{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:UMJIG74XPRBQNBCACB5FJZ3ZCI","short_pith_number":"pith:UMJIG74X","canonical_record":{"source":{"id":"1112.3854","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-12-16T15:37:29Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"e2bbb00338e4aa534c0323c8a8b0a0efbd7502cbc6b25c570b65fb652ef69d20","abstract_canon_sha256":"533b375b3aa40a1cc6e7b3c8ee109e034efe9e7b91081c766d090ce9e9f6aa52"},"schema_version":"1.0"},"canonical_sha256":"a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e","source":{"kind":"arxiv","id":"1112.3854","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.3854","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"arxiv_version","alias_value":"1112.3854v2","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.3854","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"pith_short_12","alias_value":"UMJIG74XPRBQ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UMJIG74XPRBQNBCA","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UMJIG74X","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:UMJIG74XPRBQNBCACB5FJZ3ZCI","target":"record","payload":{"canonical_record":{"source":{"id":"1112.3854","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-12-16T15:37:29Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"e2bbb00338e4aa534c0323c8a8b0a0efbd7502cbc6b25c570b65fb652ef69d20","abstract_canon_sha256":"533b375b3aa40a1cc6e7b3c8ee109e034efe9e7b91081c766d090ce9e9f6aa52"},"schema_version":"1.0"},"canonical_sha256":"a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:21:27.176559Z","signature_b64":"qKAqhCi339oNNlbKB9fCDS33mjpLS95GzOpHTXK0fVvOsjbsBYTkhNS689oK7QK/JJg5s2Kl39ey3iYOM5eQBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e","last_reissued_at":"2026-05-18T02:21:27.175785Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:21:27.175785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.3854","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":"2026-05-18T02:21:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zJfzDLhOpcYttHQd69Wj67OyvZRctZ9RtTQx6rCaDpdycb4sJZQCFUq87/ctenfH8L59ZswvwOydmhlXVToMCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T17:19:58.050968Z"},"content_sha256":"4b74b313bfbfa41de4d518e1e72401c964d9f538ae899496e686dfa942739bca","schema_version":"1.0","event_id":"sha256:4b74b313bfbfa41de4d518e1e72401c964d9f538ae899496e686dfa942739bca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:UMJIG74XPRBQNBCACB5FJZ3ZCI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A sub-40 mHz linewidth laser based on a silicon single-crystal optical cavity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"physics.optics","authors_text":"C. Grebing, C. Hagemann, F. Riehle, J. Ye, L. Chen, M.J. Martin, T. Kessler, T. Legero, U. Sterr","submitted_at":"2011-12-16T15:37:29Z","abstract_excerpt":"State-of-the-art optical oscillators based on lasers frequency stabilized to high finesse optical cavities are limited by thermal noise that causes fluctuations of the cavity length. Thermal noise represents a fundamental limit to the stability of an optical interferometer and plays a key role in modern optical metrology. We demonstrate a novel design to reduce the thermal noise limit for optical cavities by an order of magnitude and present an experimental realization of this new cavity system, demonstrating the most stable oscillator of any kind to date. The cavity spacer and the mirror subs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.3854","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":""},"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":"2026-05-18T02:21:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UIySlPxlXte+9fr/q+Bu3VCQwZ+ExNT3sC0DvGpC4rqd52j63xcRuJKkuApOzk5AUUtAaAoNj/hc5cRkBpRADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T17:19:58.051329Z"},"content_sha256":"0ae52167a1970b0955dc18c46992238bf6ccadb42e67a82eba69c46fa321efb7","schema_version":"1.0","event_id":"sha256:0ae52167a1970b0955dc18c46992238bf6ccadb42e67a82eba69c46fa321efb7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/bundle.json","state_url":"https://pith.science/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/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":"2026-05-20T17:19:58Z","links":{"resolver":"https://pith.science/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI","bundle":"https://pith.science/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/bundle.json","state":"https://pith.science/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UMJIG74XPRBQNBCACB5FJZ3ZCI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:UMJIG74XPRBQNBCACB5FJZ3ZCI","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":"533b375b3aa40a1cc6e7b3c8ee109e034efe9e7b91081c766d090ce9e9f6aa52","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-12-16T15:37:29Z","title_canon_sha256":"e2bbb00338e4aa534c0323c8a8b0a0efbd7502cbc6b25c570b65fb652ef69d20"},"schema_version":"1.0","source":{"id":"1112.3854","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.3854","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"arxiv_version","alias_value":"1112.3854v2","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.3854","created_at":"2026-05-18T02:21:27Z"},{"alias_kind":"pith_short_12","alias_value":"UMJIG74XPRBQ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UMJIG74XPRBQNBCA","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UMJIG74X","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:0ae52167a1970b0955dc18c46992238bf6ccadb42e67a82eba69c46fa321efb7","target":"graph","created_at":"2026-05-18T02:21:27Z","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":"State-of-the-art optical oscillators based on lasers frequency stabilized to high finesse optical cavities are limited by thermal noise that causes fluctuations of the cavity length. Thermal noise represents a fundamental limit to the stability of an optical interferometer and plays a key role in modern optical metrology. We demonstrate a novel design to reduce the thermal noise limit for optical cavities by an order of magnitude and present an experimental realization of this new cavity system, demonstrating the most stable oscillator of any kind to date. The cavity spacer and the mirror subs","authors_text":"C. Grebing, C. Hagemann, F. Riehle, J. Ye, L. Chen, M.J. Martin, T. Kessler, T. Legero, U. Sterr","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-12-16T15:37:29Z","title":"A sub-40 mHz linewidth laser based on a silicon single-crystal optical cavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.3854","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":"sha256:4b74b313bfbfa41de4d518e1e72401c964d9f538ae899496e686dfa942739bca","target":"record","created_at":"2026-05-18T02:21:27Z","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":"533b375b3aa40a1cc6e7b3c8ee109e034efe9e7b91081c766d090ce9e9f6aa52","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-12-16T15:37:29Z","title_canon_sha256":"e2bbb00338e4aa534c0323c8a8b0a0efbd7502cbc6b25c570b65fb652ef69d20"},"schema_version":"1.0","source":{"id":"1112.3854","kind":"arxiv","version":2}},"canonical_sha256":"a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e","first_computed_at":"2026-05-18T02:21:27.175785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:21:27.175785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qKAqhCi339oNNlbKB9fCDS33mjpLS95GzOpHTXK0fVvOsjbsBYTkhNS689oK7QK/JJg5s2Kl39ey3iYOM5eQBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:21:27.176559Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.3854","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b74b313bfbfa41de4d518e1e72401c964d9f538ae899496e686dfa942739bca","sha256:0ae52167a1970b0955dc18c46992238bf6ccadb42e67a82eba69c46fa321efb7"],"state_sha256":"b9c219af306dd108849386f381b9e4e043e526dd2956f82146551760c3f44ab7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l09CXWLhpNdGrBoJj9bltE/xgvDtgq+smDRwH2R5uwR5wApOzvq8FvWdn6KpQPNVn3r3CPuLzkf/ioU36oRQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T17:19:58.053577Z","bundle_sha256":"3c173db8f106531364eeb815e9d9f707580a84100b93ea6d9b39bc8a15c1e717"}}