{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:DAMZZKPQOIBWZ3M333LZZPJRYE","short_pith_number":"pith:DAMZZKPQ","canonical_record":{"source":{"id":"2503.13285","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-03-17T15:37:37Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"413d02b395509c87d21f4687286c516c08b74f26bd727c719a8a0a3f3b8a1214","abstract_canon_sha256":"f03024c212d6041f9cf62a82c6380fafef357370be500149c897deadf14f2e03"},"schema_version":"1.0"},"canonical_sha256":"18199ca9f072036ced9bded79cbd31c13d579f65ac1946026474cf3f31d4e47d","source":{"kind":"arxiv","id":"2503.13285","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.13285","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"2503.13285v2","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.13285","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"DAMZZKPQOIBW","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_16","alias_value":"DAMZZKPQOIBWZ3M3","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_8","alias_value":"DAMZZKPQ","created_at":"2026-06-04T01:08:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:DAMZZKPQOIBWZ3M333LZZPJRYE","target":"record","payload":{"canonical_record":{"source":{"id":"2503.13285","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-03-17T15:37:37Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"413d02b395509c87d21f4687286c516c08b74f26bd727c719a8a0a3f3b8a1214","abstract_canon_sha256":"f03024c212d6041f9cf62a82c6380fafef357370be500149c897deadf14f2e03"},"schema_version":"1.0"},"canonical_sha256":"18199ca9f072036ced9bded79cbd31c13d579f65ac1946026474cf3f31d4e47d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:08:28.376940Z","signature_b64":"aUFHNDayBGO6x3EeP31acb2JCC6A2ZCFkyY22iDXOuXSCjiCPWt2kUYqtAFNrMNlBETuLwSQZ71+vkIDSsgTBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18199ca9f072036ced9bded79cbd31c13d579f65ac1946026474cf3f31d4e47d","last_reissued_at":"2026-06-04T01:08:28.376425Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:08:28.376425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.13285","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-04T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8V8KcW2YWuGU6gU1yfplKPF6ZcFSqILlzzQhT97ONX/cjSW37LHfMIy6OEo3h5OpfeDMcgGhCU0SR2/CxV3QDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:44:04.118475Z"},"content_sha256":"fcecd375ee85b0af63f8e0e72ec3ebd5ed5be40a5d8dd0c5703f00bb66ade82b","schema_version":"1.0","event_id":"sha256:fcecd375ee85b0af63f8e0e72ec3ebd5ed5be40a5d8dd0c5703f00bb66ade82b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:DAMZZKPQOIBWZ3M333LZZPJRYE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-loss Nb on Si superconducting resonators from a dual-use spintronics deposition chamber and with acid-free post-processing","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Aleksandra B. Biedron, B. L. T. Plourde, Christopher J. K. Richardson, Corey Rae H. McRae, Daniel C. Ralph, Gregory D. Fuchs, Haoran Lu, Ivan V. Pechenezhskiy, Jadrien T. Paustian, Jorge L. Ramirez, Kiichi Okubo, Maciej W. Olszewski, Nhi Nguyen, Rohit Pant, Tathagata Banerjee, Valla Fatemi","submitted_at":"2025-03-17T15:37:37Z","abstract_excerpt":"Magnetic impurities are known to degrade superconductivity. For this reason, physical vapor deposition chambers that have previously been used for magnetic materials have generally been avoided for making high-quality superconducting resonator devices. In this article, we show by example that such chambers can be used for this purpose; with Nb films sputtered in a chamber that continues to be used for magnetic materials, we demonstrate compact (\\SI{3}{\\micro\\meter} gap) coplanar waveguide resonators with low-power internal quality factors near one million. We achieve this using a resist strip "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.13285","kind":"arxiv","version":2},"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/2503.13285/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-04T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ytDOQ0VnbqK1urXilox15DRO5dS/MPoj0mTaOba8HDHXcSumVEEb8CBL2VEJWCxRixEfZsOyT87W7KjeNt9bDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:44:04.119139Z"},"content_sha256":"fc81ce7c2d28a6783d54b14368af42f24fff8740348e38192c58f983fb602d7d","schema_version":"1.0","event_id":"sha256:fc81ce7c2d28a6783d54b14368af42f24fff8740348e38192c58f983fb602d7d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/bundle.json","state_url":"https://pith.science/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-05T16:44:04Z","links":{"resolver":"https://pith.science/pith/DAMZZKPQOIBWZ3M333LZZPJRYE","bundle":"https://pith.science/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/bundle.json","state":"https://pith.science/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DAMZZKPQOIBWZ3M333LZZPJRYE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:DAMZZKPQOIBWZ3M333LZZPJRYE","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":"f03024c212d6041f9cf62a82c6380fafef357370be500149c897deadf14f2e03","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-03-17T15:37:37Z","title_canon_sha256":"413d02b395509c87d21f4687286c516c08b74f26bd727c719a8a0a3f3b8a1214"},"schema_version":"1.0","source":{"id":"2503.13285","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.13285","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"2503.13285v2","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.13285","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"DAMZZKPQOIBW","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_16","alias_value":"DAMZZKPQOIBWZ3M3","created_at":"2026-06-04T01:08:28Z"},{"alias_kind":"pith_short_8","alias_value":"DAMZZKPQ","created_at":"2026-06-04T01:08:28Z"}],"graph_snapshots":[{"event_id":"sha256:fc81ce7c2d28a6783d54b14368af42f24fff8740348e38192c58f983fb602d7d","target":"graph","created_at":"2026-06-04T01:08:28Z","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/2503.13285/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic impurities are known to degrade superconductivity. For this reason, physical vapor deposition chambers that have previously been used for magnetic materials have generally been avoided for making high-quality superconducting resonator devices. In this article, we show by example that such chambers can be used for this purpose; with Nb films sputtered in a chamber that continues to be used for magnetic materials, we demonstrate compact (\\SI{3}{\\micro\\meter} gap) coplanar waveguide resonators with low-power internal quality factors near one million. We achieve this using a resist strip ","authors_text":"Aleksandra B. Biedron, B. L. T. Plourde, Christopher J. K. Richardson, Corey Rae H. McRae, Daniel C. Ralph, Gregory D. Fuchs, Haoran Lu, Ivan V. Pechenezhskiy, Jadrien T. Paustian, Jorge L. Ramirez, Kiichi Okubo, Maciej W. Olszewski, Nhi Nguyen, Rohit Pant, Tathagata Banerjee, Valla Fatemi","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-03-17T15:37:37Z","title":"Low-loss Nb on Si superconducting resonators from a dual-use spintronics deposition chamber and with acid-free post-processing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.13285","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:fcecd375ee85b0af63f8e0e72ec3ebd5ed5be40a5d8dd0c5703f00bb66ade82b","target":"record","created_at":"2026-06-04T01:08:28Z","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":"f03024c212d6041f9cf62a82c6380fafef357370be500149c897deadf14f2e03","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-03-17T15:37:37Z","title_canon_sha256":"413d02b395509c87d21f4687286c516c08b74f26bd727c719a8a0a3f3b8a1214"},"schema_version":"1.0","source":{"id":"2503.13285","kind":"arxiv","version":2}},"canonical_sha256":"18199ca9f072036ced9bded79cbd31c13d579f65ac1946026474cf3f31d4e47d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18199ca9f072036ced9bded79cbd31c13d579f65ac1946026474cf3f31d4e47d","first_computed_at":"2026-06-04T01:08:28.376425Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T01:08:28.376425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aUFHNDayBGO6x3EeP31acb2JCC6A2ZCFkyY22iDXOuXSCjiCPWt2kUYqtAFNrMNlBETuLwSQZ71+vkIDSsgTBw==","signature_status":"signed_v1","signed_at":"2026-06-04T01:08:28.376940Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.13285","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fcecd375ee85b0af63f8e0e72ec3ebd5ed5be40a5d8dd0c5703f00bb66ade82b","sha256:fc81ce7c2d28a6783d54b14368af42f24fff8740348e38192c58f983fb602d7d"],"state_sha256":"069201224da0206b9341212f60a99cefd6b962f32ab9a8251ce59f42e2e881ba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3NeSDEbZhlDcF4eGWhtUh5OokwSbZWbSBNg97qA/A3yFOjk0Yi64axaoZ0/Es7ASRAZpLHTRXHOk5KtKuFj/CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T16:44:04.122114Z","bundle_sha256":"f824f26f45b9615949affd6fa90fb0ed486daa7f6f20e96ba7d5091c7788db16"}}