{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RZLUO4BCMLKV2JFG2VMR7H4EFO","short_pith_number":"pith:RZLUO4BC","canonical_record":{"source":{"id":"1203.0177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-03-01T13:17:29Z","cross_cats_sorted":[],"title_canon_sha256":"9a59fe500a17f7fe5fc13cc811616cd178a3586132767163d83c81bd5bc7add8","abstract_canon_sha256":"7f827e7b8509eafe84f85552ff48f684795efc2ff0a7dc477df215ccc69929f7"},"schema_version":"1.0"},"canonical_sha256":"8e5747702262d55d24a6d5591f9f842b8e677c630eacf142a3a46d3bd2414222","source":{"kind":"arxiv","id":"1203.0177","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.0177","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"arxiv_version","alias_value":"1203.0177v1","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.0177","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"pith_short_12","alias_value":"RZLUO4BCMLKV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RZLUO4BCMLKV2JFG","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RZLUO4BC","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RZLUO4BCMLKV2JFG2VMR7H4EFO","target":"record","payload":{"canonical_record":{"source":{"id":"1203.0177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-03-01T13:17:29Z","cross_cats_sorted":[],"title_canon_sha256":"9a59fe500a17f7fe5fc13cc811616cd178a3586132767163d83c81bd5bc7add8","abstract_canon_sha256":"7f827e7b8509eafe84f85552ff48f684795efc2ff0a7dc477df215ccc69929f7"},"schema_version":"1.0"},"canonical_sha256":"8e5747702262d55d24a6d5591f9f842b8e677c630eacf142a3a46d3bd2414222","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:01:02.953466Z","signature_b64":"O4T+TSEQBzdicDIy4pbsedCQV8EgdGbOgwlzpVZPWWPyXFTNTDBF2J6ODlfAWnFHyt/7aD7CDACG+grNjCHKCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e5747702262d55d24a6d5591f9f842b8e677c630eacf142a3a46d3bd2414222","last_reissued_at":"2026-05-18T04:01:02.952666Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:01:02.952666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.0177","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":"2026-05-18T04:01:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YD/VXdZj3Nl1VrgT82+aVHTl1rqTUsC+D7KL8a3LsGnHxlcQdRA676Cw6idPoorNh3TayuWnGnSi6P995pURAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:08:41.009784Z"},"content_sha256":"28cb3a4d979a068f179e74a9c6ee239565a9cc149f291ac45753e518a5016566","schema_version":"1.0","event_id":"sha256:28cb3a4d979a068f179e74a9c6ee239565a9cc149f291ac45753e518a5016566"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RZLUO4BCMLKV2JFG2VMR7H4EFO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sub-milliKelvin spatial thermometry of a single Doppler cooled ion in a Paul trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"G. Saathoff, M. Herrmann, S. Kn\\\"unz, Th. Udem, T. W. H\\\"ansch, V. Batteiger","submitted_at":"2012-03-01T13:17:29Z","abstract_excerpt":"We report on observations of thermal motion of a single, Doppler-cooled ion along the axis of a linear radio-frequency quadrupole trap. We show that for a harmonic potential the thermal occupation of energy levels leads to Gaussian distribution of the ion's axial position. The dependence of the spatial thermal spread on the trap potential is used for precise calibration of our imaging system's point spread function and sub-milliKelvin thermometry. We employ this technique to investigate the laser detuning dependence of the Doppler temperature."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0177","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":""},"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":"2026-05-18T04:01:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MfW8mMJ/8ZgLZu1AJJTMelW6D7zYmRCgSCn7Dv4jA2h6TlYQx2gRKZJJEhynrP4NRpvgMQ+7ak0VdHVt5ANvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:08:41.010581Z"},"content_sha256":"62609e067e4490fd05969890a3725d19261f80acc913e8dc6c081e6c7d03d8f5","schema_version":"1.0","event_id":"sha256:62609e067e4490fd05969890a3725d19261f80acc913e8dc6c081e6c7d03d8f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/bundle.json","state_url":"https://pith.science/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/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":"2026-05-27T09:08:41Z","links":{"resolver":"https://pith.science/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO","bundle":"https://pith.science/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/bundle.json","state":"https://pith.science/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RZLUO4BCMLKV2JFG2VMR7H4EFO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RZLUO4BCMLKV2JFG2VMR7H4EFO","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":"7f827e7b8509eafe84f85552ff48f684795efc2ff0a7dc477df215ccc69929f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-03-01T13:17:29Z","title_canon_sha256":"9a59fe500a17f7fe5fc13cc811616cd178a3586132767163d83c81bd5bc7add8"},"schema_version":"1.0","source":{"id":"1203.0177","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.0177","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"arxiv_version","alias_value":"1203.0177v1","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.0177","created_at":"2026-05-18T04:01:02Z"},{"alias_kind":"pith_short_12","alias_value":"RZLUO4BCMLKV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RZLUO4BCMLKV2JFG","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RZLUO4BC","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:62609e067e4490fd05969890a3725d19261f80acc913e8dc6c081e6c7d03d8f5","target":"graph","created_at":"2026-05-18T04:01:02Z","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 report on observations of thermal motion of a single, Doppler-cooled ion along the axis of a linear radio-frequency quadrupole trap. We show that for a harmonic potential the thermal occupation of energy levels leads to Gaussian distribution of the ion's axial position. The dependence of the spatial thermal spread on the trap potential is used for precise calibration of our imaging system's point spread function and sub-milliKelvin thermometry. We employ this technique to investigate the laser detuning dependence of the Doppler temperature.","authors_text":"G. Saathoff, M. Herrmann, S. Kn\\\"unz, Th. Udem, T. W. H\\\"ansch, V. Batteiger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-03-01T13:17:29Z","title":"Sub-milliKelvin spatial thermometry of a single Doppler cooled ion in a Paul trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0177","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":"sha256:28cb3a4d979a068f179e74a9c6ee239565a9cc149f291ac45753e518a5016566","target":"record","created_at":"2026-05-18T04:01:02Z","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":"7f827e7b8509eafe84f85552ff48f684795efc2ff0a7dc477df215ccc69929f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-03-01T13:17:29Z","title_canon_sha256":"9a59fe500a17f7fe5fc13cc811616cd178a3586132767163d83c81bd5bc7add8"},"schema_version":"1.0","source":{"id":"1203.0177","kind":"arxiv","version":1}},"canonical_sha256":"8e5747702262d55d24a6d5591f9f842b8e677c630eacf142a3a46d3bd2414222","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e5747702262d55d24a6d5591f9f842b8e677c630eacf142a3a46d3bd2414222","first_computed_at":"2026-05-18T04:01:02.952666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:01:02.952666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O4T+TSEQBzdicDIy4pbsedCQV8EgdGbOgwlzpVZPWWPyXFTNTDBF2J6ODlfAWnFHyt/7aD7CDACG+grNjCHKCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:01:02.953466Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.0177","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28cb3a4d979a068f179e74a9c6ee239565a9cc149f291ac45753e518a5016566","sha256:62609e067e4490fd05969890a3725d19261f80acc913e8dc6c081e6c7d03d8f5"],"state_sha256":"4b504d66c85180b76ed8f00db653473fb0b9e58ba5961a2fffda807c29129e0f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iColr52fAGWc/0eWELRXFvO4CcdkZ/HhTRht2yYvmGHnBk8Ei8ON+JdZja+KbnAqA2EPZ7dk7qw2zwP22qvIAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T09:08:41.014070Z","bundle_sha256":"a9116f09e2dd4ec646ac6c1df203160e95ccc87710d4da355f840f133ffe1ee5"}}