{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:PKROYOOOKN6FSZ33ZVKKZFXNBC","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":"992fdf92e70259f1957811a63cb32c5bec61c9b75327d16e7d51af1068e5266d","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-03T06:40:21Z","title_canon_sha256":"cab45c90bb8e4a5511371665e18a0423d3dee7649e983b1de35ddb79e249dc5b"},"schema_version":"1.0","source":{"id":"2202.01435","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.01435","created_at":"2026-07-05T05:28:06Z"},{"alias_kind":"arxiv_version","alias_value":"2202.01435v2","created_at":"2026-07-05T05:28:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.01435","created_at":"2026-07-05T05:28:06Z"},{"alias_kind":"pith_short_12","alias_value":"PKROYOOOKN6F","created_at":"2026-07-05T05:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"PKROYOOOKN6FSZ33","created_at":"2026-07-05T05:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"PKROYOOO","created_at":"2026-07-05T05:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:716e37124d1490731b7b7122c280f645dfc7368661de473dfafa98edc1d338c5","target":"graph","created_at":"2026-07-05T05:28:06Z","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/2202.01435/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Identifying, quantifying, and suppressing decoherence mechanisms in qubits are important steps towards the goal of engineering a quantum computer or simulator. Superconducting circuits offer flexibility in qubit design; however, their performance is adversely affected by quasiparticles (broken Cooper pairs). Developing a quasiparticle mitigation strategy compatible with scalable, high-coherence devices is therefore highly desirable. Here we experimentally demonstrate how to control quasiparticle generation by downsizing the qubit, capping it with a metallic cover, and equipping it with suitabl","authors_text":"Dapeng Yu, Fei Yan, Gianluigi Catelani, Haolan Yuan, Jian Li, Libo Zhang, Lifu Nie, Ling Hu, Song Liu, Weiwei Wei, Xianchuang Pan, Yuxuan Zhou, Zhi Hao Jiang","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-03T06:40:21Z","title":"Engineering superconducting qubits to reduce quasiparticles and charge noise"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.01435","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":"sha256:390bcb387d06f492197b10bd10c08406a51721b07c0e60d4eb6a2a3069686227","target":"record","created_at":"2026-07-05T05:28:06Z","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":"992fdf92e70259f1957811a63cb32c5bec61c9b75327d16e7d51af1068e5266d","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-02-03T06:40:21Z","title_canon_sha256":"cab45c90bb8e4a5511371665e18a0423d3dee7649e983b1de35ddb79e249dc5b"},"schema_version":"1.0","source":{"id":"2202.01435","kind":"arxiv","version":2}},"canonical_sha256":"7aa2ec39ce537c59677bcd54ac96ed089c9632af0d945996d009855741271016","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7aa2ec39ce537c59677bcd54ac96ed089c9632af0d945996d009855741271016","first_computed_at":"2026-07-05T05:28:06.057636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:28:06.057636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VJ56zSRt2SN2mt22iKJ6Ug6tJ3uhsNIYfP5ZpRyRefAXih4drO/SBUSgTHSCqLRtOEUOBJR5MWvJ/26uCWLoBg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:28:06.058003Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.01435","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:390bcb387d06f492197b10bd10c08406a51721b07c0e60d4eb6a2a3069686227","sha256:716e37124d1490731b7b7122c280f645dfc7368661de473dfafa98edc1d338c5"],"state_sha256":"661f04abebea16e241d52499f4abdd2e0a16319299360f6b55666872b0ef2098"}