{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:6CM2ZZ2WDDFUGGUYHLAJS6GBTW","short_pith_number":"pith:6CM2ZZ2W","schema_version":"1.0","canonical_sha256":"f099ace75618cb431a983ac09978c19dbcf08ca579e529db65dc2aba5225db6f","source":{"kind":"arxiv","id":"2306.01670","version":1},"attestation_state":"computed","paper":{"title":"Cold highly charged ions in a radio-frequency trap with superconducting magnetic shielding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Andrea Graf, Christian Warnecke, Christopher Mayo, Claudia Volk, Elwin A. Dijck, Jos\\'e R. Crespo L\\'opez-Urrutia, Julia Eff, Kostas Georgiou, Lakshmi P. Kozhiparambil Sajith, Malte Wehrheim, Piet O. Schmidt, Ruben B. Henninger, Stepan Kokh, Thomas Pfeifer, Vera M. Sch\\\"afer","submitted_at":"2023-06-02T16:44:04Z","abstract_excerpt":"We implement sympathetic cooling of highly charged ions (HCI) by fully enclosing a linear Paul trap within a superconducting radio-frequency resonator. A quantization magnetic field applied while cooling down into the superconducting state remains present in the trap for centuries and external electromagnetic fluctuations are greatly suppressed. A magnetic field decay rate at the 10$^{-10}$ s$^{-1}$ level is found using trapped Doppler-cooled Be$^+$ ions as hyperfine-structure (hfs) qubits. Ramsey interferometry and spin-echo measurements on magnetically-sensitive hfs transitions yield coheren"},"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":"2306.01670","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2023-06-02T16:44:04Z","cross_cats_sorted":[],"title_canon_sha256":"8f85a585701b3618e3997af2bfd09e260c3a7aee9ef77885ad1aa4a207ba25e2","abstract_canon_sha256":"f9d49ba7777758a27c90956af3be9e1ec18d7b71aa71f1c6519d6915d21aa84b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:23:53.799180Z","signature_b64":"vB88R/460cXb0h57mDcDjoWRlAH6L12/4MzLKsUxBZvbEta6zfF8lMRAak226/GgTmJ109CqPGSFE3D/RClxCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f099ace75618cb431a983ac09978c19dbcf08ca579e529db65dc2aba5225db6f","last_reissued_at":"2026-07-05T08:23:53.798715Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:23:53.798715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cold highly charged ions in a radio-frequency trap with superconducting magnetic shielding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Andrea Graf, Christian Warnecke, Christopher Mayo, Claudia Volk, Elwin A. Dijck, Jos\\'e R. Crespo L\\'opez-Urrutia, Julia Eff, Kostas Georgiou, Lakshmi P. Kozhiparambil Sajith, Malte Wehrheim, Piet O. Schmidt, Ruben B. Henninger, Stepan Kokh, Thomas Pfeifer, Vera M. Sch\\\"afer","submitted_at":"2023-06-02T16:44:04Z","abstract_excerpt":"We implement sympathetic cooling of highly charged ions (HCI) by fully enclosing a linear Paul trap within a superconducting radio-frequency resonator. A quantization magnetic field applied while cooling down into the superconducting state remains present in the trap for centuries and external electromagnetic fluctuations are greatly suppressed. A magnetic field decay rate at the 10$^{-10}$ s$^{-1}$ level is found using trapped Doppler-cooled Be$^+$ ions as hyperfine-structure (hfs) qubits. Ramsey interferometry and spin-echo measurements on magnetically-sensitive hfs transitions yield coheren"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.01670","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/2306.01670/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":"2306.01670","created_at":"2026-07-05T08:23:53.798767+00:00"},{"alias_kind":"arxiv_version","alias_value":"2306.01670v1","created_at":"2026-07-05T08:23:53.798767+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.01670","created_at":"2026-07-05T08:23:53.798767+00:00"},{"alias_kind":"pith_short_12","alias_value":"6CM2ZZ2WDDFU","created_at":"2026-07-05T08:23:53.798767+00:00"},{"alias_kind":"pith_short_16","alias_value":"6CM2ZZ2WDDFUGGUY","created_at":"2026-07-05T08:23:53.798767+00:00"},{"alias_kind":"pith_short_8","alias_value":"6CM2ZZ2W","created_at":"2026-07-05T08:23:53.798767+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/6CM2ZZ2WDDFUGGUYHLAJS6GBTW","json":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW.json","graph_json":"https://pith.science/api/pith-number/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/graph.json","events_json":"https://pith.science/api/pith-number/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/events.json","paper":"https://pith.science/paper/6CM2ZZ2W"},"agent_actions":{"view_html":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW","download_json":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW.json","view_paper":"https://pith.science/paper/6CM2ZZ2W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2306.01670&json=true","fetch_graph":"https://pith.science/api/pith-number/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/graph.json","fetch_events":"https://pith.science/api/pith-number/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/action/storage_attestation","attest_author":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/action/author_attestation","sign_citation":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/action/citation_signature","submit_replication":"https://pith.science/pith/6CM2ZZ2WDDFUGGUYHLAJS6GBTW/action/replication_record"}},"created_at":"2026-07-05T08:23:53.798767+00:00","updated_at":"2026-07-05T08:23:53.798767+00:00"}