{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QXAJW3ZY32JHJV6LEME4J4XCWO","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":"3204c702f5699f1c28fcd621ba41eff3e6232cad3c78b30ce896d7b8825c782b","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T19:57:24Z","title_canon_sha256":"756361aed10c6e2fba06a8ad6e5688d3442857035842c49a7287c4c3645bc40e"},"schema_version":"1.0","source":{"id":"2605.24177","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.24177","created_at":"2026-05-26T01:02:50Z"},{"alias_kind":"arxiv_version","alias_value":"2605.24177v1","created_at":"2026-05-26T01:02:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.24177","created_at":"2026-05-26T01:02:50Z"},{"alias_kind":"pith_short_12","alias_value":"QXAJW3ZY32JH","created_at":"2026-05-26T01:02:50Z"},{"alias_kind":"pith_short_16","alias_value":"QXAJW3ZY32JHJV6L","created_at":"2026-05-26T01:02:50Z"},{"alias_kind":"pith_short_8","alias_value":"QXAJW3ZY","created_at":"2026-05-26T01:02:50Z"}],"graph_snapshots":[{"event_id":"sha256:9d0b03b5efd6c92ecbdb5d26c10129a23d3ba8ac7ae103a4c7060b4952b9584f","target":"graph","created_at":"2026-05-26T01:02:50Z","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/2605.24177/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The scalability and interpretability of message-passing (MP) decoding, such as (quaternary) Belief Propagation, remain open challenges in quantum error correction. Even for surface codes, arguably the first testbed for decoding methods, studies of improved MP decoders have mostly been restricted to small distances ($d \\lesssim 19$). Moreover, the mismatch with established message-passing theory limits the decoder's interpretability, making it unclear whether MP decoding can sustain its effectiveness at large system sizes. This work takes a step toward a more principled and interpretable MP dec","authors_text":"Boqing Zhang, Hanwen Yao, Henry D. Pfister, Siyuan Niu","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T19:57:24Z","title":"Towards Scalable Quaternary Message-Passing Decoding for Quantum Error Correction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.24177","kind":"arxiv","version":1},"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":"sha256:1d7ff7bf55bef1df601ffc02a2b99202b9cb0359c451cd9d9178c98b13c86240","target":"record","created_at":"2026-05-26T01:02:50Z","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":"3204c702f5699f1c28fcd621ba41eff3e6232cad3c78b30ce896d7b8825c782b","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T19:57:24Z","title_canon_sha256":"756361aed10c6e2fba06a8ad6e5688d3442857035842c49a7287c4c3645bc40e"},"schema_version":"1.0","source":{"id":"2605.24177","kind":"arxiv","version":1}},"canonical_sha256":"85c09b6f38de9274d7cb2309c4f2e2b38c2c77c2ac54f1efa1bf137c12d0d35a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85c09b6f38de9274d7cb2309c4f2e2b38c2c77c2ac54f1efa1bf137c12d0d35a","first_computed_at":"2026-05-26T01:02:50.842611Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:02:50.842611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e+geHoxLZ6ihcucKdVhL3ilbnLNJUPqjy3zZh0u8dCti/1FIwsDF2J/aSH+3oXpvLikMnIn1EIe5zGtgzw5AAg==","signature_status":"signed_v1","signed_at":"2026-05-26T01:02:50.843487Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.24177","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d7ff7bf55bef1df601ffc02a2b99202b9cb0359c451cd9d9178c98b13c86240","sha256:9d0b03b5efd6c92ecbdb5d26c10129a23d3ba8ac7ae103a4c7060b4952b9584f"],"state_sha256":"08c6f4f9dcfdc6b2252da50df9827e35154f26b767aefd97a2af44bbd30266d0"}