{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:TCGOADC3HQENEMLO4EKJW6I3L3","short_pith_number":"pith:TCGOADC3","canonical_record":{"source":{"id":"1607.05218","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-18T17:54:12Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"593bfa1504ecac394683aadf5bd195fdfc27892ab34862a7089cd803756105d1","abstract_canon_sha256":"a1f975510a5f9470b7d602ccc72a7fc469e972c8fe1aacdee759db87da368399"},"schema_version":"1.0"},"canonical_sha256":"988ce00c5b3c08d2316ee1149b791b5eedcdfca9b7bf3c3c390f680bc2b08d37","source":{"kind":"arxiv","id":"1607.05218","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.05218","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"1607.05218v2","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.05218","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"TCGOADC3HQEN","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"TCGOADC3HQENEMLO","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"TCGOADC3","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:TCGOADC3HQENEMLO4EKJW6I3L3","target":"record","payload":{"canonical_record":{"source":{"id":"1607.05218","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-18T17:54:12Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"593bfa1504ecac394683aadf5bd195fdfc27892ab34862a7089cd803756105d1","abstract_canon_sha256":"a1f975510a5f9470b7d602ccc72a7fc469e972c8fe1aacdee759db87da368399"},"schema_version":"1.0"},"canonical_sha256":"988ce00c5b3c08d2316ee1149b791b5eedcdfca9b7bf3c3c390f680bc2b08d37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:47.551928Z","signature_b64":"V5a0edskVcKFOn4pFOzkf2iYcfaES1ABXymszg3AgTktp9fy2cqkbfNvdb7qd1UALVLOsEUNw/2UCGauPDe0Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"988ce00c5b3c08d2316ee1149b791b5eedcdfca9b7bf3c3c390f680bc2b08d37","last_reissued_at":"2026-05-18T00:54:47.551417Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:47.551417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.05218","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":"2026-05-18T00:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k/IBUeCPi7rvFW4rfpUk8HBFaqjyovDrxr5A+SBWwiiIeJC6+25XZmSee0EZUnpyXz+6eE/WxKK1sxVKfqxSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:23:14.615095Z"},"content_sha256":"7586ae3be9e87b812f484ba3ee625c62c5001f219092591b3d9c1b6eb065567d","schema_version":"1.0","event_id":"sha256:7586ae3be9e87b812f484ba3ee625c62c5001f219092591b3d9c1b6eb065567d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:TCGOADC3HQENEMLO4EKJW6I3L3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Autonomous Quantum Refrigerator in a Circuit-QED Architecture Based on a Josephson Junction","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, Marcus Huber, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Patrick P. Hofer, Ralph Silva","submitted_at":"2016-07-18T17:54:12Z","abstract_excerpt":"An implementation of a small quantum absorption refrigerator in a circuit QED architecture is proposed. The setup consists of three harmonic oscillators coupled to a Josephson unction. The refrigerator is autonomous in the sense that it does not require any external control for cooling, but only thermal contact between the oscillators and heat baths at different temperatures. In addition, the setup features a built-in switch, which allows the cooling to be turned on and off. If timing control is available, this enables the possibility for coherence-enhanced cooling. Finally, we show that signi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.05218","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":"2026-05-18T00:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hIj7R22gEru3DDFfDy+5WsUImUDTsf4JX9NSfYvBqvGRE5eTeZSJWbDg/5NmRZvC5pynjK81UNml2161cgTADg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:23:14.615523Z"},"content_sha256":"2a4e6805a7e5bbbcecd63ee443b79595882e907fd6d84df9c02ffb64a57a4438","schema_version":"1.0","event_id":"sha256:2a4e6805a7e5bbbcecd63ee443b79595882e907fd6d84df9c02ffb64a57a4438"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TCGOADC3HQENEMLO4EKJW6I3L3/bundle.json","state_url":"https://pith.science/pith/TCGOADC3HQENEMLO4EKJW6I3L3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TCGOADC3HQENEMLO4EKJW6I3L3/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":"2026-05-31T12:23:14Z","links":{"resolver":"https://pith.science/pith/TCGOADC3HQENEMLO4EKJW6I3L3","bundle":"https://pith.science/pith/TCGOADC3HQENEMLO4EKJW6I3L3/bundle.json","state":"https://pith.science/pith/TCGOADC3HQENEMLO4EKJW6I3L3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TCGOADC3HQENEMLO4EKJW6I3L3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:TCGOADC3HQENEMLO4EKJW6I3L3","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":"a1f975510a5f9470b7d602ccc72a7fc469e972c8fe1aacdee759db87da368399","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-18T17:54:12Z","title_canon_sha256":"593bfa1504ecac394683aadf5bd195fdfc27892ab34862a7089cd803756105d1"},"schema_version":"1.0","source":{"id":"1607.05218","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.05218","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"1607.05218v2","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.05218","created_at":"2026-05-18T00:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"TCGOADC3HQEN","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"TCGOADC3HQENEMLO","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"TCGOADC3","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:2a4e6805a7e5bbbcecd63ee443b79595882e907fd6d84df9c02ffb64a57a4438","target":"graph","created_at":"2026-05-18T00:54:47Z","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":"An implementation of a small quantum absorption refrigerator in a circuit QED architecture is proposed. The setup consists of three harmonic oscillators coupled to a Josephson unction. The refrigerator is autonomous in the sense that it does not require any external control for cooling, but only thermal contact between the oscillators and heat baths at different temperatures. In addition, the setup features a built-in switch, which allows the cooling to be turned on and off. If timing control is available, this enables the possibility for coherence-enhanced cooling. Finally, we show that signi","authors_text":"Jonatan Bohr Brask, Marcus Huber, Mart\\'i Perarnau-Llobet, Nicolas Brunner, Patrick P. Hofer, Ralph Silva","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-18T17:54:12Z","title":"Autonomous Quantum Refrigerator in a Circuit-QED Architecture Based on a Josephson Junction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.05218","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":"sha256:7586ae3be9e87b812f484ba3ee625c62c5001f219092591b3d9c1b6eb065567d","target":"record","created_at":"2026-05-18T00:54:47Z","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":"a1f975510a5f9470b7d602ccc72a7fc469e972c8fe1aacdee759db87da368399","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-18T17:54:12Z","title_canon_sha256":"593bfa1504ecac394683aadf5bd195fdfc27892ab34862a7089cd803756105d1"},"schema_version":"1.0","source":{"id":"1607.05218","kind":"arxiv","version":2}},"canonical_sha256":"988ce00c5b3c08d2316ee1149b791b5eedcdfca9b7bf3c3c390f680bc2b08d37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"988ce00c5b3c08d2316ee1149b791b5eedcdfca9b7bf3c3c390f680bc2b08d37","first_computed_at":"2026-05-18T00:54:47.551417Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:47.551417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V5a0edskVcKFOn4pFOzkf2iYcfaES1ABXymszg3AgTktp9fy2cqkbfNvdb7qd1UALVLOsEUNw/2UCGauPDe0Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:47.551928Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.05218","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7586ae3be9e87b812f484ba3ee625c62c5001f219092591b3d9c1b6eb065567d","sha256:2a4e6805a7e5bbbcecd63ee443b79595882e907fd6d84df9c02ffb64a57a4438"],"state_sha256":"6728d3da9d0dcf7659036687c638134e4bbefd00568538ea51155b465a365ea7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pyAPgbGBNdzdFkqe57DvgnWJLXFgK88Mk9hwyOaVX1ln6lmVTX2GSc8OwQn2MeCv0FTavyx1M1YIBIgNFwwXCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:23:14.617964Z","bundle_sha256":"423aa2fea3a75a2d404779ca972f49552375f9f08c1f8de6a7702a659fae71e7"}}