{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LMMMJNXRO4UCZTBXJGOLXFP3MJ","short_pith_number":"pith:LMMMJNXR","canonical_record":{"source":{"id":"1703.03719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-10T15:37:36Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c5ce5a1fbf6d658e3fa85a9b07d2dae3a337d4d6041a04932eb0906c9e99c496","abstract_canon_sha256":"70f1748b96a2131e621483700da06f92656742c629317c832dce1a19a2106f97"},"schema_version":"1.0"},"canonical_sha256":"5b18c4b6f177282ccc37499cbb95fb624531ad06046d4528f2d923a88974aa8d","source":{"kind":"arxiv","id":"1703.03719","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.03719","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"arxiv_version","alias_value":"1703.03719v2","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.03719","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"pith_short_12","alias_value":"LMMMJNXRO4UC","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LMMMJNXRO4UCZTBX","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LMMMJNXR","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LMMMJNXRO4UCZTBXJGOLXFP3MJ","target":"record","payload":{"canonical_record":{"source":{"id":"1703.03719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-10T15:37:36Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"c5ce5a1fbf6d658e3fa85a9b07d2dae3a337d4d6041a04932eb0906c9e99c496","abstract_canon_sha256":"70f1748b96a2131e621483700da06f92656742c629317c832dce1a19a2106f97"},"schema_version":"1.0"},"canonical_sha256":"5b18c4b6f177282ccc37499cbb95fb624531ad06046d4528f2d923a88974aa8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:09.074726Z","signature_b64":"Q17ZUoiXWpzCnuB0MbgTFZIx5X+RdxENG+Et15yo9JEWE2YD7Hs2ldGxqYSPG0/OaXkVKMc/zx1OmeG4fi4rCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b18c4b6f177282ccc37499cbb95fb624531ad06046d4528f2d923a88974aa8d","last_reissued_at":"2026-05-18T00:36:09.073977Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:09.073977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.03719","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":"2026-05-18T00:36:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1kvulnZis+HB31LB2bxyER4CcAr9sUWk9PI636mkG4CkLAz3FsqdJ57dJHxwj8ZV/d/2NgF5FhZ5XzCsWCEZBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:17:56.876373Z"},"content_sha256":"64a0e4a5b37e50ab3ae254e63db0c4a177e4b1082177b0d6da005daa751c40b6","schema_version":"1.0","event_id":"sha256:64a0e4a5b37e50ab3ae254e63db0c4a177e4b1082177b0d6da005daa751c40b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LMMMJNXRO4UCZTBXJGOLXFP3MJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Thermal Machine as a Thermometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Jonatan Bohr Brask, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Patrick P. Hofer","submitted_at":"2017-03-10T15:37:36Z","abstract_excerpt":"We propose the use of a quantum thermal machine for low-temperature thermometry. A hot thermal reservoir coupled to the machine allows for simultaneously cooling the sample while determining its temperature without knowing the model-dependent coupling constants. In its most simple form, the proposed scheme works for all thermal machines which perform at Otto efficiency and can reach Carnot efficiency. We consider a circuit QED implementation which allows for precise thermometry down to $\\sim$15 mK with realistic parameters. Based on the quantum Fisher information, this is close to the optimal "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.03719","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":"2026-05-18T00:36:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8tvzATAcqtnw2lySflKCES6AqpqzJ43mbDq6uH3TQ+6g8eaPJt+tKhydondpERWQYMc8sTrRAmmlNAS3Sc6cBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:17:56.877118Z"},"content_sha256":"438cefe952f4edd478a08b66a70c3a15c86c3c5f23d6bb3354b2c7537961cd30","schema_version":"1.0","event_id":"sha256:438cefe952f4edd478a08b66a70c3a15c86c3c5f23d6bb3354b2c7537961cd30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/bundle.json","state_url":"https://pith.science/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/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":"2026-05-31T00:17:56Z","links":{"resolver":"https://pith.science/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ","bundle":"https://pith.science/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/bundle.json","state":"https://pith.science/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LMMMJNXRO4UCZTBXJGOLXFP3MJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LMMMJNXRO4UCZTBXJGOLXFP3MJ","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":"70f1748b96a2131e621483700da06f92656742c629317c832dce1a19a2106f97","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-10T15:37:36Z","title_canon_sha256":"c5ce5a1fbf6d658e3fa85a9b07d2dae3a337d4d6041a04932eb0906c9e99c496"},"schema_version":"1.0","source":{"id":"1703.03719","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.03719","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"arxiv_version","alias_value":"1703.03719v2","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.03719","created_at":"2026-05-18T00:36:09Z"},{"alias_kind":"pith_short_12","alias_value":"LMMMJNXRO4UC","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LMMMJNXRO4UCZTBX","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LMMMJNXR","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:438cefe952f4edd478a08b66a70c3a15c86c3c5f23d6bb3354b2c7537961cd30","target":"graph","created_at":"2026-05-18T00:36:09Z","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 the use of a quantum thermal machine for low-temperature thermometry. A hot thermal reservoir coupled to the machine allows for simultaneously cooling the sample while determining its temperature without knowing the model-dependent coupling constants. In its most simple form, the proposed scheme works for all thermal machines which perform at Otto efficiency and can reach Carnot efficiency. We consider a circuit QED implementation which allows for precise thermometry down to $\\sim$15 mK with realistic parameters. Based on the quantum Fisher information, this is close to the optimal ","authors_text":"Jonatan Bohr Brask, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Patrick P. Hofer","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-10T15:37:36Z","title":"Quantum Thermal Machine as a Thermometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.03719","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":"sha256:64a0e4a5b37e50ab3ae254e63db0c4a177e4b1082177b0d6da005daa751c40b6","target":"record","created_at":"2026-05-18T00:36:09Z","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":"70f1748b96a2131e621483700da06f92656742c629317c832dce1a19a2106f97","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-10T15:37:36Z","title_canon_sha256":"c5ce5a1fbf6d658e3fa85a9b07d2dae3a337d4d6041a04932eb0906c9e99c496"},"schema_version":"1.0","source":{"id":"1703.03719","kind":"arxiv","version":2}},"canonical_sha256":"5b18c4b6f177282ccc37499cbb95fb624531ad06046d4528f2d923a88974aa8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5b18c4b6f177282ccc37499cbb95fb624531ad06046d4528f2d923a88974aa8d","first_computed_at":"2026-05-18T00:36:09.073977Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:09.073977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q17ZUoiXWpzCnuB0MbgTFZIx5X+RdxENG+Et15yo9JEWE2YD7Hs2ldGxqYSPG0/OaXkVKMc/zx1OmeG4fi4rCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:09.074726Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.03719","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:64a0e4a5b37e50ab3ae254e63db0c4a177e4b1082177b0d6da005daa751c40b6","sha256:438cefe952f4edd478a08b66a70c3a15c86c3c5f23d6bb3354b2c7537961cd30"],"state_sha256":"754aad108e7009fac42c9a1ce641aeda43d1ae96bb32116c0a3d7bd31fd1217e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NeY7mC9OoD8sZTAbje2sAVzKG4Cd2/4GWVLsL+Us+PpU9Lgwc9o8v/XJ3tB/ej7wpZnCYtVQ5iHWrlmgkI/rAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T00:17:56.881286Z","bundle_sha256":"997df543dad322c2370764ae15e02805962ee4da3872596c4898e6f7e3c93f32"}}