{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HGIPPFI67Y4ZPCYILG3JDW5WM5","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":"610af534610e49156657b87c11a5fd83bbaa73c6f9ee410fe6ddfb5e6e162f86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-31T15:55:07Z","title_canon_sha256":"6ea1da95c86f87d60fb97983ae6b29efa23ca7aac30b2a052c6599f096cc688c"},"schema_version":"1.0","source":{"id":"1807.11882","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11882","created_at":"2026-05-17T23:56:53Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11882v4","created_at":"2026-05-17T23:56:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11882","created_at":"2026-05-17T23:56:53Z"},{"alias_kind":"pith_short_12","alias_value":"HGIPPFI67Y4Z","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HGIPPFI67Y4ZPCYI","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HGIPPFI6","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:1d167a058988b624ad2e74809e4557da44e1e03fae02ca215074ff5f2b1940aa","target":"graph","created_at":"2026-05-17T23:56:53Z","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":"The laws of quantum mechanics allow to perform measurements whose precision supersedes results predicted by classical parameter estimation theory. That is, the precision bound imposed by the central limit theorem in the estimation of a broad class of parameters, like atomic frequencies in spectroscopy or external magnetic field in magnetometry, can be overcome when using quantum probes. Environmental noise, however, generally alters the ultimate precision that can be achieved in the estimation of an unknown parameter. This tutorial reviews recent theoretical work aimed at obtaining general pre","authors_text":"Andrea Smirne, Jan F. Haase, Jan Ko{\\l}ody\\'nski, Rafa{\\l} Demkowicz-Dobrza\\'nski, Susana F. Huelga","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-31T15:55:07Z","title":"Precision Limits in Quantum Metrology with Open Quantum Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11882","kind":"arxiv","version":4},"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":"sha256:5a04157ea059cec9fa857e725cd370897a4167cc60f80068a5c9346dfbb1ffca","target":"record","created_at":"2026-05-17T23:56:53Z","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":"610af534610e49156657b87c11a5fd83bbaa73c6f9ee410fe6ddfb5e6e162f86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-31T15:55:07Z","title_canon_sha256":"6ea1da95c86f87d60fb97983ae6b29efa23ca7aac30b2a052c6599f096cc688c"},"schema_version":"1.0","source":{"id":"1807.11882","kind":"arxiv","version":4}},"canonical_sha256":"3990f7951efe39978b0859b691dbb66770266c8cf89c8c0f867357f239370b18","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3990f7951efe39978b0859b691dbb66770266c8cf89c8c0f867357f239370b18","first_computed_at":"2026-05-17T23:56:53.105646Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:53.105646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"36nb9ItDzl5SpN079j9PiB/TmEJ9pc4qLioqCDU7YNdsQdu7uTJF1YYjbgP9f7Wiq01D6CNgCcvwS+shtcAzAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:53.106188Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.11882","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a04157ea059cec9fa857e725cd370897a4167cc60f80068a5c9346dfbb1ffca","sha256:1d167a058988b624ad2e74809e4557da44e1e03fae02ca215074ff5f2b1940aa"],"state_sha256":"a09a45e20c3ca5001f1126ec77e53ddfbebeb96c1934f5fe8372be12c3a4c62b"}