{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:4EMDZM6ZQKHE2Z77BFTHG37UNI","short_pith_number":"pith:4EMDZM6Z","canonical_record":{"source":{"id":"2202.11239","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-23T00:04:03Z","cross_cats_sorted":[],"title_canon_sha256":"36ed9a4a4336a8b029aaa0926c7f313612df2fbff8788c258193190e61efef25","abstract_canon_sha256":"8ebe0778ae93991b17c48797ea349bc11d7a312f0244bcbe7d7899f6aefd1d5e"},"schema_version":"1.0"},"canonical_sha256":"e1183cb3d9828e4d67ff0966736ff46a3a37adfab10745aa955292c8cd64feee","source":{"kind":"arxiv","id":"2202.11239","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.11239","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"arxiv_version","alias_value":"2202.11239v2","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.11239","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_12","alias_value":"4EMDZM6ZQKHE","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_16","alias_value":"4EMDZM6ZQKHE2Z77","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_8","alias_value":"4EMDZM6Z","created_at":"2026-07-05T04:24:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:4EMDZM6ZQKHE2Z77BFTHG37UNI","target":"record","payload":{"canonical_record":{"source":{"id":"2202.11239","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-23T00:04:03Z","cross_cats_sorted":[],"title_canon_sha256":"36ed9a4a4336a8b029aaa0926c7f313612df2fbff8788c258193190e61efef25","abstract_canon_sha256":"8ebe0778ae93991b17c48797ea349bc11d7a312f0244bcbe7d7899f6aefd1d5e"},"schema_version":"1.0"},"canonical_sha256":"e1183cb3d9828e4d67ff0966736ff46a3a37adfab10745aa955292c8cd64feee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:24:58.539052Z","signature_b64":"Bm2Gpe4G184TfUWwPfTvW2++/v0oxurQ4/ILpvQnQcm/dm9a8mtgcYZRmB0Ham2S3VPC6K17xNND1edNGtFgBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e1183cb3d9828e4d67ff0966736ff46a3a37adfab10745aa955292c8cd64feee","last_reissued_at":"2026-07-05T04:24:58.538555Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:24:58.538555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.11239","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:24:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bmgGVTDAljjL1m7e0Yfe1Vv5IdAU16fWXlWHmypLDReSznMTTa3VbEALIctNpuEoDc0MjbyReqyX6sZ0QLh+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T03:20:27.728660Z"},"content_sha256":"588e0a3dceec26ff742f90f6eefae406fd5b5fc53cda7abbad654757d424d8b9","schema_version":"1.0","event_id":"sha256:588e0a3dceec26ff742f90f6eefae406fd5b5fc53cda7abbad654757d424d8b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:4EMDZM6ZQKHE2Z77BFTHG37UNI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Modified MWPM Decoding Algorithm for Quantum Surface Codes Over Depolarizing Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chung-Chin Lu, Yaping Yuan","submitted_at":"2022-02-23T00:04:03Z","abstract_excerpt":"Quantum Surface codes are a kind of quantum topological stabilizer codes whose stabilizers and qubits are geometrically related. Due to their special structures, surface codes have great potential to lead people to large-scale quantum computation. In the minimum weight perfect matching (MWPM) decoding of surface codes, the bit-flip errors and phase-flip errors are assumed to be independent for simplicity. However, these two kinds of errors are likely to be correlated in the real world. In this paper, we propose a modification to MWPM decoding for surface codes to deal with the noises in depola"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.11239","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/2202.11239/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:24:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yhFXopHfHz5y7vg+PiyI8u8wWYVNoKKlN6xOiW83Izulg+iZxLLORuAoG6yQBEJgtdokv1V4HyZ9HAkccfUTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T03:20:27.729155Z"},"content_sha256":"b253fdd6005161e714d4ff25277d6a6584d336ae5674fab8b0301af14b39da6e","schema_version":"1.0","event_id":"sha256:b253fdd6005161e714d4ff25277d6a6584d336ae5674fab8b0301af14b39da6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/bundle.json","state_url":"https://pith.science/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-19T03:20:27Z","links":{"resolver":"https://pith.science/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI","bundle":"https://pith.science/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/bundle.json","state":"https://pith.science/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4EMDZM6ZQKHE2Z77BFTHG37UNI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:4EMDZM6ZQKHE2Z77BFTHG37UNI","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":"8ebe0778ae93991b17c48797ea349bc11d7a312f0244bcbe7d7899f6aefd1d5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-23T00:04:03Z","title_canon_sha256":"36ed9a4a4336a8b029aaa0926c7f313612df2fbff8788c258193190e61efef25"},"schema_version":"1.0","source":{"id":"2202.11239","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.11239","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"arxiv_version","alias_value":"2202.11239v2","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.11239","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_12","alias_value":"4EMDZM6ZQKHE","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_16","alias_value":"4EMDZM6ZQKHE2Z77","created_at":"2026-07-05T04:24:58Z"},{"alias_kind":"pith_short_8","alias_value":"4EMDZM6Z","created_at":"2026-07-05T04:24:58Z"}],"graph_snapshots":[{"event_id":"sha256:b253fdd6005161e714d4ff25277d6a6584d336ae5674fab8b0301af14b39da6e","target":"graph","created_at":"2026-07-05T04:24:58Z","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/2202.11239/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum Surface codes are a kind of quantum topological stabilizer codes whose stabilizers and qubits are geometrically related. Due to their special structures, surface codes have great potential to lead people to large-scale quantum computation. In the minimum weight perfect matching (MWPM) decoding of surface codes, the bit-flip errors and phase-flip errors are assumed to be independent for simplicity. However, these two kinds of errors are likely to be correlated in the real world. In this paper, we propose a modification to MWPM decoding for surface codes to deal with the noises in depola","authors_text":"Chung-Chin Lu, Yaping Yuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-23T00:04:03Z","title":"A Modified MWPM Decoding Algorithm for Quantum Surface Codes Over Depolarizing Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.11239","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":"sha256:588e0a3dceec26ff742f90f6eefae406fd5b5fc53cda7abbad654757d424d8b9","target":"record","created_at":"2026-07-05T04:24:58Z","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":"8ebe0778ae93991b17c48797ea349bc11d7a312f0244bcbe7d7899f6aefd1d5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-23T00:04:03Z","title_canon_sha256":"36ed9a4a4336a8b029aaa0926c7f313612df2fbff8788c258193190e61efef25"},"schema_version":"1.0","source":{"id":"2202.11239","kind":"arxiv","version":2}},"canonical_sha256":"e1183cb3d9828e4d67ff0966736ff46a3a37adfab10745aa955292c8cd64feee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e1183cb3d9828e4d67ff0966736ff46a3a37adfab10745aa955292c8cd64feee","first_computed_at":"2026-07-05T04:24:58.538555Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:24:58.538555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Bm2Gpe4G184TfUWwPfTvW2++/v0oxurQ4/ILpvQnQcm/dm9a8mtgcYZRmB0Ham2S3VPC6K17xNND1edNGtFgBA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:24:58.539052Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.11239","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:588e0a3dceec26ff742f90f6eefae406fd5b5fc53cda7abbad654757d424d8b9","sha256:b253fdd6005161e714d4ff25277d6a6584d336ae5674fab8b0301af14b39da6e"],"state_sha256":"25d9327d7c8185d8a1018ab240a9f155c1eed1900ed3141921d1689a6a23a80d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"acii+oVh2vn3FU6kQ0jLz4t275EaapGujP9GT8EqhvF/B6TUudfikMAWn8PmkMLFX6Yu1XUYDVJupCqKG+dNAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T03:20:27.734022Z","bundle_sha256":"e859da9622fc72381d65b2623e51a060e619983ab45e19d79fd64e070c474b6b"}}