{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:SUANPDX3MA2ILMNXEPHP5R6IK3","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":"864738cf708903abff1ac61e98cea72956382456370174c96fffcbc494c7af1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-19T19:29:05Z","title_canon_sha256":"e223a3b79ab4f271a47579d044bda082ccff37d274b7451464ddc7b8d7dbac70"},"schema_version":"1.0","source":{"id":"1104.3844","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.3844","created_at":"2026-05-18T02:22:02Z"},{"alias_kind":"arxiv_version","alias_value":"1104.3844v1","created_at":"2026-05-18T02:22:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.3844","created_at":"2026-05-18T02:22:02Z"},{"alias_kind":"pith_short_12","alias_value":"SUANPDX3MA2I","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SUANPDX3MA2ILMNX","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SUANPDX3","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:e48ca33912a834a8666380833186c3ec4198781925e75821e71494f6ef01dea4","target":"graph","created_at":"2026-05-18T02:22:02Z","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":"Quantum-enhanced metrology infers an unknown quantity with accuracy beyond the standard quantum limit (SQL). Feedback-based metrological techniques are promising for beating the SQL but devising the feedback procedures is difficult and inefficient. Here we introduce an efficient self-learning swarm-intelligence algorithm for devising feedback-based quantum metrological procedures. Our algorithm can be trained with simulated or real-world trials and accommodates experimental imperfections, losses, and decoherence.","authors_text":"Alexander Hentschel, Barry C. Sanders","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-19T19:29:05Z","title":"An Efficient Algorithm for Optimizing Adaptive Quantum Metrology Processes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.3844","kind":"arxiv","version":1},"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:f5ccc0087cd9adc5eb5d1cdca1b8eabebb3db10b919b9dbdfd9c7d12ca6f4872","target":"record","created_at":"2026-05-18T02:22:02Z","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":"864738cf708903abff1ac61e98cea72956382456370174c96fffcbc494c7af1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-19T19:29:05Z","title_canon_sha256":"e223a3b79ab4f271a47579d044bda082ccff37d274b7451464ddc7b8d7dbac70"},"schema_version":"1.0","source":{"id":"1104.3844","kind":"arxiv","version":1}},"canonical_sha256":"9500d78efb603485b1b723cefec7c856d6a0661d34f015b0ca7f7bb379dee34b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9500d78efb603485b1b723cefec7c856d6a0661d34f015b0ca7f7bb379dee34b","first_computed_at":"2026-05-18T02:22:02.077337Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:22:02.077337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uW6btOlClSsWwL+sKuvQqOYYntuMRMPoOPA4Qk5niw7BR0CK32blBp+xnEUMxZZnNvioIhiD8wB4nizUW5IXCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:22:02.078144Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.3844","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5ccc0087cd9adc5eb5d1cdca1b8eabebb3db10b919b9dbdfd9c7d12ca6f4872","sha256:e48ca33912a834a8666380833186c3ec4198781925e75821e71494f6ef01dea4"],"state_sha256":"aa57c1d8f06e4a321ed35e9a9a47d07a521a114db82d1b982c10d93c1f0d6643"}