{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:KLW2WWDSKFPKWTF6MRH72NJ5KN","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":"08cf8697b1d70e9f9877ecbd13ab5def0b62b742d886d7762864a0b8894a0e1c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-15T01:16:14Z","title_canon_sha256":"612a1d989f703a42b8fb4c0f1c88131b9e40ee4ca52c9efad4c82e856734b325"},"schema_version":"1.0","source":{"id":"1307.3800","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3800","created_at":"2026-05-18T03:08:26Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3800v2","created_at":"2026-05-18T03:08:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3800","created_at":"2026-05-18T03:08:26Z"},{"alias_kind":"pith_short_12","alias_value":"KLW2WWDSKFPK","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KLW2WWDSKFPKWTF6","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KLW2WWDS","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:e8f5dd788df5695c46d9e1b0e844b26903d28528d1ffe9a0fff3c269bb5a1fbf","target":"graph","created_at":"2026-05-18T03:08:26Z","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 propose a statistical framework for the problem of parameter estimation from a noisy optomechanical system. The Cram\\'er-Rao lower bound on the estimation errors in the long-time limit is derived and compared with the errors of radiometer and expectation-maximization (EM) algorithms in the estimation of the force noise power. When applied to experimental data, the EM estimator is found to have the lowest error and follow the Cram\\'er-Rao bound most closely. Our analytic results are envisioned to be valuable to optomechanical experiment design, while the EM algorithm, with its ability to est","authors_text":"Glen I. Harris, Mankei Tsang, Shan Zheng Ang, Warwick P. Bowen","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-15T01:16:14Z","title":"Optomechanical parameter estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3800","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":"sha256:97f574055b09784cfdee67001880cabe596cd39905a5ed844f4258d8f5ded8eb","target":"record","created_at":"2026-05-18T03:08:26Z","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":"08cf8697b1d70e9f9877ecbd13ab5def0b62b742d886d7762864a0b8894a0e1c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-15T01:16:14Z","title_canon_sha256":"612a1d989f703a42b8fb4c0f1c88131b9e40ee4ca52c9efad4c82e856734b325"},"schema_version":"1.0","source":{"id":"1307.3800","kind":"arxiv","version":2}},"canonical_sha256":"52edab5872515eab4cbe644ffd353d5357c61e10129d910229d20687ad3d5a1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52edab5872515eab4cbe644ffd353d5357c61e10129d910229d20687ad3d5a1c","first_computed_at":"2026-05-18T03:08:26.836600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:08:26.836600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hbXDBh9l+rwuv09ZWjsyW9ep1nvGMxKanzqXyQauSRsZCHI4APxqYwMgRq3szNQLyoIVVPwZayiuULlQ06LZAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:08:26.837305Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.3800","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97f574055b09784cfdee67001880cabe596cd39905a5ed844f4258d8f5ded8eb","sha256:e8f5dd788df5695c46d9e1b0e844b26903d28528d1ffe9a0fff3c269bb5a1fbf"],"state_sha256":"cef520add78ab818134bbe7999fe98f6d6b8695906fc869f42f01aaee2bc5dfc"}