{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:T3E4FRTFH364H2H3ORHAGCHFW2","short_pith_number":"pith:T3E4FRTF","schema_version":"1.0","canonical_sha256":"9ec9c2c6653efdc3e8fb744e0308e5b6a909d41422904ba8c2665a378ffc9a97","source":{"kind":"arxiv","id":"2509.04776","version":1},"attestation_state":"computed","paper":{"title":"Transmon-assisted high-fidelity controlled-Z gates for integer fluxonium qubits","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"H. Xiong, H.-Y. Zhang, J.-H. Wang, J.-Z. Yang, L.-M. Duan, Y.-P. Song","submitted_at":"2025-09-05T03:12:54Z","abstract_excerpt":"Fluxoniums, as partially-protected superconducting qubits are promising to be employed to build high-performance large-scale quantum processor. The recently proposed ``integer fluxonium\" operates at zero external flux bias, with a frequency of approximately 3 GHz. Single-qubit gate fidelity has been demonstrated to exceed $99.9\\%$, while two-qubit gate schemes and scalable architectures remain underexplored. In this work, we investigate a fluxonium-transmon-fluxonium (FTF) coupling architecture using integer fluxoniums. We first confirm suppression of $ZZ$ interaction in the FTF system and the"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2509.04776","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2025-09-05T03:12:54Z","cross_cats_sorted":[],"title_canon_sha256":"1eae52221c93fed56eebee7bb21438914777337ca66ff0d5fa35b87f1513aa36","abstract_canon_sha256":"7a568a918a327d48b1e6caedff9c9b5e754b83db1fb03b311543195cb47aa1a5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:06:20.661629Z","signature_b64":"5DM7k2iOikG+RTCZIqPUQQQr75vMcIO1TB+oJqDz0Q1mJtRH7LsSP44BBSrLffed8YtRDQmcs/PyQ0WneSWQBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ec9c2c6653efdc3e8fb744e0308e5b6a909d41422904ba8c2665a378ffc9a97","last_reissued_at":"2026-07-05T12:06:20.661117Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:06:20.661117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Transmon-assisted high-fidelity controlled-Z gates for integer fluxonium qubits","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"H. Xiong, H.-Y. Zhang, J.-H. Wang, J.-Z. Yang, L.-M. Duan, Y.-P. Song","submitted_at":"2025-09-05T03:12:54Z","abstract_excerpt":"Fluxoniums, as partially-protected superconducting qubits are promising to be employed to build high-performance large-scale quantum processor. The recently proposed ``integer fluxonium\" operates at zero external flux bias, with a frequency of approximately 3 GHz. Single-qubit gate fidelity has been demonstrated to exceed $99.9\\%$, while two-qubit gate schemes and scalable architectures remain underexplored. In this work, we investigate a fluxonium-transmon-fluxonium (FTF) coupling architecture using integer fluxoniums. We first confirm suppression of $ZZ$ interaction in the FTF system and the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04776","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/2509.04776/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2509.04776","created_at":"2026-07-05T12:06:20.661172+00:00"},{"alias_kind":"arxiv_version","alias_value":"2509.04776v1","created_at":"2026-07-05T12:06:20.661172+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04776","created_at":"2026-07-05T12:06:20.661172+00:00"},{"alias_kind":"pith_short_12","alias_value":"T3E4FRTFH364","created_at":"2026-07-05T12:06:20.661172+00:00"},{"alias_kind":"pith_short_16","alias_value":"T3E4FRTFH364H2H3","created_at":"2026-07-05T12:06:20.661172+00:00"},{"alias_kind":"pith_short_8","alias_value":"T3E4FRTF","created_at":"2026-07-05T12:06:20.661172+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2","json":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2.json","graph_json":"https://pith.science/api/pith-number/T3E4FRTFH364H2H3ORHAGCHFW2/graph.json","events_json":"https://pith.science/api/pith-number/T3E4FRTFH364H2H3ORHAGCHFW2/events.json","paper":"https://pith.science/paper/T3E4FRTF"},"agent_actions":{"view_html":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2","download_json":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2.json","view_paper":"https://pith.science/paper/T3E4FRTF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2509.04776&json=true","fetch_graph":"https://pith.science/api/pith-number/T3E4FRTFH364H2H3ORHAGCHFW2/graph.json","fetch_events":"https://pith.science/api/pith-number/T3E4FRTFH364H2H3ORHAGCHFW2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2/action/storage_attestation","attest_author":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2/action/author_attestation","sign_citation":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2/action/citation_signature","submit_replication":"https://pith.science/pith/T3E4FRTFH364H2H3ORHAGCHFW2/action/replication_record"}},"created_at":"2026-07-05T12:06:20.661172+00:00","updated_at":"2026-07-05T12:06:20.661172+00:00"}