{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AD73J4JQHDUW4DTJ5ZQH3KJ6E7","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":"5037627bc2cc7f1910f0116f89c439b646b994fe6714860c46e22e1039062543","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-10T16:48:38Z","title_canon_sha256":"b728f1302d06841e5370e3066d6ed8c295fd0b31189a3e6d95eef4178c9dd88c"},"schema_version":"1.0","source":{"id":"1901.03262","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03262","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03262v2","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03262","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"pith_short_12","alias_value":"AD73J4JQHDUW","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AD73J4JQHDUW4DTJ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AD73J4JQ","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:db2d26a598f9f80a1328bae64fd5999f7b398a670988ff4cb267ad0443c4db88","target":"graph","created_at":"2026-05-17T23:44:12Z","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":"Yttrium orthosilicate (Y$_2$SiO$_5$, or YSO) has proved to be a convenient host for rare-earth ions used in demonstrations of microwave quantum memories and optical memories with microwave interfaces, and shows promise for coherent microwave--optical conversion owing to its favourable optical and spin properties. The strong coupling required by such microwave applications could be achieved using superconducting resonators patterned directly on Y$_2$SiO$_5$, and hence we investigate here the use of Y$_2$SiO$_5$ as an alternative to sapphire or silicon substrates for superconducting hybrid devic","authors_text":"Alban Ferrier, Christoph W. Zollitsch, Gavin Dold, James O'Sullivan, John J. L. Morton, Philippe Goldner, Sacha Welinski, S. E. de Graaf, Tobias Lindstr\\\"om","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-10T16:48:38Z","title":"High-cooperativity coupling of a rare-earth spin ensemble to a superconducting resonator using yttrium orthosilicate as a substrate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03262","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:d9e44a1367de43d87d096af3922a4e0283524cbe1caa8af1514a073e632b1364","target":"record","created_at":"2026-05-17T23:44:12Z","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":"5037627bc2cc7f1910f0116f89c439b646b994fe6714860c46e22e1039062543","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-10T16:48:38Z","title_canon_sha256":"b728f1302d06841e5370e3066d6ed8c295fd0b31189a3e6d95eef4178c9dd88c"},"schema_version":"1.0","source":{"id":"1901.03262","kind":"arxiv","version":2}},"canonical_sha256":"00ffb4f13038e96e0e69ee607da93e27d78b3bb6d9f1281b6d5fb40370399b38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00ffb4f13038e96e0e69ee607da93e27d78b3bb6d9f1281b6d5fb40370399b38","first_computed_at":"2026-05-17T23:44:12.384609Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:12.384609Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7/0Ooh0dtblMDO3Os+NW/pqMFrUm69kWvJ8oR1eB3nx3FK9MFpaQ5NLx4O1NBGW6xDCsoitAANicz+4ZGHbRAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:12.385153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.03262","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9e44a1367de43d87d096af3922a4e0283524cbe1caa8af1514a073e632b1364","sha256:db2d26a598f9f80a1328bae64fd5999f7b398a670988ff4cb267ad0443c4db88"],"state_sha256":"5a0bf82a9a8770376508c7072dfa0d894cf6d7c4612831b8ca295297f4002346"}