{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:NW6L2JJQUV6I6CZYLVLXUAD5P2","short_pith_number":"pith:NW6L2JJQ","canonical_record":{"source":{"id":"2404.15835","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2024-04-24T12:14:53Z","cross_cats_sorted":[],"title_canon_sha256":"0339c116d37ea5a39dff22f78cc7099320ed0da3177716f9331eb88d11fed415","abstract_canon_sha256":"fe09555fbda4c3fa9ebf47a18a5291ecdf97ad9ce84f06805358ad027e6038b9"},"schema_version":"1.0"},"canonical_sha256":"6dbcbd2530a57c8f0b385d577a007d7e94744bb9de621b06e36820d438df8614","source":{"kind":"arxiv","id":"2404.15835","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.15835","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"2404.15835v1","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.15835","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"NW6L2JJQUV6I","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_16","alias_value":"NW6L2JJQUV6I6CZY","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_8","alias_value":"NW6L2JJQ","created_at":"2026-07-05T08:11:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:NW6L2JJQUV6I6CZYLVLXUAD5P2","target":"record","payload":{"canonical_record":{"source":{"id":"2404.15835","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2024-04-24T12:14:53Z","cross_cats_sorted":[],"title_canon_sha256":"0339c116d37ea5a39dff22f78cc7099320ed0da3177716f9331eb88d11fed415","abstract_canon_sha256":"fe09555fbda4c3fa9ebf47a18a5291ecdf97ad9ce84f06805358ad027e6038b9"},"schema_version":"1.0"},"canonical_sha256":"6dbcbd2530a57c8f0b385d577a007d7e94744bb9de621b06e36820d438df8614","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:11:46.226190Z","signature_b64":"RiuOinOTioBpiyOUVpUgHt0C2CNAM5nLIroXEdzAEjfp9yJy/Gz92VuGdFb/L/fHnlDe1u/nRT8nVQ6rzxRxCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6dbcbd2530a57c8f0b385d577a007d7e94744bb9de621b06e36820d438df8614","last_reissued_at":"2026-07-05T08:11:46.225733Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:11:46.225733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.15835","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":"2026-07-05T08:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tQ+9c0NrEg3G+lOzPE0W3TfmRr3P9OKgiBn5UG5GMuAewxw6KDgPZCEIYkISPZTlD3jzIRSp+GlsX01wCFb1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T15:55:40.460772Z"},"content_sha256":"fb8cb0cdd7cb7c74e62e0e80bbbb7dc503938ea0070108b4a22cd2e5f9ad1de6","schema_version":"1.0","event_id":"sha256:fb8cb0cdd7cb7c74e62e0e80bbbb7dc503938ea0070108b4a22cd2e5f9ad1de6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:NW6L2JJQUV6I6CZYLVLXUAD5P2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Energy-conversion device using a quantum engine with the work medium of two-atom entanglement","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. Wang, F. Zhou, G.-Y. Ding, J.-C. Li, J.-T. Bu, J.-W. Zhang, L. Chen, M. Feng, W.-F. Yuan, W.-Q. Ding","submitted_at":"2024-04-24T12:14:53Z","abstract_excerpt":"Although entanglement is considered as an essential resource for quantum information processing, whether entanglement helps for energy conversion or output in the quantum regime is still lack of experimental witness. Here we report on an energy-conversion device operating as a quantum engine with the working medium acted by two entangled ions confined in a harmonic potential. The two ions are entangled by virtually coupling to one of the vibrational modes shared by the two ions, and the quantum engine couples to a quantum load, which is another shared vibrational mode. We explore the energy co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.15835","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.15835/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":"2026-07-05T08:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w0noWYnAnhqKp30zcH+j85AeXsNgOyPhcZjluYisr4p/a2NH+10Tld9jiVvELdELvS5FwLEQNRRvnRPgmnQ+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T15:55:40.461310Z"},"content_sha256":"914a3cb018dd5b4e21aa3046969eee42d60153d8899aa98646643f373d714749","schema_version":"1.0","event_id":"sha256:914a3cb018dd5b4e21aa3046969eee42d60153d8899aa98646643f373d714749"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/bundle.json","state_url":"https://pith.science/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/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":"2026-08-22T15:55:40Z","links":{"resolver":"https://pith.science/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2","bundle":"https://pith.science/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/bundle.json","state":"https://pith.science/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NW6L2JJQUV6I6CZYLVLXUAD5P2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NW6L2JJQUV6I6CZYLVLXUAD5P2","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":"fe09555fbda4c3fa9ebf47a18a5291ecdf97ad9ce84f06805358ad027e6038b9","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2024-04-24T12:14:53Z","title_canon_sha256":"0339c116d37ea5a39dff22f78cc7099320ed0da3177716f9331eb88d11fed415"},"schema_version":"1.0","source":{"id":"2404.15835","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.15835","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"2404.15835v1","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.15835","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"NW6L2JJQUV6I","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_16","alias_value":"NW6L2JJQUV6I6CZY","created_at":"2026-07-05T08:11:46Z"},{"alias_kind":"pith_short_8","alias_value":"NW6L2JJQ","created_at":"2026-07-05T08:11:46Z"}],"graph_snapshots":[{"event_id":"sha256:914a3cb018dd5b4e21aa3046969eee42d60153d8899aa98646643f373d714749","target":"graph","created_at":"2026-07-05T08:11:46Z","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/2404.15835/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Although entanglement is considered as an essential resource for quantum information processing, whether entanglement helps for energy conversion or output in the quantum regime is still lack of experimental witness. Here we report on an energy-conversion device operating as a quantum engine with the working medium acted by two entangled ions confined in a harmonic potential. The two ions are entangled by virtually coupling to one of the vibrational modes shared by the two ions, and the quantum engine couples to a quantum load, which is another shared vibrational mode. We explore the energy co","authors_text":"B. Wang, F. Zhou, G.-Y. Ding, J.-C. Li, J.-T. Bu, J.-W. Zhang, L. Chen, M. Feng, W.-F. Yuan, W.-Q. Ding","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2024-04-24T12:14:53Z","title":"Energy-conversion device using a quantum engine with the work medium of two-atom entanglement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.15835","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:fb8cb0cdd7cb7c74e62e0e80bbbb7dc503938ea0070108b4a22cd2e5f9ad1de6","target":"record","created_at":"2026-07-05T08:11:46Z","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":"fe09555fbda4c3fa9ebf47a18a5291ecdf97ad9ce84f06805358ad027e6038b9","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2024-04-24T12:14:53Z","title_canon_sha256":"0339c116d37ea5a39dff22f78cc7099320ed0da3177716f9331eb88d11fed415"},"schema_version":"1.0","source":{"id":"2404.15835","kind":"arxiv","version":1}},"canonical_sha256":"6dbcbd2530a57c8f0b385d577a007d7e94744bb9de621b06e36820d438df8614","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dbcbd2530a57c8f0b385d577a007d7e94744bb9de621b06e36820d438df8614","first_computed_at":"2026-07-05T08:11:46.225733Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:11:46.225733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RiuOinOTioBpiyOUVpUgHt0C2CNAM5nLIroXEdzAEjfp9yJy/Gz92VuGdFb/L/fHnlDe1u/nRT8nVQ6rzxRxCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:11:46.226190Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.15835","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb8cb0cdd7cb7c74e62e0e80bbbb7dc503938ea0070108b4a22cd2e5f9ad1de6","sha256:914a3cb018dd5b4e21aa3046969eee42d60153d8899aa98646643f373d714749"],"state_sha256":"2b9bcba722ac291baaedf4ea3ff16f79c48b7704e26a66b01c01b954763c24ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jJnPc45ZtUj3GUFoHXmHEhHzYNOcLzqBmd2qBhQyuxqXFx2VHBvnUJg2n+ckyUm6hK7x/mR2zYIG6A9VGmQADA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T15:55:40.468809Z","bundle_sha256":"17fe3e42bbeab895a7146ed21e9272dbf32f1b177d22d65a43b27ba305ac5b92"}}