{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:JUBMCEKT4M56TGHXETK6AZ5LK2","short_pith_number":"pith:JUBMCEKT","canonical_record":{"source":{"id":"2309.15969","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-27T19:41:23Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"e170a26a7f66c9bb385b95e5fba6c9b30fede981ccffaed89123181cb85ef5ac","abstract_canon_sha256":"bfd11c2a1400fb5e530871ed2cbde89ccf755a6fac55d1f3494a0f5a3bf1f0d7"},"schema_version":"1.0"},"canonical_sha256":"4d02c11153e33be998f724d5e067ab56b51a39ce9cb01d3dd16a42209782921f","source":{"kind":"arxiv","id":"2309.15969","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.15969","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2309.15969v1","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.15969","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"JUBMCEKT4M56","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"JUBMCEKT4M56TGHX","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"JUBMCEKT","created_at":"2026-07-05T06:55:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:JUBMCEKT4M56TGHXETK6AZ5LK2","target":"record","payload":{"canonical_record":{"source":{"id":"2309.15969","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-27T19:41:23Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"e170a26a7f66c9bb385b95e5fba6c9b30fede981ccffaed89123181cb85ef5ac","abstract_canon_sha256":"bfd11c2a1400fb5e530871ed2cbde89ccf755a6fac55d1f3494a0f5a3bf1f0d7"},"schema_version":"1.0"},"canonical_sha256":"4d02c11153e33be998f724d5e067ab56b51a39ce9cb01d3dd16a42209782921f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:55:09.402250Z","signature_b64":"MucKfoSChRdEdZnE19+BmhWEmu6xr02uP/y6xHVspqXEx6isaXu0/IW0RVjafRcPl3Y5rdGfiv1fZP33AbOaDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d02c11153e33be998f724d5e067ab56b51a39ce9cb01d3dd16a42209782921f","last_reissued_at":"2026-07-05T06:55:09.401766Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:55:09.401766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.15969","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":"2026-07-05T06:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f5PQieQOGSW408NF0lYsmvwtPduUoG7wIX8q9uT3aYEpsOKQu3fvTNSL9ruBCWD+orTK/QUPDR5jO1vNcK9FBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T14:55:25.875155Z"},"content_sha256":"097198aa406f0547149ae82d29738ceacc53f88b937990fa98c3bad0f40b336f","schema_version":"1.0","event_id":"sha256:097198aa406f0547149ae82d29738ceacc53f88b937990fa98c3bad0f40b336f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:JUBMCEKT4M56TGHXETK6AZ5LK2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical tuning of the diamond Fermi level measured by correlated scanning probe microscopy and quantum defect spectroscopy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"quant-ph","authors_text":"Christian Pederson, David S. Ginger, Fang Zhao, Kai-Mei C. Fu, Rajiv Giridharagopal, Scott T. Dunham, Yevgeny Raitses","submitted_at":"2023-09-27T19:41:23Z","abstract_excerpt":"Quantum technologies based on quantum point defects in crystals require control over the defect charge state. Here we tune the charge state of shallow nitrogen-vacancy and silicon-vacancy centers by locally oxidizing a hydrogenated surface with moderate optical excitation and simultaneous spectral monitoring. The loss of conductivity and change in work function due to oxidation are measured in atmosphere using conductive atomic force microscopy (C-AFM) and Kelvin probe force microscopy (KPFM). We correlate these scanning probe measurements with optical spectroscopy of the nitrogen-vacancy and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.15969","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.15969/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Akhd5kvJCzBUkYqwlR7us38PAglBd4TlMueJsMDF747P5tR6iQbzYufP2toLi/NRut2lmNerK69bRy1z3qpZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T14:55:25.876012Z"},"content_sha256":"88e73595100dc030f5fbd088cb38123d98b0a03a3df53a33bf28e02f67b448d2","schema_version":"1.0","event_id":"sha256:88e73595100dc030f5fbd088cb38123d98b0a03a3df53a33bf28e02f67b448d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/bundle.json","state_url":"https://pith.science/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/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":"2026-08-01T14:55:25Z","links":{"resolver":"https://pith.science/pith/JUBMCEKT4M56TGHXETK6AZ5LK2","bundle":"https://pith.science/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/bundle.json","state":"https://pith.science/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JUBMCEKT4M56TGHXETK6AZ5LK2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:JUBMCEKT4M56TGHXETK6AZ5LK2","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":"bfd11c2a1400fb5e530871ed2cbde89ccf755a6fac55d1f3494a0f5a3bf1f0d7","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-27T19:41:23Z","title_canon_sha256":"e170a26a7f66c9bb385b95e5fba6c9b30fede981ccffaed89123181cb85ef5ac"},"schema_version":"1.0","source":{"id":"2309.15969","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.15969","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2309.15969v1","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.15969","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"JUBMCEKT4M56","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"JUBMCEKT4M56TGHX","created_at":"2026-07-05T06:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"JUBMCEKT","created_at":"2026-07-05T06:55:09Z"}],"graph_snapshots":[{"event_id":"sha256:88e73595100dc030f5fbd088cb38123d98b0a03a3df53a33bf28e02f67b448d2","target":"graph","created_at":"2026-07-05T06:55:09Z","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/2309.15969/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum technologies based on quantum point defects in crystals require control over the defect charge state. Here we tune the charge state of shallow nitrogen-vacancy and silicon-vacancy centers by locally oxidizing a hydrogenated surface with moderate optical excitation and simultaneous spectral monitoring. The loss of conductivity and change in work function due to oxidation are measured in atmosphere using conductive atomic force microscopy (C-AFM) and Kelvin probe force microscopy (KPFM). We correlate these scanning probe measurements with optical spectroscopy of the nitrogen-vacancy and ","authors_text":"Christian Pederson, David S. Ginger, Fang Zhao, Kai-Mei C. Fu, Rajiv Giridharagopal, Scott T. Dunham, Yevgeny Raitses","cross_cats":["physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-27T19:41:23Z","title":"Optical tuning of the diamond Fermi level measured by correlated scanning probe microscopy and quantum defect spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.15969","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":"sha256:097198aa406f0547149ae82d29738ceacc53f88b937990fa98c3bad0f40b336f","target":"record","created_at":"2026-07-05T06:55:09Z","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":"bfd11c2a1400fb5e530871ed2cbde89ccf755a6fac55d1f3494a0f5a3bf1f0d7","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-27T19:41:23Z","title_canon_sha256":"e170a26a7f66c9bb385b95e5fba6c9b30fede981ccffaed89123181cb85ef5ac"},"schema_version":"1.0","source":{"id":"2309.15969","kind":"arxiv","version":1}},"canonical_sha256":"4d02c11153e33be998f724d5e067ab56b51a39ce9cb01d3dd16a42209782921f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d02c11153e33be998f724d5e067ab56b51a39ce9cb01d3dd16a42209782921f","first_computed_at":"2026-07-05T06:55:09.401766Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:55:09.401766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MucKfoSChRdEdZnE19+BmhWEmu6xr02uP/y6xHVspqXEx6isaXu0/IW0RVjafRcPl3Y5rdGfiv1fZP33AbOaDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:55:09.402250Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.15969","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:097198aa406f0547149ae82d29738ceacc53f88b937990fa98c3bad0f40b336f","sha256:88e73595100dc030f5fbd088cb38123d98b0a03a3df53a33bf28e02f67b448d2"],"state_sha256":"fccd5caad6113c32455054a7fb18b52bfcefb25999c4678ae91d794e65110782"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UBNWmRABLmbZMZneQ9omR81gFyBTNI/Lha+62gc6aPUJYKS8JB+mGW9hR5CBlwJpGQArnoOZQY9g+Rc6PwlTBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T14:55:25.880818Z","bundle_sha256":"4a0cf8e61207eb87501ee053c954d2aa59f61b489f4bbf4a2c5c1d5d484ea07a"}}