{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ADCUVL77QTXFKM34WTWWEN7SVK","short_pith_number":"pith:ADCUVL77","canonical_record":{"source":{"id":"1807.11268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-30T10:17:03Z","cross_cats_sorted":[],"title_canon_sha256":"f6339eb9a547eeb1d40ee214667c1bf718ae9d94fc9cf0bae376cd8e559b2a64","abstract_canon_sha256":"aa75947856dfdaf65420cd7eaf43f128e366910ada00b010810b6a60e7e1b3ce"},"schema_version":"1.0"},"canonical_sha256":"00c54aafff84ee55337cb4ed6237f2aa898b3dae66857e852816906fc9b11501","source":{"kind":"arxiv","id":"1807.11268","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11268","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11268v1","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11268","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"pith_short_12","alias_value":"ADCUVL77QTXF","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"ADCUVL77QTXFKM34","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"ADCUVL77","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ADCUVL77QTXFKM34WTWWEN7SVK","target":"record","payload":{"canonical_record":{"source":{"id":"1807.11268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-30T10:17:03Z","cross_cats_sorted":[],"title_canon_sha256":"f6339eb9a547eeb1d40ee214667c1bf718ae9d94fc9cf0bae376cd8e559b2a64","abstract_canon_sha256":"aa75947856dfdaf65420cd7eaf43f128e366910ada00b010810b6a60e7e1b3ce"},"schema_version":"1.0"},"canonical_sha256":"00c54aafff84ee55337cb4ed6237f2aa898b3dae66857e852816906fc9b11501","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:58.374645Z","signature_b64":"mm/eubyA1hlgJbPWa6WbR6CVDLkcITyetma09vewiKb1NGdPHVDJZ9zfaOw+ywFlmBgbLfv7orvmtbRS4Vi7Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00c54aafff84ee55337cb4ed6237f2aa898b3dae66857e852816906fc9b11501","last_reissued_at":"2026-05-18T00:01:58.374063Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:58.374063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.11268","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cu1QWxOeM9S4em+a7AU/DItCGKg6sNMFky5aLm19aK4uWICte0JE8aY74XmlUVel/TzF0heQa3kvY3mwA+8XAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:27:03.089448Z"},"content_sha256":"772c5e99adb35a02ffd6a2d223ac728ab69fc454aede03f3c93a8c434564d7c8","schema_version":"1.0","event_id":"sha256:772c5e99adb35a02ffd6a2d223ac728ab69fc454aede03f3c93a8c434564d7c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ADCUVL77QTXFKM34WTWWEN7SVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A dynamical approach to ancilla assisted quantum thermometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander Holm Kiilerich, Antonella De Pasquale, Vittorio Giovannetti","submitted_at":"2018-07-30T10:17:03Z","abstract_excerpt":"A scheme for improving the sensitivity of quantum thermometry is proposed where the sensing quantum system used to recover the temperature of an external bath is dynamically coupled with an external ancilla (a meter) via a Hamiltonian term $\\hat{H}_I$. At variance with previous approaches, our scheme relies neither on the presence of initial entanglement between the sensor and the meter, nor on the possibility of performing joint measurements on the two systems. The advantages we report arise from the fact that the presence of $\\hat{H}_I$ interferes with the bath-sensor interaction, transformi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11268","kind":"arxiv","version":1},"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":"2026-05-18T00:01:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FaPMmrc+9dFLF/bJ9lFT725X37nshzIj7gboGRh/CSxsE4ydJPPfkju5aleenFsBc/p8fvScVZRkXhntKyJTBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:27:03.090040Z"},"content_sha256":"a7773995b6ed93a0f2f37a7735ab28408f9086b8e603fdedf865dec8313b77e3","schema_version":"1.0","event_id":"sha256:a7773995b6ed93a0f2f37a7735ab28408f9086b8e603fdedf865dec8313b77e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ADCUVL77QTXFKM34WTWWEN7SVK/bundle.json","state_url":"https://pith.science/pith/ADCUVL77QTXFKM34WTWWEN7SVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ADCUVL77QTXFKM34WTWWEN7SVK/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":"2026-05-27T10:27:03Z","links":{"resolver":"https://pith.science/pith/ADCUVL77QTXFKM34WTWWEN7SVK","bundle":"https://pith.science/pith/ADCUVL77QTXFKM34WTWWEN7SVK/bundle.json","state":"https://pith.science/pith/ADCUVL77QTXFKM34WTWWEN7SVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ADCUVL77QTXFKM34WTWWEN7SVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ADCUVL77QTXFKM34WTWWEN7SVK","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":"aa75947856dfdaf65420cd7eaf43f128e366910ada00b010810b6a60e7e1b3ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-30T10:17:03Z","title_canon_sha256":"f6339eb9a547eeb1d40ee214667c1bf718ae9d94fc9cf0bae376cd8e559b2a64"},"schema_version":"1.0","source":{"id":"1807.11268","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11268","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11268v1","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11268","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"pith_short_12","alias_value":"ADCUVL77QTXF","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"ADCUVL77QTXFKM34","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"ADCUVL77","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:a7773995b6ed93a0f2f37a7735ab28408f9086b8e603fdedf865dec8313b77e3","target":"graph","created_at":"2026-05-18T00:01:58Z","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":"A scheme for improving the sensitivity of quantum thermometry is proposed where the sensing quantum system used to recover the temperature of an external bath is dynamically coupled with an external ancilla (a meter) via a Hamiltonian term $\\hat{H}_I$. At variance with previous approaches, our scheme relies neither on the presence of initial entanglement between the sensor and the meter, nor on the possibility of performing joint measurements on the two systems. The advantages we report arise from the fact that the presence of $\\hat{H}_I$ interferes with the bath-sensor interaction, transformi","authors_text":"Alexander Holm Kiilerich, Antonella De Pasquale, Vittorio Giovannetti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-30T10:17:03Z","title":"A dynamical approach to ancilla assisted quantum thermometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11268","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":"sha256:772c5e99adb35a02ffd6a2d223ac728ab69fc454aede03f3c93a8c434564d7c8","target":"record","created_at":"2026-05-18T00:01:58Z","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":"aa75947856dfdaf65420cd7eaf43f128e366910ada00b010810b6a60e7e1b3ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-30T10:17:03Z","title_canon_sha256":"f6339eb9a547eeb1d40ee214667c1bf718ae9d94fc9cf0bae376cd8e559b2a64"},"schema_version":"1.0","source":{"id":"1807.11268","kind":"arxiv","version":1}},"canonical_sha256":"00c54aafff84ee55337cb4ed6237f2aa898b3dae66857e852816906fc9b11501","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00c54aafff84ee55337cb4ed6237f2aa898b3dae66857e852816906fc9b11501","first_computed_at":"2026-05-18T00:01:58.374063Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:58.374063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mm/eubyA1hlgJbPWa6WbR6CVDLkcITyetma09vewiKb1NGdPHVDJZ9zfaOw+ywFlmBgbLfv7orvmtbRS4Vi7Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:58.374645Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.11268","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:772c5e99adb35a02ffd6a2d223ac728ab69fc454aede03f3c93a8c434564d7c8","sha256:a7773995b6ed93a0f2f37a7735ab28408f9086b8e603fdedf865dec8313b77e3"],"state_sha256":"4207aa8c1a728882624c67bc327bba8ff8e87c8815114a82e7a0d973d9572d0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HuCy2i6gM3/lpiEDUW8c8vjlC5eQNEjrGfgTLarKhel8OXrQGZ5hkxAFov3GtllCiZ0s1IXbUb99qRxaplZSAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T10:27:03.093275Z","bundle_sha256":"3094a0ff26d3ea6f155a5aaabf91c741d8067a812e81d5c981bed43d954a7c2a"}}