{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:UOJVERN4IQOGLKYCTEFD2GXD2Z","short_pith_number":"pith:UOJVERN4","canonical_record":{"source":{"id":"2405.07388","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2024-05-12T22:26:57Z","cross_cats_sorted":[],"title_canon_sha256":"ecf2e90cbd464a1871cc6a7d1c1ca39a7cd37af2a54076f7ad664501de551860","abstract_canon_sha256":"68daaa9c24736adbfdca62cc876901f3f64b956d3ae7995980758b6eff8146ce"},"schema_version":"1.0"},"canonical_sha256":"a3935245bc441c65ab02990a3d1ae3d64d221fd2745e3e98512033c18424f393","source":{"kind":"arxiv","id":"2405.07388","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.07388","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"arxiv_version","alias_value":"2405.07388v3","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.07388","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_12","alias_value":"UOJVERN4IQOG","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_16","alias_value":"UOJVERN4IQOGLKYC","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_8","alias_value":"UOJVERN4","created_at":"2026-07-05T09:59:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:UOJVERN4IQOGLKYCTEFD2GXD2Z","target":"record","payload":{"canonical_record":{"source":{"id":"2405.07388","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2024-05-12T22:26:57Z","cross_cats_sorted":[],"title_canon_sha256":"ecf2e90cbd464a1871cc6a7d1c1ca39a7cd37af2a54076f7ad664501de551860","abstract_canon_sha256":"68daaa9c24736adbfdca62cc876901f3f64b956d3ae7995980758b6eff8146ce"},"schema_version":"1.0"},"canonical_sha256":"a3935245bc441c65ab02990a3d1ae3d64d221fd2745e3e98512033c18424f393","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:59:15.643468Z","signature_b64":"OvhaZj2U1WmJ8I7inXrQ+5aR9Kdr+wUZM1kvf7IEZxXudkCwEiEtkaRpYyyx5XEZX/pL3Q7KRKlQgYPRJ8h1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3935245bc441c65ab02990a3d1ae3d64d221fd2745e3e98512033c18424f393","last_reissued_at":"2026-07-05T09:59:15.642895Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:59:15.642895Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.07388","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:59:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZsKUktZZ41pwboOSlopPez/Au0s5l6S5WoawazLCJB8pdfsmF5Ww3UIi65sv8L9pGmfnW5acvmiz550xmTVqBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T05:49:49.685272Z"},"content_sha256":"d64256df236dc720ac9d67547b9f53df9e605c7b1a39af822bbad00b1f34c23d","schema_version":"1.0","event_id":"sha256:d64256df236dc720ac9d67547b9f53df9e605c7b1a39af822bbad00b1f34c23d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:UOJVERN4IQOGLKYCTEFD2GXD2Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Growth and Structure of alpha-Ta films for Quantum Circuit Integration","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Alex Abelson, Eunjeong Kim, Jonathan L DuBois, Loren D. Alegria, Paul M. Voyles, Soohyun Im, Vincenzo Lordi, Yaniv J. Rosen","submitted_at":"2024-05-12T22:26:57Z","abstract_excerpt":"Tantalum films incorporated into superconducting circuits have exhibited low surface losses, resulting in long-lived qubit states. Remaining loss pathways originate in microscopic defects which manifest as two level systems (TLS) at low temperature. These defects limit performance, so careful attention to tantalum film structures is critical for optimal use in quantum devices. In this work, we investigate the growth of tantalum using magnetron sputtering on sapphire, Si, and photoresist substrates. In the case of sapphire, we present procedures for growth of fully-oriented films with alpha-Ta "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.07388","kind":"arxiv","version":3},"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/2405.07388/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":"2026-07-05T09:59:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9TNR1EYos/yEcqFQqk5bxa5KhgCecZktsYON5h1Asp7vjRBkAxwpz8czRdkafwcB0UDIhvEEvymbc91knwQRCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T05:49:49.685854Z"},"content_sha256":"869a1416473af1747f84cf28d5892c1853e65b34e6c347684be38b1cf4c84f89","schema_version":"1.0","event_id":"sha256:869a1416473af1747f84cf28d5892c1853e65b34e6c347684be38b1cf4c84f89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/bundle.json","state_url":"https://pith.science/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/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":"2026-08-16T05:49:49Z","links":{"resolver":"https://pith.science/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z","bundle":"https://pith.science/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/bundle.json","state":"https://pith.science/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UOJVERN4IQOGLKYCTEFD2GXD2Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:UOJVERN4IQOGLKYCTEFD2GXD2Z","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":"68daaa9c24736adbfdca62cc876901f3f64b956d3ae7995980758b6eff8146ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2024-05-12T22:26:57Z","title_canon_sha256":"ecf2e90cbd464a1871cc6a7d1c1ca39a7cd37af2a54076f7ad664501de551860"},"schema_version":"1.0","source":{"id":"2405.07388","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.07388","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"arxiv_version","alias_value":"2405.07388v3","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.07388","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_12","alias_value":"UOJVERN4IQOG","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_16","alias_value":"UOJVERN4IQOGLKYC","created_at":"2026-07-05T09:59:15Z"},{"alias_kind":"pith_short_8","alias_value":"UOJVERN4","created_at":"2026-07-05T09:59:15Z"}],"graph_snapshots":[{"event_id":"sha256:869a1416473af1747f84cf28d5892c1853e65b34e6c347684be38b1cf4c84f89","target":"graph","created_at":"2026-07-05T09:59:15Z","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/2405.07388/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Tantalum films incorporated into superconducting circuits have exhibited low surface losses, resulting in long-lived qubit states. Remaining loss pathways originate in microscopic defects which manifest as two level systems (TLS) at low temperature. These defects limit performance, so careful attention to tantalum film structures is critical for optimal use in quantum devices. In this work, we investigate the growth of tantalum using magnetron sputtering on sapphire, Si, and photoresist substrates. In the case of sapphire, we present procedures for growth of fully-oriented films with alpha-Ta ","authors_text":"Alex Abelson, Eunjeong Kim, Jonathan L DuBois, Loren D. Alegria, Paul M. Voyles, Soohyun Im, Vincenzo Lordi, Yaniv J. Rosen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2024-05-12T22:26:57Z","title":"Growth and Structure of alpha-Ta films for Quantum Circuit Integration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.07388","kind":"arxiv","version":3},"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:d64256df236dc720ac9d67547b9f53df9e605c7b1a39af822bbad00b1f34c23d","target":"record","created_at":"2026-07-05T09:59:15Z","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":"68daaa9c24736adbfdca62cc876901f3f64b956d3ae7995980758b6eff8146ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2024-05-12T22:26:57Z","title_canon_sha256":"ecf2e90cbd464a1871cc6a7d1c1ca39a7cd37af2a54076f7ad664501de551860"},"schema_version":"1.0","source":{"id":"2405.07388","kind":"arxiv","version":3}},"canonical_sha256":"a3935245bc441c65ab02990a3d1ae3d64d221fd2745e3e98512033c18424f393","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3935245bc441c65ab02990a3d1ae3d64d221fd2745e3e98512033c18424f393","first_computed_at":"2026-07-05T09:59:15.642895Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:59:15.642895Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OvhaZj2U1WmJ8I7inXrQ+5aR9Kdr+wUZM1kvf7IEZxXudkCwEiEtkaRpYyyx5XEZX/pL3Q7KRKlQgYPRJ8h1Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:59:15.643468Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.07388","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d64256df236dc720ac9d67547b9f53df9e605c7b1a39af822bbad00b1f34c23d","sha256:869a1416473af1747f84cf28d5892c1853e65b34e6c347684be38b1cf4c84f89"],"state_sha256":"fb7e55fb704193dc36e87a860cf8d8b63ed8cf7256eb921d615ea8860e217fb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9r+gdYcndDbLCwNtdUS1AfGmRSxFrR1Z+dk5H9BbDRfOXIFg68Cglkz0cC9ySqVirq/9UrJykWD0IYGibNDTBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T05:49:49.689833Z","bundle_sha256":"63ab1aa2d1ac56b6abe8e9f5a3d7bdd109753f490242cb86cff200f1119d022b"}}