{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:KEKWUHRJ3WUCPDTSY6GSBE3RPH","short_pith_number":"pith:KEKWUHRJ","schema_version":"1.0","canonical_sha256":"51156a1e29dda8278e72c78d20937179cb40c5853290e7bf15876bb7e9ecf96b","source":{"kind":"arxiv","id":"2405.20827","version":2},"attestation_state":"computed","paper":{"title":"Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Arzhang Ardavan, Junjie Liu, Mikhail V. Vaganov, Sumin Lim","submitted_at":"2024-05-31T14:19:57Z","abstract_excerpt":"The realization of effective quantum error correction protocols remains a central challenge in the development of scalable quantum computers. Employing high-dimensional quantum systems (qudits) can offer more hardware-efficient protocols than qubit-based approaches. Using electron-nuclear double resonance, we implement a logical qubit encoded on the four states of a I=3/2 nuclear spin hyperfine-coupled to a S=1/2 electron spin qubit; the encoding protects against the dominant decoherence mechanism in such systems, fluctuations of the quantizing magnetic field. We explore the dynamics of the en"},"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":"2405.20827","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-31T14:19:57Z","cross_cats_sorted":[],"title_canon_sha256":"7874d9f0beec39d815543719fba564c5679facea2a3b1b90bb0331876179ed48","abstract_canon_sha256":"cff8683a21cbc1ece0989658cc7cccdbaecd70237c88e467f5f2c0ad2dbbbe2d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:31:44.043170Z","signature_b64":"MboYunm2EbvhSmipDWqzJBvg0iQ8p2VfgPSpbKMijMYWIRN0K90nloSBgsD+cDPsYn9REbaOkJS23QpqfbekBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"51156a1e29dda8278e72c78d20937179cb40c5853290e7bf15876bb7e9ecf96b","last_reissued_at":"2026-07-05T10:31:44.042656Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:31:44.042656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Arzhang Ardavan, Junjie Liu, Mikhail V. Vaganov, Sumin Lim","submitted_at":"2024-05-31T14:19:57Z","abstract_excerpt":"The realization of effective quantum error correction protocols remains a central challenge in the development of scalable quantum computers. Employing high-dimensional quantum systems (qudits) can offer more hardware-efficient protocols than qubit-based approaches. Using electron-nuclear double resonance, we implement a logical qubit encoded on the four states of a I=3/2 nuclear spin hyperfine-coupled to a S=1/2 electron spin qubit; the encoding protects against the dominant decoherence mechanism in such systems, fluctuations of the quantizing magnetic field. We explore the dynamics of the en"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.20827","kind":"arxiv","version":2},"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/2405.20827/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":"2405.20827","created_at":"2026-07-05T10:31:44.042718+00:00"},{"alias_kind":"arxiv_version","alias_value":"2405.20827v2","created_at":"2026-07-05T10:31:44.042718+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.20827","created_at":"2026-07-05T10:31:44.042718+00:00"},{"alias_kind":"pith_short_12","alias_value":"KEKWUHRJ3WUC","created_at":"2026-07-05T10:31:44.042718+00:00"},{"alias_kind":"pith_short_16","alias_value":"KEKWUHRJ3WUCPDTS","created_at":"2026-07-05T10:31:44.042718+00:00"},{"alias_kind":"pith_short_8","alias_value":"KEKWUHRJ","created_at":"2026-07-05T10:31:44.042718+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2512.02156","citing_title":"Testing ER = EPR with Hydrogen","ref_index":43,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH","json":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH.json","graph_json":"https://pith.science/api/pith-number/KEKWUHRJ3WUCPDTSY6GSBE3RPH/graph.json","events_json":"https://pith.science/api/pith-number/KEKWUHRJ3WUCPDTSY6GSBE3RPH/events.json","paper":"https://pith.science/paper/KEKWUHRJ"},"agent_actions":{"view_html":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH","download_json":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH.json","view_paper":"https://pith.science/paper/KEKWUHRJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2405.20827&json=true","fetch_graph":"https://pith.science/api/pith-number/KEKWUHRJ3WUCPDTSY6GSBE3RPH/graph.json","fetch_events":"https://pith.science/api/pith-number/KEKWUHRJ3WUCPDTSY6GSBE3RPH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH/action/storage_attestation","attest_author":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH/action/author_attestation","sign_citation":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH/action/citation_signature","submit_replication":"https://pith.science/pith/KEKWUHRJ3WUCPDTSY6GSBE3RPH/action/replication_record"}},"created_at":"2026-07-05T10:31:44.042718+00:00","updated_at":"2026-07-05T10:31:44.042718+00:00"}