{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BJX2ITHV2VA4OUFIN3H7XR5PBJ","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":"05107c011a29145ea10568d08783698d2b7c21aadfa49ce3990037b47d12053a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-08-05T17:03:16Z","title_canon_sha256":"044642ef8e8f53c3ce84402fc40785ecdaf5786d8946f10a720cb8428bc2f357"},"schema_version":"1.0","source":{"id":"1308.1043","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.1043","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"1308.1043v2","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.1043","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"BJX2ITHV2VA4","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"BJX2ITHV2VA4OUFI","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"BJX2ITHV","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:a12159a8a82ab6921fb75111565a81843c5daee554f0cedc7d4e5d2fd8bfe120","target":"graph","created_at":"2026-05-18T03:13:45Z","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"},"paper":{"abstract_excerpt":"We have investigated the decoherence of quantum states in two Al/AlOx/Al Cooper-pair boxes coupled to lumped element superconducting LC resonators. At 25 mK, the first qubit had an energy relaxation time T1 that varied from 30 us to 200 us between 4 and 8 GHz and displayed an inverse correlation between T1 and the coupling to the microwave drive line. The Ramsey fringe decay times T2* were in the 200-500 ns range while the spin echo envelope decay times Techo varied from 2.4-3.3 us, consistent with 1/f charge noise with a high frequency cutoff of 0.2 MHz. A second Cooper-pair box qubit with si","authors_text":"B. S. Palmer, B. Suri, F. C. Wellstood, S. Novikov, V. Zaretskey, Z. Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-08-05T17:03:16Z","title":"Decoherence in a Pair of Long-Lived Cooper-Pair Boxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.1043","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":"sha256:99bb706d1342341effae61a2d077552c690d42384bf61a00c2aa880249284da6","target":"record","created_at":"2026-05-18T03:13:45Z","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":"05107c011a29145ea10568d08783698d2b7c21aadfa49ce3990037b47d12053a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-08-05T17:03:16Z","title_canon_sha256":"044642ef8e8f53c3ce84402fc40785ecdaf5786d8946f10a720cb8428bc2f357"},"schema_version":"1.0","source":{"id":"1308.1043","kind":"arxiv","version":2}},"canonical_sha256":"0a6fa44cf5d541c750a86ecffbc7af0a6327bf8820683edf1ca91e027adcecc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a6fa44cf5d541c750a86ecffbc7af0a6327bf8820683edf1ca91e027adcecc0","first_computed_at":"2026-05-18T03:13:45.318261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:45.318261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D7R9GLxpqKToFvai/IUzaZc/8C9nMyy0WCvGqvR2zDnzhj1aNoqKe3H9eOHihZe0OZpsk01ZIa7ycMnTGUN+Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:45.318824Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.1043","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99bb706d1342341effae61a2d077552c690d42384bf61a00c2aa880249284da6","sha256:a12159a8a82ab6921fb75111565a81843c5daee554f0cedc7d4e5d2fd8bfe120"],"state_sha256":"474012ac6400c8614e3997ebcdbcb455801a2c034230981bbb10c88ab73d9701"}