{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:R5NIOKSSOPNFGMMAGXMKBNYDOX","short_pith_number":"pith:R5NIOKSS","canonical_record":{"source":{"id":"1107.1021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-07-06T04:22:20Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"441be311e17eb5aaf2179167b936987be4a1932caa3acb1841577b7793f4c56c","abstract_canon_sha256":"c59ab0dd291c0bc42cbe1c39cce5dfd5f713590fd15433f870fd0f52d3cc188f"},"schema_version":"1.0"},"canonical_sha256":"8f5a872a5273da53318035d8a0b70375ffae186aa02486acac93e648b4ac34d8","source":{"kind":"arxiv","id":"1107.1021","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.1021","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"arxiv_version","alias_value":"1107.1021v1","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.1021","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"pith_short_12","alias_value":"R5NIOKSSOPNF","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"R5NIOKSSOPNFGMMA","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"R5NIOKSS","created_at":"2026-05-18T12:26:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:R5NIOKSSOPNFGMMAGXMKBNYDOX","target":"record","payload":{"canonical_record":{"source":{"id":"1107.1021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-07-06T04:22:20Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"441be311e17eb5aaf2179167b936987be4a1932caa3acb1841577b7793f4c56c","abstract_canon_sha256":"c59ab0dd291c0bc42cbe1c39cce5dfd5f713590fd15433f870fd0f52d3cc188f"},"schema_version":"1.0"},"canonical_sha256":"8f5a872a5273da53318035d8a0b70375ffae186aa02486acac93e648b4ac34d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:24.364808Z","signature_b64":"WbwO7J5mvjxP0F4ClsGqn1Br2xvfz0N8AwEIMj0AeBgtnY7NnMEMDwOTXzlTHVMApy1or60YEAF+9LQ4OPP8Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f5a872a5273da53318035d8a0b70375ffae186aa02486acac93e648b4ac34d8","last_reissued_at":"2026-05-18T02:01:24.364230Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:24.364230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.1021","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":"2026-05-18T02:01:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pfyzx4bhovd1HCXhZmpByLdWvSMeD2V4whEydxgoMkjV0USyysfYxhek7eE6mDGRr+K/8EeKkq9jHWMQRXXmAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:05:56.933256Z"},"content_sha256":"091c7524d2dc5ac5de14dad0ae43aabc8fec82cc727e1943d27e2099c8ca0d65","schema_version":"1.0","event_id":"sha256:091c7524d2dc5ac5de14dad0ae43aabc8fec82cc727e1943d27e2099c8ca0d65"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:R5NIOKSSOPNFGMMAGXMKBNYDOX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optogalvanic Spectroscopy of Metastable States in Yb^{+}","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"B. G. Norton, D. Kielpinski, E. W. Streed, M. J. Petrasiunas, T. J. Weinhold","submitted_at":"2011-07-06T04:22:20Z","abstract_excerpt":"The metastable ^{2}F_{7/2} and ^{2}D_{3/2} states of Yb^{+} are of interest for applications in metrology and quantum information and also act as dark states in laser cooling. These metastable states are commonly repumped to the ground state via the 638.6 nm ^{2}F_{7/2} -- ^{1}D[5/2]_{5/2} and 935.2 nm ^{2}D_{3/2} -- ^{3}D[3/2]_{1/2} transitions. We have performed optogalvanic spectroscopy of these transitions in Yb^{+} ions generated in a discharge. We measure the pressure broadening coefficient for the 638.6 nm transition to be 70 \\pm 10 MHz mbar^{-1}. We place an upper bound of 375 MHz/nucl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.1021","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":"2026-05-18T02:01:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"74wqFzLMc9yozogSh/UnEf+lv8Tdmmw5J5Mnip/W7WA1uSLzdef98zaYFz7pFcUdMSOlcrlaXBae84QtBdKgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:05:56.933844Z"},"content_sha256":"f22070bdcb3220d4ec3513fe2cce4e8729b51d553b0b4c930ba924f96983e720","schema_version":"1.0","event_id":"sha256:f22070bdcb3220d4ec3513fe2cce4e8729b51d553b0b4c930ba924f96983e720"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/bundle.json","state_url":"https://pith.science/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/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":"2026-05-30T06:05:56Z","links":{"resolver":"https://pith.science/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX","bundle":"https://pith.science/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/bundle.json","state":"https://pith.science/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R5NIOKSSOPNFGMMAGXMKBNYDOX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:R5NIOKSSOPNFGMMAGXMKBNYDOX","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":"c59ab0dd291c0bc42cbe1c39cce5dfd5f713590fd15433f870fd0f52d3cc188f","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-07-06T04:22:20Z","title_canon_sha256":"441be311e17eb5aaf2179167b936987be4a1932caa3acb1841577b7793f4c56c"},"schema_version":"1.0","source":{"id":"1107.1021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.1021","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"arxiv_version","alias_value":"1107.1021v1","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.1021","created_at":"2026-05-18T02:01:24Z"},{"alias_kind":"pith_short_12","alias_value":"R5NIOKSSOPNF","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"R5NIOKSSOPNFGMMA","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"R5NIOKSS","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:f22070bdcb3220d4ec3513fe2cce4e8729b51d553b0b4c930ba924f96983e720","target":"graph","created_at":"2026-05-18T02:01:24Z","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":"The metastable ^{2}F_{7/2} and ^{2}D_{3/2} states of Yb^{+} are of interest for applications in metrology and quantum information and also act as dark states in laser cooling. These metastable states are commonly repumped to the ground state via the 638.6 nm ^{2}F_{7/2} -- ^{1}D[5/2]_{5/2} and 935.2 nm ^{2}D_{3/2} -- ^{3}D[3/2]_{1/2} transitions. We have performed optogalvanic spectroscopy of these transitions in Yb^{+} ions generated in a discharge. We measure the pressure broadening coefficient for the 638.6 nm transition to be 70 \\pm 10 MHz mbar^{-1}. We place an upper bound of 375 MHz/nucl","authors_text":"B. G. Norton, D. Kielpinski, E. W. Streed, M. J. Petrasiunas, T. J. Weinhold","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-07-06T04:22:20Z","title":"Optogalvanic Spectroscopy of Metastable States in Yb^{+}"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.1021","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":"sha256:091c7524d2dc5ac5de14dad0ae43aabc8fec82cc727e1943d27e2099c8ca0d65","target":"record","created_at":"2026-05-18T02:01:24Z","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":"c59ab0dd291c0bc42cbe1c39cce5dfd5f713590fd15433f870fd0f52d3cc188f","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-07-06T04:22:20Z","title_canon_sha256":"441be311e17eb5aaf2179167b936987be4a1932caa3acb1841577b7793f4c56c"},"schema_version":"1.0","source":{"id":"1107.1021","kind":"arxiv","version":1}},"canonical_sha256":"8f5a872a5273da53318035d8a0b70375ffae186aa02486acac93e648b4ac34d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f5a872a5273da53318035d8a0b70375ffae186aa02486acac93e648b4ac34d8","first_computed_at":"2026-05-18T02:01:24.364230Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:24.364230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WbwO7J5mvjxP0F4ClsGqn1Br2xvfz0N8AwEIMj0AeBgtnY7NnMEMDwOTXzlTHVMApy1or60YEAF+9LQ4OPP8Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:24.364808Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.1021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:091c7524d2dc5ac5de14dad0ae43aabc8fec82cc727e1943d27e2099c8ca0d65","sha256:f22070bdcb3220d4ec3513fe2cce4e8729b51d553b0b4c930ba924f96983e720"],"state_sha256":"2849923e99e4a0416d01a8f4063d8776feb40f805949ac99936fe7c5fe521ebf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i8ACx78ygD2B1CYRQ16cM9dt5IQF2167SJxgaWN9KOq5B4NkHeqWiqpBbDioYGKfb0UaXMM6lWKUPGph8FzKAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:05:56.937225Z","bundle_sha256":"1b34c06bea302ca9ddb9e9aaa6d7c22f97327fad07bb10cd603ba32215d5b5fc"}}