{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:YYGFEWAOY4BHMBU2X5BGTAGE6P","short_pith_number":"pith:YYGFEWAO","schema_version":"1.0","canonical_sha256":"c60c52580ec70276069abf426980c4f3ea5241e9adc84072d33c7d0dddedefde","source":{"kind":"arxiv","id":"2008.00065","version":1},"attestation_state":"computed","paper":{"title":"State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"A. C. Wilson, D. H. Slichter, D. J. Wineland, D. Leibfried, D. T. C. Allcock, K. C. McCormick, R. P. Mirin, S. L. Todaro, S. W. Nam, V. B. Verma","submitted_at":"2020-07-31T20:09:13Z","abstract_excerpt":"We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon detector. We determine the hyperfine qubit state of a single $^9$Be$^+$ ion held in a surface-electrode rf ion trap by counting state-dependent ion fluorescence photons with a superconducting nanowire single-photon detector (SNSPD) fabricated into the trap structure. The average readout fidelity is 0.9991(1), with a mean readout duration of 46 $\\mu$s, and is limited by the polarization impurity of the readout laser beam and by off-resonant optical pumping. Because there are no intervening optical elemen"},"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":"2008.00065","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-07-31T20:09:13Z","cross_cats_sorted":["cond-mat.supr-con","physics.atom-ph"],"title_canon_sha256":"b33b1063f1c831e48dc3516e2756c617fae203ad84e81afba7f32673fb45b34e","abstract_canon_sha256":"b89dd3ead79303634009244d76bd2902f3661e63828752cb40120077390f57cc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:06:11.510768Z","signature_b64":"bJA5uqe6Chve/8itMCHJ+AguVxmDhIY28B4U/mxv0dFt7xCuIu51cPqAA6dhAZSWZnUfl/uxQuTm5jgkPtPBDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c60c52580ec70276069abf426980c4f3ea5241e9adc84072d33c7d0dddedefde","last_reissued_at":"2026-07-05T02:06:11.510272Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:06:11.510272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"A. C. Wilson, D. H. Slichter, D. J. Wineland, D. Leibfried, D. T. C. Allcock, K. C. McCormick, R. P. Mirin, S. L. Todaro, S. W. Nam, V. B. Verma","submitted_at":"2020-07-31T20:09:13Z","abstract_excerpt":"We report high-fidelity state readout of a trapped ion qubit using a trap-integrated photon detector. We determine the hyperfine qubit state of a single $^9$Be$^+$ ion held in a surface-electrode rf ion trap by counting state-dependent ion fluorescence photons with a superconducting nanowire single-photon detector (SNSPD) fabricated into the trap structure. The average readout fidelity is 0.9991(1), with a mean readout duration of 46 $\\mu$s, and is limited by the polarization impurity of the readout laser beam and by off-resonant optical pumping. Because there are no intervening optical elemen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00065","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/2008.00065/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":"2008.00065","created_at":"2026-07-05T02:06:11.510342+00:00"},{"alias_kind":"arxiv_version","alias_value":"2008.00065v1","created_at":"2026-07-05T02:06:11.510342+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00065","created_at":"2026-07-05T02:06:11.510342+00:00"},{"alias_kind":"pith_short_12","alias_value":"YYGFEWAOY4BH","created_at":"2026-07-05T02:06:11.510342+00:00"},{"alias_kind":"pith_short_16","alias_value":"YYGFEWAOY4BHMBU2","created_at":"2026-07-05T02:06:11.510342+00:00"},{"alias_kind":"pith_short_8","alias_value":"YYGFEWAO","created_at":"2026-07-05T02:06:11.510342+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/YYGFEWAOY4BHMBU2X5BGTAGE6P","json":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P.json","graph_json":"https://pith.science/api/pith-number/YYGFEWAOY4BHMBU2X5BGTAGE6P/graph.json","events_json":"https://pith.science/api/pith-number/YYGFEWAOY4BHMBU2X5BGTAGE6P/events.json","paper":"https://pith.science/paper/YYGFEWAO"},"agent_actions":{"view_html":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P","download_json":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P.json","view_paper":"https://pith.science/paper/YYGFEWAO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2008.00065&json=true","fetch_graph":"https://pith.science/api/pith-number/YYGFEWAOY4BHMBU2X5BGTAGE6P/graph.json","fetch_events":"https://pith.science/api/pith-number/YYGFEWAOY4BHMBU2X5BGTAGE6P/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P/action/storage_attestation","attest_author":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P/action/author_attestation","sign_citation":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P/action/citation_signature","submit_replication":"https://pith.science/pith/YYGFEWAOY4BHMBU2X5BGTAGE6P/action/replication_record"}},"created_at":"2026-07-05T02:06:11.510342+00:00","updated_at":"2026-07-05T02:06:11.510342+00:00"}