{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GS3TERWB4J4GUN6WWSXF4MXAGA","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":"4ebaa097d3ff89e8abac6b352d14fe9c665736ebb261c501efe3a726f5b3cab1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2019-05-22T01:44:12Z","title_canon_sha256":"70c4921278409a6f8d0594b068aed09d7340fe5a4efeae64fc2a919f4df57bac"},"schema_version":"1.0","source":{"id":"1905.08916","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.08916","created_at":"2026-05-17T23:45:24Z"},{"alias_kind":"arxiv_version","alias_value":"1905.08916v1","created_at":"2026-05-17T23:45:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.08916","created_at":"2026-05-17T23:45:24Z"},{"alias_kind":"pith_short_12","alias_value":"GS3TERWB4J4G","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GS3TERWB4J4GUN6W","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GS3TERWB","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:1c39433bdd2f85224121122793103ad335efd993aa9920189cea9f1cbbf0eb89","target":"graph","created_at":"2026-05-17T23:45:24Z","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"},"paper":{"abstract_excerpt":"We construct a self-correcting CCZ state (the \"AutoCCZ\") with embedded delayed choice CZs for completing gate teleportations. Using the AutoCCZ state we create efficient surface code spacetime layouts for both a depth-limited circuit (a ripply-carry addition) and a Clifford-limited circuit (a QROM read). Our layouts account for distillation and routing, are based on plausible physical assumptions for a large-scale superconducting qubit platform, and suggest that circuit-level Toffoli parallelism (e.g. using a carry-lookahead adder instead of a ripple-carry adder) will not reduce the execution ","authors_text":"Austin G. Fowler, Craig Gidney","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2019-05-22T01:44:12Z","title":"Flexible layout of surface code computations using AutoCCZ states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08916","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":"sha256:16059b379a862c41ea428d538d33a181af9d73bd954fc6aad860ed1eb9442afb","target":"record","created_at":"2026-05-17T23:45:24Z","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":"4ebaa097d3ff89e8abac6b352d14fe9c665736ebb261c501efe3a726f5b3cab1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2019-05-22T01:44:12Z","title_canon_sha256":"70c4921278409a6f8d0594b068aed09d7340fe5a4efeae64fc2a919f4df57bac"},"schema_version":"1.0","source":{"id":"1905.08916","kind":"arxiv","version":1}},"canonical_sha256":"34b73246c1e2786a37d6b4ae5e32e0301e84bdde8c6ca4dac74aa1bc089f5ad9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34b73246c1e2786a37d6b4ae5e32e0301e84bdde8c6ca4dac74aa1bc089f5ad9","first_computed_at":"2026-05-17T23:45:24.880864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:24.880864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X72gzvH8CbxgUR1IdfKVCbkjMUsigD28Pz5RgU+garOTkAFaEeN+DJldDnT+qJceUGf3IU1PX0rUIx+muntCDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:24.881236Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.08916","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16059b379a862c41ea428d538d33a181af9d73bd954fc6aad860ed1eb9442afb","sha256:1c39433bdd2f85224121122793103ad335efd993aa9920189cea9f1cbbf0eb89"],"state_sha256":"9804cc3097f5306cc649e7568f187c997804404d7d64ffa90a7a8984e8054446"}