{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LIAH5U7Z7AI2MYT4WRLVYLP2I4","short_pith_number":"pith:LIAH5U7Z","canonical_record":{"source":{"id":"1512.05677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-17T17:21:13Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"4fd5471bef1f671630d216b20e0dcc4814fa7e8acd7f1a7ebe15ea17545531fb","abstract_canon_sha256":"5412f310d5e33c43049303e7c25d74f58937d07acdcfb3f800825a70bde5c129"},"schema_version":"1.0"},"canonical_sha256":"5a007ed3f9f811a6627cb4575c2dfa47303c31a00c85d9693b48121423c44d00","source":{"kind":"arxiv","id":"1512.05677","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05677","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05677v1","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05677","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"pith_short_12","alias_value":"LIAH5U7Z7AI2","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LIAH5U7Z7AI2MYT4","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LIAH5U7Z","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LIAH5U7Z7AI2MYT4WRLVYLP2I4","target":"record","payload":{"canonical_record":{"source":{"id":"1512.05677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-17T17:21:13Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"4fd5471bef1f671630d216b20e0dcc4814fa7e8acd7f1a7ebe15ea17545531fb","abstract_canon_sha256":"5412f310d5e33c43049303e7c25d74f58937d07acdcfb3f800825a70bde5c129"},"schema_version":"1.0"},"canonical_sha256":"5a007ed3f9f811a6627cb4575c2dfa47303c31a00c85d9693b48121423c44d00","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:17.850673Z","signature_b64":"xqecGAAo2bDc0iSTHc9iIfs/gC4jemtqidvB3t1Nqu5XQ0rUE3PzmUUVIq8gl14eaOHnGlkd67lAOGsaT4qvCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a007ed3f9f811a6627cb4575c2dfa47303c31a00c85d9693b48121423c44d00","last_reissued_at":"2026-05-18T01:11:17.850098Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:17.850098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.05677","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":"2026-05-18T01:11:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvVAjGzb5J8FjZx08uUyJrM+kJGXtfSwKf7bWZdtQBOYVw+PYwSnEgGU8rQeh/8y2ogMx4TZJmOEFVa3LFtxBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:01:39.849756Z"},"content_sha256":"72315d98fee546733b30168d570f5afc681dc34c99f54fca425af76b9115903f","schema_version":"1.0","event_id":"sha256:72315d98fee546733b30168d570f5afc681dc34c99f54fca425af76b9115903f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LIAH5U7Z7AI2MYT4WRLVYLP2I4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluation of trap-induced systematic frequency shifts for a multi-ion optical clock at the $10^{-19}$ level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"D. Kalincev, J. Keller, J. Kiethe, T. Burgermeister, T.E. Mehlst\\\"aubler","submitted_at":"2015-12-17T17:21:13Z","abstract_excerpt":"In order to improve the short-term stability of trapped-ion optical clocks, we are developing a frequency standard based on ${}^{115}$In${}^+$ / ${}^{172}$Yb${}^+$ Coulomb crystals. For this purpose, we have developed scalable segmented Paul traps which allow a high level of control for multiple ion ensembles. In this article, we detail on our recent results regarding the reduction of the leading sources of frequency uncertainty introduced by the ion trap: 2nd-order Doppler shifts due to micromotion and the heating of secular motion, as well as the black-body radiation shift due to warming of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05677","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":"2026-05-18T01:11:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5PRKH9gtWRcbvUuFIYFiV639dib4w/MAQ9+Rls1Z1CNkL7cLjd668ZVwI5/6dryEQy4A4BAIcQo2qRkyJ5XQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:01:39.850103Z"},"content_sha256":"97ef14bc2d63ed02ec5a19396ec5f0251fa2edd099afe66ce56c8d578268c613","schema_version":"1.0","event_id":"sha256:97ef14bc2d63ed02ec5a19396ec5f0251fa2edd099afe66ce56c8d578268c613"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/bundle.json","state_url":"https://pith.science/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/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":"2026-06-03T00:01:39Z","links":{"resolver":"https://pith.science/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4","bundle":"https://pith.science/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/bundle.json","state":"https://pith.science/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LIAH5U7Z7AI2MYT4WRLVYLP2I4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LIAH5U7Z7AI2MYT4WRLVYLP2I4","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":"5412f310d5e33c43049303e7c25d74f58937d07acdcfb3f800825a70bde5c129","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-17T17:21:13Z","title_canon_sha256":"4fd5471bef1f671630d216b20e0dcc4814fa7e8acd7f1a7ebe15ea17545531fb"},"schema_version":"1.0","source":{"id":"1512.05677","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05677","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05677v1","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05677","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"pith_short_12","alias_value":"LIAH5U7Z7AI2","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LIAH5U7Z7AI2MYT4","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LIAH5U7Z","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:97ef14bc2d63ed02ec5a19396ec5f0251fa2edd099afe66ce56c8d578268c613","target":"graph","created_at":"2026-05-18T01:11:17Z","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":"In order to improve the short-term stability of trapped-ion optical clocks, we are developing a frequency standard based on ${}^{115}$In${}^+$ / ${}^{172}$Yb${}^+$ Coulomb crystals. For this purpose, we have developed scalable segmented Paul traps which allow a high level of control for multiple ion ensembles. In this article, we detail on our recent results regarding the reduction of the leading sources of frequency uncertainty introduced by the ion trap: 2nd-order Doppler shifts due to micromotion and the heating of secular motion, as well as the black-body radiation shift due to warming of ","authors_text":"D. Kalincev, J. Keller, J. Kiethe, T. Burgermeister, T.E. Mehlst\\\"aubler","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-17T17:21:13Z","title":"Evaluation of trap-induced systematic frequency shifts for a multi-ion optical clock at the $10^{-19}$ level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05677","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":"sha256:72315d98fee546733b30168d570f5afc681dc34c99f54fca425af76b9115903f","target":"record","created_at":"2026-05-18T01:11:17Z","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":"5412f310d5e33c43049303e7c25d74f58937d07acdcfb3f800825a70bde5c129","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-17T17:21:13Z","title_canon_sha256":"4fd5471bef1f671630d216b20e0dcc4814fa7e8acd7f1a7ebe15ea17545531fb"},"schema_version":"1.0","source":{"id":"1512.05677","kind":"arxiv","version":1}},"canonical_sha256":"5a007ed3f9f811a6627cb4575c2dfa47303c31a00c85d9693b48121423c44d00","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a007ed3f9f811a6627cb4575c2dfa47303c31a00c85d9693b48121423c44d00","first_computed_at":"2026-05-18T01:11:17.850098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:17.850098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xqecGAAo2bDc0iSTHc9iIfs/gC4jemtqidvB3t1Nqu5XQ0rUE3PzmUUVIq8gl14eaOHnGlkd67lAOGsaT4qvCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:17.850673Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.05677","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72315d98fee546733b30168d570f5afc681dc34c99f54fca425af76b9115903f","sha256:97ef14bc2d63ed02ec5a19396ec5f0251fa2edd099afe66ce56c8d578268c613"],"state_sha256":"6d878d323f3eace72230170c211f374ac8a761090c1418479d4e55f0519954b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GtaCjjp8NnWkT3RaUwcYQGgN8WbLMDBE7OA05SfuknA1ct9/Z0m9qflFh/a+OtnTFePf0VRMOGusrdpo4epABQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T00:01:39.852049Z","bundle_sha256":"3ccac1d1a3afc657246079d18738e42c50bd758e54ed58915871db2697b2f80e"}}