{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:M66VWOPON7KLQLLX5OQ7FBWEEB","short_pith_number":"pith:M66VWOPO","canonical_record":{"source":{"id":"1705.09736","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-26T23:07:26Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"3711251600a9190def06c3f4b16d2ab6bfb05c001a80c193d833a68c0c47fa9d","abstract_canon_sha256":"f04faaa66a5e497c5413f32e63c2690f5e42b33b48cbc7b69e9d9c0790cf055d"},"schema_version":"1.0"},"canonical_sha256":"67bd5b39ee6fd4b82d77eba1f286c420466b52884dd56023dfd60d090f214400","source":{"kind":"arxiv","id":"1705.09736","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09736","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09736v1","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09736","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"pith_short_12","alias_value":"M66VWOPON7KL","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M66VWOPON7KLQLLX","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M66VWOPO","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:M66VWOPON7KLQLLX5OQ7FBWEEB","target":"record","payload":{"canonical_record":{"source":{"id":"1705.09736","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-26T23:07:26Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"3711251600a9190def06c3f4b16d2ab6bfb05c001a80c193d833a68c0c47fa9d","abstract_canon_sha256":"f04faaa66a5e497c5413f32e63c2690f5e42b33b48cbc7b69e9d9c0790cf055d"},"schema_version":"1.0"},"canonical_sha256":"67bd5b39ee6fd4b82d77eba1f286c420466b52884dd56023dfd60d090f214400","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:20.325601Z","signature_b64":"vBi04Y4tha59HRkn7EvWghA1u9R0NeSoQSMj8BxL5mIxIZPckP7NZO0Us9RJ6uShjabpURjD60r0sEKqSNT3CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67bd5b39ee6fd4b82d77eba1f286c420466b52884dd56023dfd60d090f214400","last_reissued_at":"2026-05-18T00:35:20.325139Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:20.325139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.09736","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":"2026-05-18T00:35:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iRmRLp5UGhdUhWrOXmm07SJ8KAwb73j4bwY8Y9TtPpBDGVCIwM8GYBi9939v44Ne1L8pd76QNHOnLGKmxEi5Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:22:07.579397Z"},"content_sha256":"00ada54a71dd9129f689ce92af2b4e5368afcb7403c138d7e7ae4fc34ca6733a","schema_version":"1.0","event_id":"sha256:00ada54a71dd9129f689ce92af2b4e5368afcb7403c138d7e7ae4fc34ca6733a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:M66VWOPON7KLQLLX5OQ7FBWEEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopy of a synthetic trapped ion qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"David Hucul, Eric R. Hudson, Justin E. Christensen, Wesley C. Campbell","submitted_at":"2017-05-26T23:07:26Z","abstract_excerpt":"$^{133}\\text{Ba}^+$ has been identified as an attractive ion for quantum information processing due to the unique combination of its spin-1/2 nucleus and visible wavelength electronic transitions. Using a microgram source of radioactive material, we trap and laser-cool the synthetic $A$ = 133 radioisotope of barium II in a radio-frequency ion trap. Using the same, single trapped atom, we measure the isotope shifts and hyperfine structure of the $6^2 \\text{P}_{1/2}$ $\\leftrightarrow$ $6^2 \\text{S}_{1/2}$ and $6^2 \\text{P}_{1/2}$ $\\leftrightarrow$ $5^2 \\text{D}_{3/2}$ electronic transitions that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09736","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":"2026-05-18T00:35:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0gTStO1HHBws0t8Ef1HkAScMiUrsynHKaBoOcLC/t2f8hn0lxFwTMncmSsEx+EHwTtr2fy/tcJCEwOluAoSVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:22:07.579863Z"},"content_sha256":"dac75d9a5b9ea6d2e9dec16da3fe666a5c74b82e4bf866b6c8d142447d9536ea","schema_version":"1.0","event_id":"sha256:dac75d9a5b9ea6d2e9dec16da3fe666a5c74b82e4bf866b6c8d142447d9536ea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/bundle.json","state_url":"https://pith.science/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/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":"2026-05-30T13:22:07Z","links":{"resolver":"https://pith.science/pith/M66VWOPON7KLQLLX5OQ7FBWEEB","bundle":"https://pith.science/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/bundle.json","state":"https://pith.science/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M66VWOPON7KLQLLX5OQ7FBWEEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:M66VWOPON7KLQLLX5OQ7FBWEEB","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":"f04faaa66a5e497c5413f32e63c2690f5e42b33b48cbc7b69e9d9c0790cf055d","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-26T23:07:26Z","title_canon_sha256":"3711251600a9190def06c3f4b16d2ab6bfb05c001a80c193d833a68c0c47fa9d"},"schema_version":"1.0","source":{"id":"1705.09736","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09736","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09736v1","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09736","created_at":"2026-05-18T00:35:20Z"},{"alias_kind":"pith_short_12","alias_value":"M66VWOPON7KL","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M66VWOPON7KLQLLX","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M66VWOPO","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:dac75d9a5b9ea6d2e9dec16da3fe666a5c74b82e4bf866b6c8d142447d9536ea","target":"graph","created_at":"2026-05-18T00:35:20Z","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":"$^{133}\\text{Ba}^+$ has been identified as an attractive ion for quantum information processing due to the unique combination of its spin-1/2 nucleus and visible wavelength electronic transitions. Using a microgram source of radioactive material, we trap and laser-cool the synthetic $A$ = 133 radioisotope of barium II in a radio-frequency ion trap. Using the same, single trapped atom, we measure the isotope shifts and hyperfine structure of the $6^2 \\text{P}_{1/2}$ $\\leftrightarrow$ $6^2 \\text{S}_{1/2}$ and $6^2 \\text{P}_{1/2}$ $\\leftrightarrow$ $5^2 \\text{D}_{3/2}$ electronic transitions that","authors_text":"David Hucul, Eric R. Hudson, Justin E. Christensen, Wesley C. Campbell","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-26T23:07:26Z","title":"Spectroscopy of a synthetic trapped ion qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09736","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":"sha256:00ada54a71dd9129f689ce92af2b4e5368afcb7403c138d7e7ae4fc34ca6733a","target":"record","created_at":"2026-05-18T00:35:20Z","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":"f04faaa66a5e497c5413f32e63c2690f5e42b33b48cbc7b69e9d9c0790cf055d","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-26T23:07:26Z","title_canon_sha256":"3711251600a9190def06c3f4b16d2ab6bfb05c001a80c193d833a68c0c47fa9d"},"schema_version":"1.0","source":{"id":"1705.09736","kind":"arxiv","version":1}},"canonical_sha256":"67bd5b39ee6fd4b82d77eba1f286c420466b52884dd56023dfd60d090f214400","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67bd5b39ee6fd4b82d77eba1f286c420466b52884dd56023dfd60d090f214400","first_computed_at":"2026-05-18T00:35:20.325139Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:20.325139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vBi04Y4tha59HRkn7EvWghA1u9R0NeSoQSMj8BxL5mIxIZPckP7NZO0Us9RJ6uShjabpURjD60r0sEKqSNT3CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:20.325601Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.09736","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00ada54a71dd9129f689ce92af2b4e5368afcb7403c138d7e7ae4fc34ca6733a","sha256:dac75d9a5b9ea6d2e9dec16da3fe666a5c74b82e4bf866b6c8d142447d9536ea"],"state_sha256":"08dde10a02bfdcf788fc30f80fb4d03f7f1ff27625dedf8c93f678564f0202fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T+tLIvc6i9RA59IRujz9MZVAg6m4eZPubMy3NGGWjkXW/j7ZoieR4x20+dHqb+8gdgDB4IcKZCxiqZr21xbQDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:22:07.581975Z","bundle_sha256":"ce4a86a399034a2ccb8b5a1fae362e9ad6f1d9bc3fac875f64b2c90eddcf247c"}}