{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:O3KHVOZA4L3AI5X5KZEOYWXZCD","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":"f2e3c48f1234c117a3d491c0163ef4e4405aff9767a1f09f021dcd7f25056b5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2004-08-10T00:15:33Z","title_canon_sha256":"6a174d7ae6dd5ac945ff01b498710a6a57899d25dc8d30e374ed23c3eda2c720"},"schema_version":"1.0","source":{"id":"quant-ph/0408063","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0408063","created_at":"2026-07-04T15:36:55Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0408063v2","created_at":"2026-07-04T15:36:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0408063","created_at":"2026-07-04T15:36:55Z"},{"alias_kind":"pith_short_12","alias_value":"O3KHVOZA4L3A","created_at":"2026-07-04T15:36:55Z"},{"alias_kind":"pith_short_16","alias_value":"O3KHVOZA4L3AI5X5","created_at":"2026-07-04T15:36:55Z"},{"alias_kind":"pith_short_8","alias_value":"O3KHVOZA","created_at":"2026-07-04T15:36:55Z"}],"graph_snapshots":[{"event_id":"sha256:5b137a91b88f477f3cfcd302bdc592edb9ed6c357e4529c3037e9c5e6f7701cf","target":"graph","created_at":"2026-07-04T15:36:55Z","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/0408063/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With growing success in experimental implementations it is critical to identify a \"gold standard\" for quantum information processing, a single measure of distance that can be used to compare and contrast different experiments. We enumerate a set of criteria such a distance measure must satisfy to be both experimentally and theoretically meaningful. We then assess a wide range of possible measures against these criteria, before making a recommendation as to the best measures to use in characterizing quantum information processing.","authors_text":"Alexei Gilchrist, Michael A. Nielsen, Nathan K. Langford","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2004-08-10T00:15:33Z","title":"Distance measures to compare real and ideal quantum processes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0408063","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":"sha256:9aee17ca832b3a4e944dad7aa5f0d7843766768a231bc2f85bd038a008cfe15f","target":"record","created_at":"2026-07-04T15:36:55Z","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":"f2e3c48f1234c117a3d491c0163ef4e4405aff9767a1f09f021dcd7f25056b5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2004-08-10T00:15:33Z","title_canon_sha256":"6a174d7ae6dd5ac945ff01b498710a6a57899d25dc8d30e374ed23c3eda2c720"},"schema_version":"1.0","source":{"id":"quant-ph/0408063","kind":"arxiv","version":2}},"canonical_sha256":"76d47abb20e2f60476fd5648ec5af910d98b3f17150bc4fb85c3b9ef075388c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76d47abb20e2f60476fd5648ec5af910d98b3f17150bc4fb85c3b9ef075388c9","first_computed_at":"2026-07-04T15:36:55.060410Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:36:55.060410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QY59TAdM2kBvfHoJG3u+uwnY6GJo6j9Ndrsbej/S9Qo0ivHO5JIzFmbP9Pl+q9En9mk2SFQZ5lqfBHhB6kf0CQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:36:55.060796Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0408063","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9aee17ca832b3a4e944dad7aa5f0d7843766768a231bc2f85bd038a008cfe15f","sha256:5b137a91b88f477f3cfcd302bdc592edb9ed6c357e4529c3037e9c5e6f7701cf"],"state_sha256":"5e1c4256faf339bf30b41114d9052cb7fe41baf985ca5492249c591e2554a11b"}