{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DOE6ZEOXXHPQHPNKEKD4AJ7DGL","short_pith_number":"pith:DOE6ZEOX","canonical_record":{"source":{"id":"1710.04673","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-12T18:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"60cde239b0c43f7e33beee4cc2d46403d9c39c2d9b036cd77ab2e4092a22f03b","abstract_canon_sha256":"41503bf30ad3426ec6002bf9521c3e094875c32aed010eb4339cdf03de1bd8d7"},"schema_version":"1.0"},"canonical_sha256":"1b89ec91d7b9df03bdaa2287c027e332c780ec3cb9c4988f210d1ed93e97a982","source":{"kind":"arxiv","id":"1710.04673","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.04673","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"arxiv_version","alias_value":"1710.04673v2","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.04673","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"pith_short_12","alias_value":"DOE6ZEOXXHPQ","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DOE6ZEOXXHPQHPNK","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DOE6ZEOX","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DOE6ZEOXXHPQHPNKEKD4AJ7DGL","target":"record","payload":{"canonical_record":{"source":{"id":"1710.04673","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-12T18:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"60cde239b0c43f7e33beee4cc2d46403d9c39c2d9b036cd77ab2e4092a22f03b","abstract_canon_sha256":"41503bf30ad3426ec6002bf9521c3e094875c32aed010eb4339cdf03de1bd8d7"},"schema_version":"1.0"},"canonical_sha256":"1b89ec91d7b9df03bdaa2287c027e332c780ec3cb9c4988f210d1ed93e97a982","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:47.017398Z","signature_b64":"YSG/wja6jpWY6p4HgKy0Eh2JKo+wcW5cqMsK9oqN+qijnwjZYnvlBRpgEJHU0YpmCk9+kYi1WnsSnRA/PEimCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b89ec91d7b9df03bdaa2287c027e332c780ec3cb9c4988f210d1ed93e97a982","last_reissued_at":"2026-05-18T00:15:47.016825Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:47.016825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.04673","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:15:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j1+9d8xlZFfhbNE4qjRCsdsd/jcBKQwvaYNpMPjfe350VT6XpfU6AA9BGO+UqS+nE4elYASinS+MrimHsKUWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:51:36.592839Z"},"content_sha256":"a707a088f42c615dd26e4c4c509d4365bbea4d93be80118075a0f53831aff95a","schema_version":"1.0","event_id":"sha256:a707a088f42c615dd26e4c4c509d4365bbea4d93be80118075a0f53831aff95a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DOE6ZEOXXHPQHPNKEKD4AJ7DGL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fundamental limits to frequency estimation: A comprehensive microscopic perspective","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andrea Smirne, Jan F. Haase, Jan Ko{\\l}ody\\'nski, Rafa{\\l} Demkowicz-Dobrza\\'nski, Susana F. Huelga","submitted_at":"2017-10-12T18:00:09Z","abstract_excerpt":"We consider a scenario in which qubit-like probes are used to sense an external field that linearly affects their energy splitting. Following the frequency estimation approach in which one optimizes the state and sensing time of the probes to maximize the sensitivity, we provide a systematic study of the attainable precision under the impact of noise originating from independent bosonic baths. We invoke an explicit microscopic derivation of the probe dynamics using the spin-boson model with weak coupling of arbitrary geometry and clarify how the secular approximation leads to a phase-covariant"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.04673","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:15:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pl6QdGFSHrHaUbZ5qy0zNi//XTyNi5JEHng/gVEHBMXrcCkT8SNkvUA+MnL0UzJmVmR2qapC8017KDmBb25qDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:51:36.593488Z"},"content_sha256":"fe661ef601299c9bf32aa59a4a33ef44204cb499f33553b03648c0a39336aef2","schema_version":"1.0","event_id":"sha256:fe661ef601299c9bf32aa59a4a33ef44204cb499f33553b03648c0a39336aef2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/bundle.json","state_url":"https://pith.science/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-04T06:51:36Z","links":{"resolver":"https://pith.science/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL","bundle":"https://pith.science/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/bundle.json","state":"https://pith.science/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DOE6ZEOXXHPQHPNKEKD4AJ7DGL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DOE6ZEOXXHPQHPNKEKD4AJ7DGL","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":"41503bf30ad3426ec6002bf9521c3e094875c32aed010eb4339cdf03de1bd8d7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-12T18:00:09Z","title_canon_sha256":"60cde239b0c43f7e33beee4cc2d46403d9c39c2d9b036cd77ab2e4092a22f03b"},"schema_version":"1.0","source":{"id":"1710.04673","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.04673","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"arxiv_version","alias_value":"1710.04673v2","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.04673","created_at":"2026-05-18T00:15:47Z"},{"alias_kind":"pith_short_12","alias_value":"DOE6ZEOXXHPQ","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DOE6ZEOXXHPQHPNK","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DOE6ZEOX","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:fe661ef601299c9bf32aa59a4a33ef44204cb499f33553b03648c0a39336aef2","target":"graph","created_at":"2026-05-18T00:15:47Z","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 consider a scenario in which qubit-like probes are used to sense an external field that linearly affects their energy splitting. Following the frequency estimation approach in which one optimizes the state and sensing time of the probes to maximize the sensitivity, we provide a systematic study of the attainable precision under the impact of noise originating from independent bosonic baths. We invoke an explicit microscopic derivation of the probe dynamics using the spin-boson model with weak coupling of arbitrary geometry and clarify how the secular approximation leads to a phase-covariant","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":"2017-10-12T18:00:09Z","title":"Fundamental limits to frequency estimation: A comprehensive microscopic perspective"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.04673","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:a707a088f42c615dd26e4c4c509d4365bbea4d93be80118075a0f53831aff95a","target":"record","created_at":"2026-05-18T00:15:47Z","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":"41503bf30ad3426ec6002bf9521c3e094875c32aed010eb4339cdf03de1bd8d7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-12T18:00:09Z","title_canon_sha256":"60cde239b0c43f7e33beee4cc2d46403d9c39c2d9b036cd77ab2e4092a22f03b"},"schema_version":"1.0","source":{"id":"1710.04673","kind":"arxiv","version":2}},"canonical_sha256":"1b89ec91d7b9df03bdaa2287c027e332c780ec3cb9c4988f210d1ed93e97a982","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b89ec91d7b9df03bdaa2287c027e332c780ec3cb9c4988f210d1ed93e97a982","first_computed_at":"2026-05-18T00:15:47.016825Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:47.016825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YSG/wja6jpWY6p4HgKy0Eh2JKo+wcW5cqMsK9oqN+qijnwjZYnvlBRpgEJHU0YpmCk9+kYi1WnsSnRA/PEimCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:47.017398Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.04673","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a707a088f42c615dd26e4c4c509d4365bbea4d93be80118075a0f53831aff95a","sha256:fe661ef601299c9bf32aa59a4a33ef44204cb499f33553b03648c0a39336aef2"],"state_sha256":"17bed332b7daa4bcff30498bdb95c07e5a72cc67a142015c61f3b5fdab13d97c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/E5O3qgSzSAj0e4CHeIhuDlSF2eQs4FF8GQpqqo0CmAiTZh+X6azX9D7qO6rEgTMbhW/yqghHuihGCQ92Uw3AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T06:51:36.596460Z","bundle_sha256":"c10b8babf07365cd66def395cfe693647b3a8b98153dccb2e4fcf496e5ba3d7a"}}