{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VJYN6V76TUCJT3RZB4G4Y32YX7","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":"3283d59522c29693a1b88c9cbe4b665773f9158bcffd77b71e7cdec5989dbb1d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-04-27T18:53:53Z","title_canon_sha256":"87bdeeb00e9149d20d0717eecbc987fe058359e8a23c4e1e14bfdfdda90d2fcc"},"schema_version":"1.0","source":{"id":"2104.13427","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.13427","created_at":"2026-07-05T02:35:54Z"},{"alias_kind":"arxiv_version","alias_value":"2104.13427v1","created_at":"2026-07-05T02:35:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.13427","created_at":"2026-07-05T02:35:54Z"},{"alias_kind":"pith_short_12","alias_value":"VJYN6V76TUCJ","created_at":"2026-07-05T02:35:54Z"},{"alias_kind":"pith_short_16","alias_value":"VJYN6V76TUCJT3RZ","created_at":"2026-07-05T02:35:54Z"},{"alias_kind":"pith_short_8","alias_value":"VJYN6V76","created_at":"2026-07-05T02:35:54Z"}],"graph_snapshots":[{"event_id":"sha256:b2c3946ce4d0b7ad03de5ef6386adb876aeece63cab23d882be3046fde4e9cc4","target":"graph","created_at":"2026-07-05T02:35:54Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2104.13427/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The thermodynamic properties of quantum heat engines are stochastic owing to the presence of thermal and quantum fluctuations. We here experimentally investigate the efficiency and nonequilibrium entropy production statistics of a spin-1/2 quantum Otto cycle. We first study the correlations between work and heat within a cycle by extracting their joint distribution for different driving times. We show that near perfect anticorrelation, corresponding to the tight-coupling condition, can be achieved. In this limit, the reconstructed efficiency distribution is peaked at the macroscopic efficiency","authors_text":"Eric Lutz, Jonas F. G. Santos, Roberto Serra, Tobias Denzler","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-04-27T18:53:53Z","title":"Nonequilibrium fluctuations of a quantum heat engine"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.13427","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:da803739bd890321ea74b36f998511a5aa9782e48dcae3e4523f5cef2338e638","target":"record","created_at":"2026-07-05T02:35:54Z","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":"3283d59522c29693a1b88c9cbe4b665773f9158bcffd77b71e7cdec5989dbb1d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-04-27T18:53:53Z","title_canon_sha256":"87bdeeb00e9149d20d0717eecbc987fe058359e8a23c4e1e14bfdfdda90d2fcc"},"schema_version":"1.0","source":{"id":"2104.13427","kind":"arxiv","version":1}},"canonical_sha256":"aa70df57fe9d0499ee390f0dcc6f58bfe2dc3f9283af662b0da26f2016e493e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa70df57fe9d0499ee390f0dcc6f58bfe2dc3f9283af662b0da26f2016e493e6","first_computed_at":"2026-07-05T02:35:54.783354Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:35:54.783354Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dahs4NN6kJOGKmz8/JsVyFzT2oWg62DJpKfTFC+bT8+WRjk8aDlZI8RMtZD4VpjVzY7Z+UabQ3REhmS0U6jaDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:35:54.783742Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.13427","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da803739bd890321ea74b36f998511a5aa9782e48dcae3e4523f5cef2338e638","sha256:b2c3946ce4d0b7ad03de5ef6386adb876aeece63cab23d882be3046fde4e9cc4"],"state_sha256":"ed5a2ab04d8a2bbc570ae2d3a63f1b085baed3c89beeb4fe6e389fe21ad01f8e"}