{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:F4PT7SMFRXZB47MBCWWFQWSF3Q","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":"b011a1b1081d6b099e257549c9d0b3f2398c324c4b9d820ecebc346c25f763d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-24T00:59:27Z","title_canon_sha256":"33dfb962d227b3a9f27870e1b2417e8f4d40f3e7c468982fb466d88aed2a4a41"},"schema_version":"1.0","source":{"id":"1310.6448","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.6448","created_at":"2026-05-18T02:25:47Z"},{"alias_kind":"arxiv_version","alias_value":"1310.6448v3","created_at":"2026-05-18T02:25:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.6448","created_at":"2026-05-18T02:25:47Z"},{"alias_kind":"pith_short_12","alias_value":"F4PT7SMFRXZB","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"F4PT7SMFRXZB47MB","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"F4PT7SMF","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:c4b45f9f506023d514c512f19defea208c094e8b2c2aa18f3ad088ef7a404170","target":"graph","created_at":"2026-05-18T02:25:47Z","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 present methods and results of shot-by-shot correlation of noisy measurements to extract entangled state and process tomography in a superconducting qubit architecture. We show that averaging continuous values, rather than counting discrete thresholded values, is a valid tomographic strategy and is in fact the better choice in the low signal-to-noise regime. We show that the effort to measure $N$-body correlations from individual measurements scales exponentially with $N$, but with sufficient signal-to-noise the approach remains viable for few-body correlations. We provide a new protocol to","authors_text":"Blake R. Johnson, Colm A. Ryan, Jay M. Gambetta, Jerry M. Chow, Marcus P. da Silva, Oliver E. Dial, Thomas A. Ohki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-24T00:59:27Z","title":"Tomography via Correlation of Noisy Measurement Records"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.6448","kind":"arxiv","version":3},"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:fd41fd6a17f89ac1cc129103e952f5154c83fb16be65374cdd99a615d8e2eedc","target":"record","created_at":"2026-05-18T02:25:47Z","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":"b011a1b1081d6b099e257549c9d0b3f2398c324c4b9d820ecebc346c25f763d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-24T00:59:27Z","title_canon_sha256":"33dfb962d227b3a9f27870e1b2417e8f4d40f3e7c468982fb466d88aed2a4a41"},"schema_version":"1.0","source":{"id":"1310.6448","kind":"arxiv","version":3}},"canonical_sha256":"2f1f3fc9858df21e7d8115ac585a45dc2bb74efbc451a79c79141b5e3664fd74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f1f3fc9858df21e7d8115ac585a45dc2bb74efbc451a79c79141b5e3664fd74","first_computed_at":"2026-05-18T02:25:47.560394Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:47.560394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tBUzklUE9VCSxRm84i/iEJhYSsMB0hyNKETpiNRQI23Gxt1KAaRRwZ0Indt6JHUTBi5bA6VX5VdOzY6u8GaRAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:47.561027Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.6448","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd41fd6a17f89ac1cc129103e952f5154c83fb16be65374cdd99a615d8e2eedc","sha256:c4b45f9f506023d514c512f19defea208c094e8b2c2aa18f3ad088ef7a404170"],"state_sha256":"489c519c6f42c9c2ad09cdef1615f8ff2a709edd4deca41cbdfddd01c9151bad"}