{"paper":{"title":"Ablation Removal of Transport-Blocking Defects in Surface-Electrode Ion Traps","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A 532 nm pulsed laser removes transport-blocking defects from surface-electrode ion traps without breaking vacuum.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Matthew Aylett, Parsa Rahimi, Rares Barcan, Sebastian Weidt, Toby Maddock, Winfried Karl Hensinger","submitted_at":"2026-05-07T14:13:26Z","abstract_excerpt":"We demonstrate in situ removal of a transport-blocking defect on a surface-electrode ion trap device using a Q-switched Nd:YAG 532 nm pulsed ablation laser. This approach eliminates the need to vent and rebake the vacuum system, providing a low-overhead defect-remediation technique well suited for ion-shuttling architectures where system modifications typically incur substantial downtime - particularly in shuttling focussed experiments operating at temperatures that necessitate bakes. Additionally, the hardware used is readily available in many ion trap laboratories, making this solution attra"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We demonstrate in situ removal of a transport-blocking defect on a surface-electrode ion trap device using a Q-switched Nd:YAG 532 nm pulsed ablation laser. Following ablation, we observe near-unit shuttling success rates across the previously obstructed region and measure micromotion levels that remain within acceptable limits.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The ablation removes the defect without creating new surface contaminants, charging, or structural damage that would degrade ion lifetime, coherence, or future shuttling performance over extended operation.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A Q-switched Nd:YAG 532 nm pulsed laser ablates transport-blocking defects in surface-electrode ion traps in situ, restoring near-unit shuttling success rates without interrupting vacuum operation.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A 532 nm pulsed laser removes transport-blocking defects from surface-electrode ion traps without breaking vacuum.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"172815f3ce5273d09703df3f3d565f1afcd2741606f3fd6debf7bde5e356b2d9"},"source":{"id":"2605.06312","kind":"arxiv","version":2},"verdict":{"id":"1094b090-e1b1-4322-9c29-cd073733e77c","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T11:11:07.741492Z","strongest_claim":"We demonstrate in situ removal of a transport-blocking defect on a surface-electrode ion trap device using a Q-switched Nd:YAG 532 nm pulsed ablation laser. Following ablation, we observe near-unit shuttling success rates across the previously obstructed region and measure micromotion levels that remain within acceptable limits.","one_line_summary":"A Q-switched Nd:YAG 532 nm pulsed laser ablates transport-blocking defects in surface-electrode ion traps in situ, restoring near-unit shuttling success rates without interrupting vacuum operation.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The ablation removes the defect without creating new surface contaminants, charging, or structural damage that would degrade ion lifetime, coherence, or future shuttling performance over extended operation.","pith_extraction_headline":"A 532 nm pulsed laser removes transport-blocking defects from surface-electrode ion traps without breaking vacuum."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.06312/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T12:42:04.076254Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-20T08:33:42.075357Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T18:31:19.488437Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T12:49:27.436885Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"e3e6ff3cacaeefb6a5c4e8cb035c3846fff445f7d2f040bd89defe1eacc7762a"},"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"}