{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:YXRWRQ3VIGIFCYUDCCP6TWXYIK","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":"1152ffd9b3f2c7439ecc7b09e1b1c562314cfb3bed313c7fdfda34201da6ba12","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-03-11T18:26:29Z","title_canon_sha256":"1d75d13d5ac4938db225baf4da7adfec2d418da02a40a0f7b8b77e064ab54c1d"},"schema_version":"1.0","source":{"id":"2103.06851","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.06851","created_at":"2026-07-05T02:22:19Z"},{"alias_kind":"arxiv_version","alias_value":"2103.06851v1","created_at":"2026-07-05T02:22:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.06851","created_at":"2026-07-05T02:22:19Z"},{"alias_kind":"pith_short_12","alias_value":"YXRWRQ3VIGIF","created_at":"2026-07-05T02:22:19Z"},{"alias_kind":"pith_short_16","alias_value":"YXRWRQ3VIGIFCYUD","created_at":"2026-07-05T02:22:19Z"},{"alias_kind":"pith_short_8","alias_value":"YXRWRQ3V","created_at":"2026-07-05T02:22:19Z"}],"graph_snapshots":[{"event_id":"sha256:43da9124b12fc640b94fa0926b25608a92ce802c4b019278530a1a565326a79f","target":"graph","created_at":"2026-07-05T02:22:19Z","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/2103.06851/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe the operation of a free-space confocal optical microscope operated in a dilution refrigerator. The microscope is installed on a cold insertable probe to enable fast sample exchange while the refrigerator is held at low temperatures. A vector magnet provides a 6 T field normal to the sample and 1 T fields at arbitrary angles. A variety of optical microscopies and spectroscopies, including photoluminescence, Raman, magneto-optical Kerr effect, and spin relaxometry measurements are described, and some of the challenges associated with performing these measurements at milliKelvin tempe","authors_text":"B.J. Lawrie, C.E. Marvinney, M. Feldman, Y.Y. Pai","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-03-11T18:26:29Z","title":"Free-space confocal magneto-optical spectroscopies at milliKelvin temperatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.06851","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":"sha256:3d119126a0ef05bad308c84981051497b570692cd9e4a8f84b2d97ba6a385b7e","target":"record","created_at":"2026-07-05T02:22:19Z","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":"1152ffd9b3f2c7439ecc7b09e1b1c562314cfb3bed313c7fdfda34201da6ba12","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-03-11T18:26:29Z","title_canon_sha256":"1d75d13d5ac4938db225baf4da7adfec2d418da02a40a0f7b8b77e064ab54c1d"},"schema_version":"1.0","source":{"id":"2103.06851","kind":"arxiv","version":1}},"canonical_sha256":"c5e368c3754190516283109fe9daf842a5c7778405b03408f19f5fabf8cd6257","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5e368c3754190516283109fe9daf842a5c7778405b03408f19f5fabf8cd6257","first_computed_at":"2026-07-05T02:22:19.718915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:22:19.718915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y66CFrNOT2I81QV8ZNzkqcR5lCylT9PzPXPlvmJX7Qc3yMgidxt5HYRpOseBhXAwnDth8JjhTDfDjWDMSeTVBA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:22:19.719265Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.06851","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d119126a0ef05bad308c84981051497b570692cd9e4a8f84b2d97ba6a385b7e","sha256:43da9124b12fc640b94fa0926b25608a92ce802c4b019278530a1a565326a79f"],"state_sha256":"5ff3471ffde2e06d77097ebc738e0441d5616f316d94358b3158fdf46607a7b4"}