{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SJKZPCNWS6JWGKDDK6246XNROE","short_pith_number":"pith:SJKZPCNW","canonical_record":{"source":{"id":"2008.10181","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-24T03:49:06Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"59a37b314e091c0676ce2079f7744b91b393b5b840a375ff4a8e048a77705732","abstract_canon_sha256":"28d81d72750f644792a9a3dc88250c0aa86d53f347bc55038c3305419a7882b9"},"schema_version":"1.0"},"canonical_sha256":"92559789b6979363286357b5cf5db171367b212c2250a947de628ccc9b8f4bc1","source":{"kind":"arxiv","id":"2008.10181","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.10181","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.10181v2","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.10181","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_12","alias_value":"SJKZPCNWS6JW","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_16","alias_value":"SJKZPCNWS6JWGKDD","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_8","alias_value":"SJKZPCNW","created_at":"2026-07-05T01:44:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SJKZPCNWS6JWGKDDK6246XNROE","target":"record","payload":{"canonical_record":{"source":{"id":"2008.10181","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-24T03:49:06Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"59a37b314e091c0676ce2079f7744b91b393b5b840a375ff4a8e048a77705732","abstract_canon_sha256":"28d81d72750f644792a9a3dc88250c0aa86d53f347bc55038c3305419a7882b9"},"schema_version":"1.0"},"canonical_sha256":"92559789b6979363286357b5cf5db171367b212c2250a947de628ccc9b8f4bc1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:44:42.902895Z","signature_b64":"bT3X6CddF7AK+VruwuKZVcosg/ZZ/9TiQ6yIHEk+kJwJLnu4y7vRiRU/X7XDP4lROBF/okBZnIW0kFAx55RkBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92559789b6979363286357b5cf5db171367b212c2250a947de628ccc9b8f4bc1","last_reissued_at":"2026-07-05T01:44:42.902493Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:44:42.902493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.10181","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":"2026-07-05T01:44:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+R+rhcaq0m0qDdyRbkRdZyOML5YQvEnbTwnyZsx46FU/OCHDmHbcc770QKonm7k8qLqFBZEhxoo/3A2Cw/qDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:00:37.097837Z"},"content_sha256":"6f6f7800aa63868bbb774a9636375823f8514566c087c27f2770d23d4e7c139a","schema_version":"1.0","event_id":"sha256:6f6f7800aa63868bbb774a9636375823f8514566c087c27f2770d23d4e7c139a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SJKZPCNWS6JWGKDDK6246XNROE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analog of a quantum heat engine using a single-spin qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Franco Nori, K. Ono, S. Moriyama, S. N. Shevchenko, T. Mori","submitted_at":"2020-08-24T03:49:06Z","abstract_excerpt":"A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.10181","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.10181/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:44:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xjx804UmfpHl7rcjDYKFTnV4PBtjkCzkasLnw/6ndqWa4p6iYdjcTEIKjyd5KboSdMtNeoyuqowkvDvBuR8ZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:00:37.098415Z"},"content_sha256":"33d9d9ec24ab66a422cfc6abb74012cd469355ae02d8fe6cb87618f015d54d46","schema_version":"1.0","event_id":"sha256:33d9d9ec24ab66a422cfc6abb74012cd469355ae02d8fe6cb87618f015d54d46"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJKZPCNWS6JWGKDDK6246XNROE/bundle.json","state_url":"https://pith.science/pith/SJKZPCNWS6JWGKDDK6246XNROE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJKZPCNWS6JWGKDDK6246XNROE/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":"2026-08-03T18:00:37Z","links":{"resolver":"https://pith.science/pith/SJKZPCNWS6JWGKDDK6246XNROE","bundle":"https://pith.science/pith/SJKZPCNWS6JWGKDDK6246XNROE/bundle.json","state":"https://pith.science/pith/SJKZPCNWS6JWGKDDK6246XNROE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJKZPCNWS6JWGKDDK6246XNROE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SJKZPCNWS6JWGKDDK6246XNROE","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":"28d81d72750f644792a9a3dc88250c0aa86d53f347bc55038c3305419a7882b9","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-24T03:49:06Z","title_canon_sha256":"59a37b314e091c0676ce2079f7744b91b393b5b840a375ff4a8e048a77705732"},"schema_version":"1.0","source":{"id":"2008.10181","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.10181","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.10181v2","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.10181","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_12","alias_value":"SJKZPCNWS6JW","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_16","alias_value":"SJKZPCNWS6JWGKDD","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_8","alias_value":"SJKZPCNW","created_at":"2026-07-05T01:44:42Z"}],"graph_snapshots":[{"event_id":"sha256:33d9d9ec24ab66a422cfc6abb74012cd469355ae02d8fe6cb87618f015d54d46","target":"graph","created_at":"2026-07-05T01:44:42Z","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/2008.10181/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current.","authors_text":"Franco Nori, K. Ono, S. Moriyama, S. N. Shevchenko, T. Mori","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-24T03:49:06Z","title":"Analog of a quantum heat engine using a single-spin qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.10181","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":"sha256:6f6f7800aa63868bbb774a9636375823f8514566c087c27f2770d23d4e7c139a","target":"record","created_at":"2026-07-05T01:44:42Z","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":"28d81d72750f644792a9a3dc88250c0aa86d53f347bc55038c3305419a7882b9","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-08-24T03:49:06Z","title_canon_sha256":"59a37b314e091c0676ce2079f7744b91b393b5b840a375ff4a8e048a77705732"},"schema_version":"1.0","source":{"id":"2008.10181","kind":"arxiv","version":2}},"canonical_sha256":"92559789b6979363286357b5cf5db171367b212c2250a947de628ccc9b8f4bc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92559789b6979363286357b5cf5db171367b212c2250a947de628ccc9b8f4bc1","first_computed_at":"2026-07-05T01:44:42.902493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:44:42.902493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bT3X6CddF7AK+VruwuKZVcosg/ZZ/9TiQ6yIHEk+kJwJLnu4y7vRiRU/X7XDP4lROBF/okBZnIW0kFAx55RkBg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:44:42.902895Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.10181","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f6f7800aa63868bbb774a9636375823f8514566c087c27f2770d23d4e7c139a","sha256:33d9d9ec24ab66a422cfc6abb74012cd469355ae02d8fe6cb87618f015d54d46"],"state_sha256":"0d92a7b485cca15aab81ece24c3a1ba6ed2fada27c78fb693b475fadad5d5ead"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cv4McaYLwXioC8BiqemPb6oCZ/0J+iJioIfRd2ks6TnzeUx9xKMpp6MKn5LP7FJBegniu5Fm3Etcm1q3qdrGBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:00:37.103451Z","bundle_sha256":"24b59ba1d5919c439b17c2edca7a0f2d312888709c3caee6b0ae9d82a38bbac5"}}