{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:65D36HEGIF2LLWNRIP7JZZSRQZ","short_pith_number":"pith:65D36HEG","canonical_record":{"source":{"id":"2606.18522","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2026-06-16T22:37:11Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"78ec7b0bdbf8858ed190eb68627ae2d9cd3b3cfa71860e5d8169b506d29176b8","abstract_canon_sha256":"1f0c7a0467848b519dfc063d0d492964b0a25f0ad98de9a3dded7883d8cd0954"},"schema_version":"1.0"},"canonical_sha256":"f747bf1c864174b5d9b143fe9ce6518678f3ac794dc43ea8d9b15c265b33246b","source":{"kind":"arxiv","id":"2606.18522","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18522","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18522v1","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18522","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_12","alias_value":"65D36HEGIF2L","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_16","alias_value":"65D36HEGIF2LLWNR","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_8","alias_value":"65D36HEG","created_at":"2026-06-19T16:11:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:65D36HEGIF2LLWNRIP7JZZSRQZ","target":"record","payload":{"canonical_record":{"source":{"id":"2606.18522","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2026-06-16T22:37:11Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"78ec7b0bdbf8858ed190eb68627ae2d9cd3b3cfa71860e5d8169b506d29176b8","abstract_canon_sha256":"1f0c7a0467848b519dfc063d0d492964b0a25f0ad98de9a3dded7883d8cd0954"},"schema_version":"1.0"},"canonical_sha256":"f747bf1c864174b5d9b143fe9ce6518678f3ac794dc43ea8d9b15c265b33246b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:11:39.962793Z","signature_b64":"WXQxQKOpG+krLFqNKvvIOJvmhiinsFtLxaN9sKF0m4cSQzkP7ROLTwE4QEiCeI0C/Y4qCUZPh+frgPCc88NPAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f747bf1c864174b5d9b143fe9ce6518678f3ac794dc43ea8d9b15c265b33246b","last_reissued_at":"2026-06-19T16:11:39.962382Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:11:39.962382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.18522","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-19T16:11:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a3d6yt9wV1V2dDGhg4KgR+nDm7KD/T7hOphRpio/46aJ1WDUL4qSdXdU4Oegdcze+6x88M2b+2u1ZVRhbuA5Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T13:39:07.889015Z"},"content_sha256":"de935c92e6b9ad354c77e255ffd7726968182e794ee163c9de82d61f6b65eb96","schema_version":"1.0","event_id":"sha256:de935c92e6b9ad354c77e255ffd7726968182e794ee163c9de82d61f6b65eb96"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:65D36HEGIF2LLWNRIP7JZZSRQZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Piezoelectric resonators in thin-film barium titanate from room temperature to millikelvin","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.app-ph","authors_text":"Hao Tian, Kasra Sardashti, Mohammad Mirhosseini, Nuha Akhtar, Shu-Yuan Chang","submitted_at":"2026-06-16T22:37:11Z","abstract_excerpt":"Ferroelectric materials, with their strong nonlinearities, underpin key technologies across radio-frequency (RF) signal processing, optical communications, and emerging quantum systems. Barium titanate (BTO) is a notable example, combining strong piezoelectric and electro-optic responses. While bulk BTO has been studied for decades, the piezoelectric properties of its recently available thin films, and their behavior at the millikelvin temperatures relevant to quantum hardware, remain largely unexplored. Here, we fabricate and characterize surface acoustic wave (SAW) resonators on thin-film BT"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18522","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/2606.18522/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":"2026-06-19T16:11:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fk3QZavYGJ6nhNEQNXHyV5t0ypLkv67g72f5v6KIj69Ixn2SftMcOrF2pwO56s+q9hsOQifTT2KsFhZPIs44Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T13:39:07.889398Z"},"content_sha256":"34a2d7c7d7c8e050d184c9948737c4b13286bdc5e73e01557028ad8502b26507","schema_version":"1.0","event_id":"sha256:34a2d7c7d7c8e050d184c9948737c4b13286bdc5e73e01557028ad8502b26507"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/bundle.json","state_url":"https://pith.science/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/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":"2026-06-30T13:39:07Z","links":{"resolver":"https://pith.science/pith/65D36HEGIF2LLWNRIP7JZZSRQZ","bundle":"https://pith.science/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/bundle.json","state":"https://pith.science/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65D36HEGIF2LLWNRIP7JZZSRQZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:65D36HEGIF2LLWNRIP7JZZSRQZ","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":"1f0c7a0467848b519dfc063d0d492964b0a25f0ad98de9a3dded7883d8cd0954","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2026-06-16T22:37:11Z","title_canon_sha256":"78ec7b0bdbf8858ed190eb68627ae2d9cd3b3cfa71860e5d8169b506d29176b8"},"schema_version":"1.0","source":{"id":"2606.18522","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18522","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18522v1","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18522","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_12","alias_value":"65D36HEGIF2L","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_16","alias_value":"65D36HEGIF2LLWNR","created_at":"2026-06-19T16:11:39Z"},{"alias_kind":"pith_short_8","alias_value":"65D36HEG","created_at":"2026-06-19T16:11:39Z"}],"graph_snapshots":[{"event_id":"sha256:34a2d7c7d7c8e050d184c9948737c4b13286bdc5e73e01557028ad8502b26507","target":"graph","created_at":"2026-06-19T16:11:39Z","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/2606.18522/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ferroelectric materials, with their strong nonlinearities, underpin key technologies across radio-frequency (RF) signal processing, optical communications, and emerging quantum systems. Barium titanate (BTO) is a notable example, combining strong piezoelectric and electro-optic responses. While bulk BTO has been studied for decades, the piezoelectric properties of its recently available thin films, and their behavior at the millikelvin temperatures relevant to quantum hardware, remain largely unexplored. Here, we fabricate and characterize surface acoustic wave (SAW) resonators on thin-film BT","authors_text":"Hao Tian, Kasra Sardashti, Mohammad Mirhosseini, Nuha Akhtar, Shu-Yuan Chang","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2026-06-16T22:37:11Z","title":"Piezoelectric resonators in thin-film barium titanate from room temperature to millikelvin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18522","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:de935c92e6b9ad354c77e255ffd7726968182e794ee163c9de82d61f6b65eb96","target":"record","created_at":"2026-06-19T16:11:39Z","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":"1f0c7a0467848b519dfc063d0d492964b0a25f0ad98de9a3dded7883d8cd0954","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2026-06-16T22:37:11Z","title_canon_sha256":"78ec7b0bdbf8858ed190eb68627ae2d9cd3b3cfa71860e5d8169b506d29176b8"},"schema_version":"1.0","source":{"id":"2606.18522","kind":"arxiv","version":1}},"canonical_sha256":"f747bf1c864174b5d9b143fe9ce6518678f3ac794dc43ea8d9b15c265b33246b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f747bf1c864174b5d9b143fe9ce6518678f3ac794dc43ea8d9b15c265b33246b","first_computed_at":"2026-06-19T16:11:39.962382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:11:39.962382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WXQxQKOpG+krLFqNKvvIOJvmhiinsFtLxaN9sKF0m4cSQzkP7ROLTwE4QEiCeI0C/Y4qCUZPh+frgPCc88NPAQ==","signature_status":"signed_v1","signed_at":"2026-06-19T16:11:39.962793Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.18522","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de935c92e6b9ad354c77e255ffd7726968182e794ee163c9de82d61f6b65eb96","sha256:34a2d7c7d7c8e050d184c9948737c4b13286bdc5e73e01557028ad8502b26507"],"state_sha256":"4e0969086379b0afcb4d8ad1e860b5a7d61e8a0e9b754c8e460b4fe2318f8b40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JUCbehRp1FqIMp6BzyuQAd5zSG86HCYEeUNs+7aQHrgYGSqlKgbihP+MdxUDjn3TyKNxN5lGAhb48GTDGjVCBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T13:39:07.891256Z","bundle_sha256":"d61a9dc201387bc64a39b1138be833b7e25f6793eaf0bdaa3a2b2f0c9df81a6a"}}