{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:2M3SKSUVOEUYO6DHI26MLTM6VO","short_pith_number":"pith:2M3SKSUV","canonical_record":{"source":{"id":"2607.28702","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T13:47:32Z","cross_cats_sorted":[],"title_canon_sha256":"9b96a030147cd76eba7dbba7527dec0e5980c6952a6d5f3f6f745207ad6fbf52","abstract_canon_sha256":"41affe7f70599d32335ce86cadbbcbc369e56eb94f99fb89c8f5a5a3ee0a22dd"},"schema_version":"1.0"},"canonical_sha256":"d337254a95712987786746bcc5cd9eabb843bf2daea29f4b386de1f536137359","source":{"kind":"arxiv","id":"2607.28702","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28702","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28702v1","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28702","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_12","alias_value":"2M3SKSUVOEUY","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_16","alias_value":"2M3SKSUVOEUYO6DH","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_8","alias_value":"2M3SKSUV","created_at":"2026-08-03T00:12:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:2M3SKSUVOEUYO6DHI26MLTM6VO","target":"record","payload":{"canonical_record":{"source":{"id":"2607.28702","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T13:47:32Z","cross_cats_sorted":[],"title_canon_sha256":"9b96a030147cd76eba7dbba7527dec0e5980c6952a6d5f3f6f745207ad6fbf52","abstract_canon_sha256":"41affe7f70599d32335ce86cadbbcbc369e56eb94f99fb89c8f5a5a3ee0a22dd"},"schema_version":"1.0"},"canonical_sha256":"d337254a95712987786746bcc5cd9eabb843bf2daea29f4b386de1f536137359","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-03T00:12:13.249856Z","signature_b64":"dPEJ8Ze0eDjhpNclbTdr75tZP8LGRIKMcDiOu+fZpD70tyk2R6kO3gM59qmSw4g+vgTQd930i3G0vSGc5ZezAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d337254a95712987786746bcc5cd9eabb843bf2daea29f4b386de1f536137359","last_reissued_at":"2026-08-03T00:12:13.247472Z","signature_status":"signed_v1","first_computed_at":"2026-08-03T00:12:13.247472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.28702","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":"2026-08-03T00:12:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vu65QtQXb/6mkyHBr+2JgynYXDdJgpcGKnJjfXe5Vu/tu1fZk1gND5pUzGPLQAEL6wXjiD6PZN5rwzbAsQIDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T03:23:29.811531Z"},"content_sha256":"28fe5e3f938a3be14934d384ba177c8171766df1ab6177f0ddac01c9378aeb08","schema_version":"1.0","event_id":"sha256:28fe5e3f938a3be14934d384ba177c8171766df1ab6177f0ddac01c9378aeb08"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:2M3SKSUVOEUYO6DHI26MLTM6VO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental Demonstration of a Measurement-Feedback Quantum Information Engine","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Dehua Liu, Gang Chen, Jianhui Wang, Jinfeng Wei, Jintao Bu, Kaifeng Cui, Leilei Yan, Xi Wang, Yiling Zhan, Yingying Hong, Zhe Wang","submitted_at":"2026-07-30T13:47:32Z","abstract_excerpt":"Harnessing quantum inner friction in a finite-time stroke of quantum engine to extract work remains an open experimental challenge. Here we address this issue by experimentally establishing and demonstrating an innovative measurement-feedback quantum information engine model in the trapped 40Ca+ ion system, where the projective measurement replaces the hot reservoir as a nonthermal energy source and feedback-control conditionally steers the system through either unitary compression-expansion strokes or thermalization. We experimentally show that the engine, starting from arbitrary initial stat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28702","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/2607.28702/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":"2026-08-03T00:12:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"769e/67Nsmqh55jdrAuSRx0e83gSkc1xA1MFXYtLo1TyBvxQLqOV0WuBXyBxLR1c2KfI+O7w1oQ6thDVlfvkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T03:23:29.812044Z"},"content_sha256":"c9ffd01d1253849f1ec08ffbf6e22dbe8b1c619b4b23bfe0f98e9628a811372d","schema_version":"1.0","event_id":"sha256:c9ffd01d1253849f1ec08ffbf6e22dbe8b1c619b4b23bfe0f98e9628a811372d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/bundle.json","state_url":"https://pith.science/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/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":"2026-08-14T03:23:29Z","links":{"resolver":"https://pith.science/pith/2M3SKSUVOEUYO6DHI26MLTM6VO","bundle":"https://pith.science/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/bundle.json","state":"https://pith.science/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2M3SKSUVOEUYO6DHI26MLTM6VO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:2M3SKSUVOEUYO6DHI26MLTM6VO","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":"41affe7f70599d32335ce86cadbbcbc369e56eb94f99fb89c8f5a5a3ee0a22dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T13:47:32Z","title_canon_sha256":"9b96a030147cd76eba7dbba7527dec0e5980c6952a6d5f3f6f745207ad6fbf52"},"schema_version":"1.0","source":{"id":"2607.28702","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28702","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28702v1","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28702","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_12","alias_value":"2M3SKSUVOEUY","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_16","alias_value":"2M3SKSUVOEUYO6DH","created_at":"2026-08-03T00:12:13Z"},{"alias_kind":"pith_short_8","alias_value":"2M3SKSUV","created_at":"2026-08-03T00:12:13Z"}],"graph_snapshots":[{"event_id":"sha256:c9ffd01d1253849f1ec08ffbf6e22dbe8b1c619b4b23bfe0f98e9628a811372d","target":"graph","created_at":"2026-08-03T00:12:13Z","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/2607.28702/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Harnessing quantum inner friction in a finite-time stroke of quantum engine to extract work remains an open experimental challenge. Here we address this issue by experimentally establishing and demonstrating an innovative measurement-feedback quantum information engine model in the trapped 40Ca+ ion system, where the projective measurement replaces the hot reservoir as a nonthermal energy source and feedback-control conditionally steers the system through either unitary compression-expansion strokes or thermalization. We experimentally show that the engine, starting from arbitrary initial stat","authors_text":"Dehua Liu, Gang Chen, Jianhui Wang, Jinfeng Wei, Jintao Bu, Kaifeng Cui, Leilei Yan, Xi Wang, Yiling Zhan, Yingying Hong, Zhe Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T13:47:32Z","title":"Experimental Demonstration of a Measurement-Feedback Quantum Information Engine"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28702","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":"sha256:28fe5e3f938a3be14934d384ba177c8171766df1ab6177f0ddac01c9378aeb08","target":"record","created_at":"2026-08-03T00:12:13Z","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":"41affe7f70599d32335ce86cadbbcbc369e56eb94f99fb89c8f5a5a3ee0a22dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T13:47:32Z","title_canon_sha256":"9b96a030147cd76eba7dbba7527dec0e5980c6952a6d5f3f6f745207ad6fbf52"},"schema_version":"1.0","source":{"id":"2607.28702","kind":"arxiv","version":1}},"canonical_sha256":"d337254a95712987786746bcc5cd9eabb843bf2daea29f4b386de1f536137359","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d337254a95712987786746bcc5cd9eabb843bf2daea29f4b386de1f536137359","first_computed_at":"2026-08-03T00:12:13.247472Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-03T00:12:13.247472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dPEJ8Ze0eDjhpNclbTdr75tZP8LGRIKMcDiOu+fZpD70tyk2R6kO3gM59qmSw4g+vgTQd930i3G0vSGc5ZezAA==","signature_status":"signed_v1","signed_at":"2026-08-03T00:12:13.249856Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.28702","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28fe5e3f938a3be14934d384ba177c8171766df1ab6177f0ddac01c9378aeb08","sha256:c9ffd01d1253849f1ec08ffbf6e22dbe8b1c619b4b23bfe0f98e9628a811372d"],"state_sha256":"f8db57c03ce871116453485b6b1ed0cd12b9a31e2761b5aa2246990ef508fc32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ezwB4gcTS5cHMfC9/o2yl46mLKmQnewNUuXYaqnI3YzITh8VyJxaShTos+OIYEe1CUe9+BILLNqAeQqs8mIDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T03:23:29.816217Z","bundle_sha256":"be111a39ee4a7b84863f88fac2cd53a181d313e820b88668b39f47c21321f38d"}}