{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QSZGAUJ4AQALKOZODWPISXP3RA","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":"802ac8a011ac836d7dad5cda23f9a9ab4a7a0b8aa6d20b5829ea4fc0cdfb418c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-04-09T16:29:44Z","title_canon_sha256":"1df72920f53de5a84c22129cf36fb42e42cf4eb75c8df5f162b876a95706e5b9"},"schema_version":"1.0","source":{"id":"1804.03089","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03089","created_at":"2026-05-18T00:10:54Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03089v2","created_at":"2026-05-18T00:10:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03089","created_at":"2026-05-18T00:10:54Z"},{"alias_kind":"pith_short_12","alias_value":"QSZGAUJ4AQAL","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QSZGAUJ4AQALKOZO","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QSZGAUJ4","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:627cec5622a84fcc973452a549fa1e0c22b36feb829960a09950455058e33f99","target":"graph","created_at":"2026-05-18T00:10:54Z","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":"When quantum information is spread over a system through nonclassical correlation, it makes retrieving information by local measurements difficult---making global measurement necessary for optimal parameter estimation. In this paper, we consider temperature estimation of a system in a Gibbs state and quantify the separation between the estimation performance of the global optimal measurement scheme and a greedy local measurement scheme by diagonal quantum discord. In a greedy local scheme, instead of global measurements, one performs sequential local measurement on subsystems, which is potenti","authors_text":"Akira Sone, Paola Cappellaro, Quntao Zhuang","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-04-09T16:29:44Z","title":"Quantifying precision loss in local quantum thermometry via diagonal discord"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03089","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:b624e52182330dff84ce8d9fac626af53513f2f0a0caa068f1a3f973e5e0d244","target":"record","created_at":"2026-05-18T00:10:54Z","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":"802ac8a011ac836d7dad5cda23f9a9ab4a7a0b8aa6d20b5829ea4fc0cdfb418c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-04-09T16:29:44Z","title_canon_sha256":"1df72920f53de5a84c22129cf36fb42e42cf4eb75c8df5f162b876a95706e5b9"},"schema_version":"1.0","source":{"id":"1804.03089","kind":"arxiv","version":2}},"canonical_sha256":"84b260513c0400b53b2e1d9e895dfb8803d3ba0371dcf82ae6e2fa46e2468b32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84b260513c0400b53b2e1d9e895dfb8803d3ba0371dcf82ae6e2fa46e2468b32","first_computed_at":"2026-05-18T00:10:54.326094Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:54.326094Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ON+LYboZmHQkbwtpZLoy+4Bi7msEZa1Fx/NfEoayAhxcCEByJ9D4GrigUtHp4jdXZixvzzjk2ABZ9QF1NweECg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:54.326750Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03089","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b624e52182330dff84ce8d9fac626af53513f2f0a0caa068f1a3f973e5e0d244","sha256:627cec5622a84fcc973452a549fa1e0c22b36feb829960a09950455058e33f99"],"state_sha256":"8fe41c1b44bf815883405c667d784834f79ed5f3560d2796a8c446629f1d5740"}