{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:A3Q33WXDJS3IQZKPVLKNAJWFIJ","short_pith_number":"pith:A3Q33WXD","schema_version":"1.0","canonical_sha256":"06e1bddae34cb688654faad4d026c54254fa7a30888cce2fa18d7710db268ec0","source":{"kind":"arxiv","id":"2411.09958","version":1},"attestation_state":"computed","paper":{"title":"Post-selection shifts the transition frequency of helium in an atomic beam","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Chang-Ling Zou, Jia-Dong Tang, Jin-Lu Wen, Jun-Feng Dong, Shui-Ming Hu, Ya-Nan Lv, Yu R. Sun","submitted_at":"2024-11-15T05:26:11Z","abstract_excerpt":"Post-selecting output states in measurements can effectively amplify weak signals and improve precision. However, post-selection effects may also introduce unintended biases in precision measurements. Here, we investigate the influence of post-selection in the precision spectroscopy of the $2^3S - 2^3P$ transition of helium ($^4$He) using an atomic beam. We directly observe that post-selection based on atomic positions causes a shift in the measured transition frequency, amounting to approximately -55 kHz. After accounting for this post-selection shift, we obtain a corrected frequency of $276,"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2411.09958","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-11-15T05:26:11Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"1188e84207bc17424de3d89862589cf58aaf91c88f86d209b82ecbb2d7351d01","abstract_canon_sha256":"d358d34037731a3da4a252af7757c48b3159436eaa6b0ac480c11b31184cd79c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:35:56.285432Z","signature_b64":"G9sDpeXqUR1Lkr2RLAw6HpUf/TPoB7DAeTPoqSQ6nB29RqvGdP/YJIbHPAANPMu3Kfo68mQ+LHu46Poe/mmoCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06e1bddae34cb688654faad4d026c54254fa7a30888cce2fa18d7710db268ec0","last_reissued_at":"2026-07-05T09:35:56.284908Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:35:56.284908Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Post-selection shifts the transition frequency of helium in an atomic beam","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Chang-Ling Zou, Jia-Dong Tang, Jin-Lu Wen, Jun-Feng Dong, Shui-Ming Hu, Ya-Nan Lv, Yu R. Sun","submitted_at":"2024-11-15T05:26:11Z","abstract_excerpt":"Post-selecting output states in measurements can effectively amplify weak signals and improve precision. However, post-selection effects may also introduce unintended biases in precision measurements. Here, we investigate the influence of post-selection in the precision spectroscopy of the $2^3S - 2^3P$ transition of helium ($^4$He) using an atomic beam. We directly observe that post-selection based on atomic positions causes a shift in the measured transition frequency, amounting to approximately -55 kHz. After accounting for this post-selection shift, we obtain a corrected frequency of $276,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.09958","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2411.09958/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2411.09958","created_at":"2026-07-05T09:35:56.284971+00:00"},{"alias_kind":"arxiv_version","alias_value":"2411.09958v1","created_at":"2026-07-05T09:35:56.284971+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.09958","created_at":"2026-07-05T09:35:56.284971+00:00"},{"alias_kind":"pith_short_12","alias_value":"A3Q33WXDJS3I","created_at":"2026-07-05T09:35:56.284971+00:00"},{"alias_kind":"pith_short_16","alias_value":"A3Q33WXDJS3IQZKP","created_at":"2026-07-05T09:35:56.284971+00:00"},{"alias_kind":"pith_short_8","alias_value":"A3Q33WXD","created_at":"2026-07-05T09:35:56.284971+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ","json":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ.json","graph_json":"https://pith.science/api/pith-number/A3Q33WXDJS3IQZKPVLKNAJWFIJ/graph.json","events_json":"https://pith.science/api/pith-number/A3Q33WXDJS3IQZKPVLKNAJWFIJ/events.json","paper":"https://pith.science/paper/A3Q33WXD"},"agent_actions":{"view_html":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ","download_json":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ.json","view_paper":"https://pith.science/paper/A3Q33WXD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2411.09958&json=true","fetch_graph":"https://pith.science/api/pith-number/A3Q33WXDJS3IQZKPVLKNAJWFIJ/graph.json","fetch_events":"https://pith.science/api/pith-number/A3Q33WXDJS3IQZKPVLKNAJWFIJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ/action/storage_attestation","attest_author":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ/action/author_attestation","sign_citation":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ/action/citation_signature","submit_replication":"https://pith.science/pith/A3Q33WXDJS3IQZKPVLKNAJWFIJ/action/replication_record"}},"created_at":"2026-07-05T09:35:56.284971+00:00","updated_at":"2026-07-05T09:35:56.284971+00:00"}