{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4AZPMNY3QFOTQFQJX3PQXN5W7Q","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":"dd4c2d26d86f6d22be3de8d1bd586cba6061bea16ce354b1ccb5a2856f5c8a15","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T16:23:50Z","title_canon_sha256":"798f3adcef963707fbe0870e2c93cc43f4d3579e1712d00b6c5a55448204fe08"},"schema_version":"1.0","source":{"id":"2607.27094","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27094","created_at":"2026-07-30T01:23:33Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27094v1","created_at":"2026-07-30T01:23:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27094","created_at":"2026-07-30T01:23:33Z"},{"alias_kind":"pith_short_12","alias_value":"4AZPMNY3QFOT","created_at":"2026-07-30T01:23:33Z"},{"alias_kind":"pith_short_16","alias_value":"4AZPMNY3QFOTQFQJ","created_at":"2026-07-30T01:23:33Z"},{"alias_kind":"pith_short_8","alias_value":"4AZPMNY3","created_at":"2026-07-30T01:23:33Z"}],"graph_snapshots":[{"event_id":"sha256:e264a6ebd9942ec4eeaa7b6bee3b45cd15371520f00de924275502af4ba14657","target":"graph","created_at":"2026-07-30T01:23:33Z","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/2607.27094/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Native multi-qubit gates could reduce the overhead associated with decompositions into single- and two-qubit operations, but whether they can simultaneously provide high fidelity, simple control and robustness against parasitic interactions in scalable architectures remains unclear. Here we experimentally realize a 65-ns native controlled-controlled-phase operation, locally equivalent to the Toffoli gate, with a fidelity of 99.39(5)% in a three-qubit processor unit based on fluxonium qubits coupled via a microwave-driven transmon coupler. The implemented operation would require CZ fidelities o","authors_text":"Alena S. Kazmina, Alexander M. Mumlyakov, Arina V. Zotova, Artyom M. Polyanskiy, Elizaveta A. Krivko, Grigoriy S. Mazhorin, Igor V. Trofimov, Ilya A. Simakov, Maxim V. Chichkov, Mikhail A. Tarkhov, Nikita Yu. Rudenko, Nikolai G. Berezkin, Nikolay N. Abramov, Tatyana A. Chudakova, Vladimir I. Chichkov","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T16:23:50Z","title":"Native CCZ Gate with Fluxonium Qubits and a Microwave-Driven Coupler"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27094","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":"sha256:9607748f191146e0d94624b37afa9204157dcf878dcae8606e85f8169a43d266","target":"record","created_at":"2026-07-30T01:23:33Z","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":"dd4c2d26d86f6d22be3de8d1bd586cba6061bea16ce354b1ccb5a2856f5c8a15","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-07-29T16:23:50Z","title_canon_sha256":"798f3adcef963707fbe0870e2c93cc43f4d3579e1712d00b6c5a55448204fe08"},"schema_version":"1.0","source":{"id":"2607.27094","kind":"arxiv","version":1}},"canonical_sha256":"e032f6371b815d381609bedf0bb7b6fc1a126770a9822e49cb99682489be8d75","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e032f6371b815d381609bedf0bb7b6fc1a126770a9822e49cb99682489be8d75","first_computed_at":"2026-07-30T01:23:33.887106Z","kind":"pith_receipt","last_reissued_at":"2026-07-30T01:23:33.887106Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.27094","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9607748f191146e0d94624b37afa9204157dcf878dcae8606e85f8169a43d266","sha256:e264a6ebd9942ec4eeaa7b6bee3b45cd15371520f00de924275502af4ba14657"],"state_sha256":"b05be46eca77d0345efdc6d530a811b6b0ca92b7f3a82ee33af07a5c93345802"}