{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:26QL547EQGVQ52A6SMBT6SOB7X","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":"832ac6e79fd894d49a38720c923a25db02d7b21efdcd44b3171982a9b8a9f90d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T08:56:03Z","title_canon_sha256":"aba44dd42be1839284850900d1f0b629364f93bcb96c8f6d72d263ef46b9901a"},"schema_version":"1.0","source":{"id":"2605.23385","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23385","created_at":"2026-05-25T02:01:51Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23385v1","created_at":"2026-05-25T02:01:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23385","created_at":"2026-05-25T02:01:51Z"},{"alias_kind":"pith_short_12","alias_value":"26QL547EQGVQ","created_at":"2026-05-25T02:01:51Z"},{"alias_kind":"pith_short_16","alias_value":"26QL547EQGVQ52A6","created_at":"2026-05-25T02:01:51Z"},{"alias_kind":"pith_short_8","alias_value":"26QL547E","created_at":"2026-05-25T02:01:51Z"}],"graph_snapshots":[{"event_id":"sha256:eab54fe9c748691316cb6a9bbcb8ce338133bb4a43b203e8c416ef9f5501c6c3","target":"graph","created_at":"2026-05-25T02:01:51Z","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/2605.23385/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Microscopic two-level systems (TLS) -- ubiquitous atomic-scale defects in solid-state quantum devices -- are a dominant source of qubit decoherence, yet their role is often considered local and short-memoried. Here, we report the observation of a coherent TLS that couples simultaneously to two spatially distant superconducting qubits. The TLS is identified to reside within the tunable coupler linking the qubits, enabling controllability of the TLS-qubit coupling strength via coupler frequency -- a capability absent in earlier studies. This tunability allows us to systematically probe how TLS d","authors_text":"Fei Yan, Feiyu Li, Haifeng Yu, He Wang, Huikai Xu, Jiayu Ding, Pan Shi, Ruixia Wang, Weijie Sun, Yang Gao, Yang Liu, Yaqing Feng, Yirong Jin, Yujia Zhang, Zhen Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T08:56:03Z","title":"Non-Local and Non-Markovian Effects of a Microscopic Two-Level Defect in Superconducting Quantum Circuits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23385","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:b64a6e20cb98b66412ec2860ff11e646871de3e2862b8f36a4c4fa40565baa69","target":"record","created_at":"2026-05-25T02:01:51Z","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":"832ac6e79fd894d49a38720c923a25db02d7b21efdcd44b3171982a9b8a9f90d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-22T08:56:03Z","title_canon_sha256":"aba44dd42be1839284850900d1f0b629364f93bcb96c8f6d72d263ef46b9901a"},"schema_version":"1.0","source":{"id":"2605.23385","kind":"arxiv","version":1}},"canonical_sha256":"d7a0bef3e481ab0ee81e93033f49c1fde6bccf8e368e3400de1913f9bba57100","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7a0bef3e481ab0ee81e93033f49c1fde6bccf8e368e3400de1913f9bba57100","first_computed_at":"2026-05-25T02:01:51.900826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:01:51.900826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c1FSUwE3rcW27rcB0HlLACVmkv4nEKrEc0bZ09q3+jZJjSc/KfFbj9zcL1iXho7xpmdxRV2u/SJ5tk9UVKWgAA==","signature_status":"signed_v1","signed_at":"2026-05-25T02:01:51.901388Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23385","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b64a6e20cb98b66412ec2860ff11e646871de3e2862b8f36a4c4fa40565baa69","sha256:eab54fe9c748691316cb6a9bbcb8ce338133bb4a43b203e8c416ef9f5501c6c3"],"state_sha256":"9545543f68f7b8b5cb3b9e2f65dd2542adac942dd6c92b9404702112a5b12ad2"}