753822e7c3f1280b10ac77ba94d","first_computed_at":"2026-07-05T00:30:15.326648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:30:15.326648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"13uP5JmcfFoNBT7+vFoNp86tL25ak6SVDwdSR8Wmgqf6niKXWq45wHUC1s2QImqmHlL4LhiUvtDhtZGAbWi8Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:30:15.327025Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.04154","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5ada914d738050c49d3c9cb0b28b1269b126021af5948b2cfceaf67aa78baec","sha256:a285b7514288b1e3041d6925d194377725df6b69be6d626e1e30bccc7cc3d426"],"state_sha256":"f976a766add635367d8143ea92021c0701c28d6c2386bfe364deeca30dc502f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4fWMmgDfnUgyM6lT+i3wGSwM9ymu5rnQY4HX7ADt0se4Y3EtnvUktic2aJMdYQiPYtIL+2N1oV5ikX0ScnyABw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T14:50:13.569613Z","bundle_sha256":"26672502cf4c859c022e40aaef77522c8ef0a3408f36daa085001d9cf24acabe"}}