{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:6COIM56YG2HJEMKTTY67AV2OLC","short_pith_number":"pith:6COIM56Y","canonical_record":{"source":{"id":"1604.00137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-04-01T05:59:43Z","cross_cats_sorted":[],"title_canon_sha256":"c57c63af6da84ecd204a123b5aa36f0e551e229b94853dc6fc8235086533255d","abstract_canon_sha256":"964d9aa078cd04d151c7b9e2938d862cec71032af8c3be2098bed6f57c4a9ba9"},"schema_version":"1.0"},"canonical_sha256":"f09c8677d8368e9231539e3df0574e58913d8a9439044e61ec68d0a89908836e","source":{"kind":"arxiv","id":"1604.00137","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.00137","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1604.00137v1","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.00137","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"6COIM56YG2HJ","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6COIM56YG2HJEMKT","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6COIM56Y","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:6COIM56YG2HJEMKTTY67AV2OLC","target":"record","payload":{"canonical_record":{"source":{"id":"1604.00137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-04-01T05:59:43Z","cross_cats_sorted":[],"title_canon_sha256":"c57c63af6da84ecd204a123b5aa36f0e551e229b94853dc6fc8235086533255d","abstract_canon_sha256":"964d9aa078cd04d151c7b9e2938d862cec71032af8c3be2098bed6f57c4a9ba9"},"schema_version":"1.0"},"canonical_sha256":"f09c8677d8368e9231539e3df0574e58913d8a9439044e61ec68d0a89908836e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:39.176652Z","signature_b64":"yxKKvEYyC6VGbF74n961RwF/UbLlqZjEmxrkV3oAqLtgIDJOT8wpzX3eg6EE++C0W5CzxePgu7BCY+65XdSZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f09c8677d8368e9231539e3df0574e58913d8a9439044e61ec68d0a89908836e","last_reissued_at":"2026-05-18T01:16:39.175965Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:39.175965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.00137","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":"2026-05-18T01:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aQu+qmuuY2Az8QUcGqVDHHsbGApvhCZcQg/ConBp8m+QRqLb/olWbNn62W9R65KZKJGo6eVdoUoZjQZPetOfDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:37:44.939466Z"},"content_sha256":"2fe3e7668b012db57a46dc30db8136b5c0e59cd5376cf8bd66003afd243977b6","schema_version":"1.0","event_id":"sha256:2fe3e7668b012db57a46dc30db8136b5c0e59cd5376cf8bd66003afd243977b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:6COIM56YG2HJEMKTTY67AV2OLC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Hatakeyama, A. Uchiyama, H. Arikawa, H. Kawamura, H. P. Yoshida, H. S. Nataraj, K. Harada, K. Hatanaka, K. Imai, K. Kato, K. Sakamoto, M. Itoh, S. Ando, S. Ezure, S. Ito, T. Aoki, T. Hayamizu, T. Inoue, T. Ishikawa, T. Murakami, T. Sato, T. Wakasa, Y. Sakemi, Y. Shimizu","submitted_at":"2016-04-01T05:59:43Z","abstract_excerpt":"We demonstrated a frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was successfully obtained by performing delayed self-homodyne detection of the beat signal between the repumping frequency and the 10th-order sideband component of the trapping light. Sweeping the trapping-light and repumping-light frequencies with keeping its frequency difference of 46 GHz was confirmed over 1 GHz by monitoring the Doppler absorption profile of I2. This t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.00137","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":"2026-05-18T01:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SGSmjrogSUJjWtH7JtANth86em4MVVjEy3faWld38N2OocpHIIvsMqAdo9c49uWIjvvn2H+pZ6vMSv8GNZ9hCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:37:44.940091Z"},"content_sha256":"610f1bd11bedac4fd55ff19c5c0851db21abc90e51627ee3138c81be153b7cf2","schema_version":"1.0","event_id":"sha256:610f1bd11bedac4fd55ff19c5c0851db21abc90e51627ee3138c81be153b7cf2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6COIM56YG2HJEMKTTY67AV2OLC/bundle.json","state_url":"https://pith.science/pith/6COIM56YG2HJEMKTTY67AV2OLC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6COIM56YG2HJEMKTTY67AV2OLC/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":"2026-05-30T02:37:44Z","links":{"resolver":"https://pith.science/pith/6COIM56YG2HJEMKTTY67AV2OLC","bundle":"https://pith.science/pith/6COIM56YG2HJEMKTTY67AV2OLC/bundle.json","state":"https://pith.science/pith/6COIM56YG2HJEMKTTY67AV2OLC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6COIM56YG2HJEMKTTY67AV2OLC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:6COIM56YG2HJEMKTTY67AV2OLC","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":"964d9aa078cd04d151c7b9e2938d862cec71032af8c3be2098bed6f57c4a9ba9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-04-01T05:59:43Z","title_canon_sha256":"c57c63af6da84ecd204a123b5aa36f0e551e229b94853dc6fc8235086533255d"},"schema_version":"1.0","source":{"id":"1604.00137","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.00137","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1604.00137v1","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.00137","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"6COIM56YG2HJ","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6COIM56YG2HJEMKT","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6COIM56Y","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:610f1bd11bedac4fd55ff19c5c0851db21abc90e51627ee3138c81be153b7cf2","target":"graph","created_at":"2026-05-18T01:16:39Z","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 demonstrated a frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was successfully obtained by performing delayed self-homodyne detection of the beat signal between the repumping frequency and the 10th-order sideband component of the trapping light. Sweeping the trapping-light and repumping-light frequencies with keeping its frequency difference of 46 GHz was confirmed over 1 GHz by monitoring the Doppler absorption profile of I2. This t","authors_text":"A. Hatakeyama, A. Uchiyama, H. Arikawa, H. Kawamura, H. P. Yoshida, H. S. Nataraj, K. Harada, K. Hatanaka, K. Imai, K. Kato, K. Sakamoto, M. Itoh, S. Ando, S. Ezure, S. Ito, T. Aoki, T. Hayamizu, T. Inoue, T. Ishikawa, T. Murakami, T. Sato, T. Wakasa, Y. Sakemi, Y. Shimizu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-04-01T05:59:43Z","title":"Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.00137","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":"sha256:2fe3e7668b012db57a46dc30db8136b5c0e59cd5376cf8bd66003afd243977b6","target":"record","created_at":"2026-05-18T01:16:39Z","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":"964d9aa078cd04d151c7b9e2938d862cec71032af8c3be2098bed6f57c4a9ba9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-04-01T05:59:43Z","title_canon_sha256":"c57c63af6da84ecd204a123b5aa36f0e551e229b94853dc6fc8235086533255d"},"schema_version":"1.0","source":{"id":"1604.00137","kind":"arxiv","version":1}},"canonical_sha256":"f09c8677d8368e9231539e3df0574e58913d8a9439044e61ec68d0a89908836e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f09c8677d8368e9231539e3df0574e58913d8a9439044e61ec68d0a89908836e","first_computed_at":"2026-05-18T01:16:39.175965Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:39.175965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yxKKvEYyC6VGbF74n961RwF/UbLlqZjEmxrkV3oAqLtgIDJOT8wpzX3eg6EE++C0W5CzxePgu7BCY+65XdSZCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:39.176652Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.00137","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fe3e7668b012db57a46dc30db8136b5c0e59cd5376cf8bd66003afd243977b6","sha256:610f1bd11bedac4fd55ff19c5c0851db21abc90e51627ee3138c81be153b7cf2"],"state_sha256":"26af73e926f20a193e6b1af2f2c4989da34e64218ba7c7c5d27158df321950cd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ipVPNy722EsJ1yFT+t59fcftT4bNK5UMHoefupBRHemFPzaoCWPTX0Z0zuBkga6bNsNVNuY/AoYhsHZQITOCAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T02:37:44.943201Z","bundle_sha256":"4cd468de637d5dee3316cac540983e1104f5bcbb36da27b011531150b21858a9"}}