{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:COTO53XITJCPDZKIY4KNRCHNSB","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":"568061fbf1e6e481647a9b4a8dbe9435cc24feccde09508b180d437a6d28b8c2","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-13T13:44:52Z","title_canon_sha256":"0037b9867dc0534135fe9f2d7d1ba1610681a96369a20582fd04a64e7e1a2525"},"schema_version":"1.0","source":{"id":"1505.03381","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.03381","created_at":"2026-05-18T01:34:41Z"},{"alias_kind":"arxiv_version","alias_value":"1505.03381v1","created_at":"2026-05-18T01:34:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.03381","created_at":"2026-05-18T01:34:41Z"},{"alias_kind":"pith_short_12","alias_value":"COTO53XITJCP","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"COTO53XITJCPDZKI","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"COTO53XI","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:6e5871ac1941ed164515669d000b494636302b1f419b0e802dcc1cc5aaa791a9","target":"graph","created_at":"2026-05-18T01:34:41Z","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":"We study the vacuum-induced degradation of high-finesse optical cavities with mirror coatings composed of SiO$_2$-Ta$_{2}$O$_{5}$ dielectric stacks, and present methods to protect these coatings and to recover their initial quality factor. For separate coatings with reflectivities centered at 370 nm and 422 nm, a vacuum-induced continuous increase in optical loss occurs if the surface-layer coating is made of Ta$_{2}$O$_{5}$, while it does not occur if it is made of SiO$_2$. The incurred optical loss can be reversed by filling the vacuum chamber with oxygen at atmospheric pressure, and the rec","authors_text":"Alexei Bylinskii, Boris Braverman, Branislav Jelenkovi\\'c, Dorian Gangloff, Isaac Chuang, Junru Li, Kai Aichholz, Leon Karpa, Marko Cetina, Michael Gutierrez, Molu Shi, Rosanna Nichols, Tailin Wu, Vladan Vuleti\\'c","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-13T13:44:52Z","title":"Preventing and Reversing Vacuum-Induced Optical Losses in High-Finesse Tantalum (V) Oxide Mirror Coatings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.03381","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":"sha256:6f8594e4ac0fc323bf6e6098161010ade9b929d05bfc5e219cc052b600a3e03e","target":"record","created_at":"2026-05-18T01:34:41Z","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":"568061fbf1e6e481647a9b4a8dbe9435cc24feccde09508b180d437a6d28b8c2","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-13T13:44:52Z","title_canon_sha256":"0037b9867dc0534135fe9f2d7d1ba1610681a96369a20582fd04a64e7e1a2525"},"schema_version":"1.0","source":{"id":"1505.03381","kind":"arxiv","version":1}},"canonical_sha256":"13a6eeeee89a44f1e548c714d888ed906c65b9c788401948e1ed340ca0f922cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13a6eeeee89a44f1e548c714d888ed906c65b9c788401948e1ed340ca0f922cc","first_computed_at":"2026-05-18T01:34:41.790462Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:34:41.790462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x8ECompN8tXI1M0YyefMbu4hYbKjSddiufuQ3mh4FtyS/5KBWsxYbv6gG6ibblYi3vr/nLIVvJXlT4iPkdd7Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:34:41.791133Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.03381","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f8594e4ac0fc323bf6e6098161010ade9b929d05bfc5e219cc052b600a3e03e","sha256:6e5871ac1941ed164515669d000b494636302b1f419b0e802dcc1cc5aaa791a9"],"state_sha256":"fbe1bbc31905a4db049a1084576fe5ebc2054a6b29c705f98e305c7cf06f3eb1"}