{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:7XIRBJK7LZMFEWZL4JF4CDZBPC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ec51d1281ef031f9fb7332581ddd11cdaf74429ca5062813dea19f918484d771","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-06T12:05:31Z","title_canon_sha256":"fd4125502b6aa7e3a32054fd6a88cee96e083e3c7bd6088b47ff700a6d74e887"},"schema_version":"1.0","source":{"id":"quant-ph/0202036","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0202036","created_at":"2026-07-04T14:45:53Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0202036v2","created_at":"2026-07-04T14:45:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0202036","created_at":"2026-07-04T14:45:53Z"},{"alias_kind":"pith_short_12","alias_value":"7XIRBJK7LZMF","created_at":"2026-07-04T14:45:53Z"},{"alias_kind":"pith_short_16","alias_value":"7XIRBJK7LZMFEWZL","created_at":"2026-07-04T14:45:53Z"},{"alias_kind":"pith_short_8","alias_value":"7XIRBJK7","created_at":"2026-07-04T14:45:53Z"}],"graph_snapshots":[{"event_id":"sha256:80c405a9a8f8d4147be7d7af44098d76f431205871f391bc396ecae904db014e","target":"graph","created_at":"2026-07-04T14:45:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/quant-ph/0202036/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The stabilization of a quantum computer by repeated error correction can be reduced almost entirely to repeated preparation of blocks of qubits in quantum codeword states. These are multi-particle entangled states with a high degree of symmetry. The required accuracy can be achieved by measuring parity checks, using imperfect apparatus, and rejecting states which fail them. This filtering process is considered for t-error-correcting codes with t>1. It is shown how to exploit the structure of the codeword and the check matrix, so that the filter is reduced to a minimal form where each parity ch","authors_text":"Andrew M. Steane","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2002-02-06T12:05:31Z","title":"Fast fault-tolerant filtering of quantum codewords"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0202036","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:748580fe06e61ea272b2e6fe98d4516c5c67bf4f72508483f024317401d6fac3","target":"record","created_at":"2026-07-04T14:45:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"ec51d1281ef031f9fb7332581ddd11cdaf74429ca5062813dea19f918484d771","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-06T12:05:31Z","title_canon_sha256":"fd4125502b6aa7e3a32054fd6a88cee96e083e3c7bd6088b47ff700a6d74e887"},"schema_version":"1.0","source":{"id":"quant-ph/0202036","kind":"arxiv","version":2}},"canonical_sha256":"fdd110a55f5e58525b2be24bc10f2178b30e2ded54327f25b6db77cd20713a55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fdd110a55f5e58525b2be24bc10f2178b30e2ded54327f25b6db77cd20713a55","first_computed_at":"2026-07-04T14:45:53.455120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:45:53.455120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F7ONNQPIG7zGqQocjX9DhVEBLSwubq6T6lAXUTz4LzOXqK3SrrlxifWDABy76xCLrBD704H7q8auYNlBMmhNBg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:45:53.455503Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0202036","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:748580fe06e61ea272b2e6fe98d4516c5c67bf4f72508483f024317401d6fac3","sha256:80c405a9a8f8d4147be7d7af44098d76f431205871f391bc396ecae904db014e"],"state_sha256":"1185a2509f036ebc268d37583bb8af34ec9e7c7f6d86376fd0bd76cb4f206760"}