{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:364EDXFTGUBAR4EWKSRQFP537S","short_pith_number":"pith:364EDXFT","schema_version":"1.0","canonical_sha256":"dfb841dcb3350208f09654a302bfbbfc8be059bc27d5cb7ca6ff41aef1660d0b","source":{"kind":"arxiv","id":"2204.06041","version":1},"attestation_state":"computed","paper":{"title":"Multi-modal electron microscopy study on decoherence sources and their stability in Nb based superconducting qubit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Grassellino, A. Romanenko, Cameron J. Kopas, Hilal Cansizoglu, James A. Sauls, Jayss Marshall, Jin-Su Oh, Joshua Y. Mutus, Lin Zhou, Mark Field, Matthew Reagor, Matt Kramer, Matt Lynn, Mehdi Zarea, S. Posen, Tae-Hoon Kim, Xiaotian Fang","submitted_at":"2022-04-12T18:55:26Z","abstract_excerpt":"Niobium is commonly used for superconducting quantum systems as readout resonators, capacitors, and interconnects. The coherence time of the superconducting qubits is mainly limited by microwave dissipation attributed to two-level system defects at interfaces, such as the Nb/Si and Nb/air interface. One way to improve the Nb/air interface quality is by thermal annealing, as shown by extensive studies in 3D superconducting radio frequency (SRF) cavities. However, it is unclear how the microstructure and chemistry of the interface structures change during heat treatment. To address this knowledg"},"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":"2204.06041","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-04-12T18:55:26Z","cross_cats_sorted":[],"title_canon_sha256":"1591294f611559ea5cb2e191d3b151698148cc8524bbb96d0cb41a9b2d325247","abstract_canon_sha256":"61f4a3c8049c26b3d297aff4fbfbb7eab24d9c3c3777fdd272c38b71391fe8ab"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:14:29.218921Z","signature_b64":"5GfBhGtKENYC1BIrdD5HBZOOBzS8NcVUW14dRkTEn9nhcrKShV1Kv1wVcjAg9GBvydtcmhz1pKySp2Kyk2WZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfb841dcb3350208f09654a302bfbbfc8be059bc27d5cb7ca6ff41aef1660d0b","last_reissued_at":"2026-07-05T04:14:29.218417Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:14:29.218417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multi-modal electron microscopy study on decoherence sources and their stability in Nb based superconducting qubit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Grassellino, A. Romanenko, Cameron J. Kopas, Hilal Cansizoglu, James A. Sauls, Jayss Marshall, Jin-Su Oh, Joshua Y. Mutus, Lin Zhou, Mark Field, Matthew Reagor, Matt Kramer, Matt Lynn, Mehdi Zarea, S. Posen, Tae-Hoon Kim, Xiaotian Fang","submitted_at":"2022-04-12T18:55:26Z","abstract_excerpt":"Niobium is commonly used for superconducting quantum systems as readout resonators, capacitors, and interconnects. The coherence time of the superconducting qubits is mainly limited by microwave dissipation attributed to two-level system defects at interfaces, such as the Nb/Si and Nb/air interface. One way to improve the Nb/air interface quality is by thermal annealing, as shown by extensive studies in 3D superconducting radio frequency (SRF) cavities. However, it is unclear how the microstructure and chemistry of the interface structures change during heat treatment. To address this knowledg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.06041","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/2204.06041/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":"2204.06041","created_at":"2026-07-05T04:14:29.218483+00:00"},{"alias_kind":"arxiv_version","alias_value":"2204.06041v1","created_at":"2026-07-05T04:14:29.218483+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.06041","created_at":"2026-07-05T04:14:29.218483+00:00"},{"alias_kind":"pith_short_12","alias_value":"364EDXFTGUBA","created_at":"2026-07-05T04:14:29.218483+00:00"},{"alias_kind":"pith_short_16","alias_value":"364EDXFTGUBAR4EW","created_at":"2026-07-05T04:14:29.218483+00:00"},{"alias_kind":"pith_short_8","alias_value":"364EDXFT","created_at":"2026-07-05T04:14:29.218483+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/364EDXFTGUBAR4EWKSRQFP537S","json":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S.json","graph_json":"https://pith.science/api/pith-number/364EDXFTGUBAR4EWKSRQFP537S/graph.json","events_json":"https://pith.science/api/pith-number/364EDXFTGUBAR4EWKSRQFP537S/events.json","paper":"https://pith.science/paper/364EDXFT"},"agent_actions":{"view_html":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S","download_json":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S.json","view_paper":"https://pith.science/paper/364EDXFT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2204.06041&json=true","fetch_graph":"https://pith.science/api/pith-number/364EDXFTGUBAR4EWKSRQFP537S/graph.json","fetch_events":"https://pith.science/api/pith-number/364EDXFTGUBAR4EWKSRQFP537S/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S/action/timestamp_anchor","attest_storage":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S/action/storage_attestation","attest_author":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S/action/author_attestation","sign_citation":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S/action/citation_signature","submit_replication":"https://pith.science/pith/364EDXFTGUBAR4EWKSRQFP537S/action/replication_record"}},"created_at":"2026-07-05T04:14:29.218483+00:00","updated_at":"2026-07-05T04:14:29.218483+00:00"}