{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:S3O7H7SHILCVBHJ5ANHGIMMCWE","short_pith_number":"pith:S3O7H7SH","canonical_record":{"source":{"id":"2206.13698","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-28T02:10:39Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"ec68cfc08c9c6ac159b109ecb80ddf7183b40f3138cf1e1925edf14e88e4d41b","abstract_canon_sha256":"2f08862f55a263b5655aa28c9ec1e7719ad319ee471f559623002c4ee1c57f0b"},"schema_version":"1.0"},"canonical_sha256":"96ddf3fe4742c5509d3d034e643182b10ee82e2bac6d99731ca64e442dade48e","source":{"kind":"arxiv","id":"2206.13698","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.13698","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"arxiv_version","alias_value":"2206.13698v1","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.13698","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_12","alias_value":"S3O7H7SHILCV","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_16","alias_value":"S3O7H7SHILCVBHJ5","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_8","alias_value":"S3O7H7SH","created_at":"2026-07-05T06:05:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:S3O7H7SHILCVBHJ5ANHGIMMCWE","target":"record","payload":{"canonical_record":{"source":{"id":"2206.13698","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-28T02:10:39Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"ec68cfc08c9c6ac159b109ecb80ddf7183b40f3138cf1e1925edf14e88e4d41b","abstract_canon_sha256":"2f08862f55a263b5655aa28c9ec1e7719ad319ee471f559623002c4ee1c57f0b"},"schema_version":"1.0"},"canonical_sha256":"96ddf3fe4742c5509d3d034e643182b10ee82e2bac6d99731ca64e442dade48e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:05:58.793028Z","signature_b64":"Acmke8cDFA7LZferuAARU36XzKdJbVzrLUsHiZ7qc3dt7TJukpvEJgibU+zb/oDle+wfL6JJYD03WtVMZG6jBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96ddf3fe4742c5509d3d034e643182b10ee82e2bac6d99731ca64e442dade48e","last_reissued_at":"2026-07-05T06:05:58.792585Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:05:58.792585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.13698","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":"2026-07-05T06:05:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"76PykYIa9L0eBpzC9bI1dnew27ERpy7VW5/8WPgNGFdJeqZfIobjvdGtVnXxxKyNxXRlEi8c5d26CcPfcxp3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T20:51:26.536632Z"},"content_sha256":"61581cc6c4cd86c78c9e1abfcfdddc6bc366f9810b3da753f847d00a17299abd","schema_version":"1.0","event_id":"sha256:61581cc6c4cd86c78c9e1abfcfdddc6bc366f9810b3da753f847d00a17299abd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:S3O7H7SHILCVBHJ5ANHGIMMCWE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Neutral silicon vacancy centers in undoped diamond via surface control","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"quant-ph","authors_text":"Andrew M. Edmonds, Brendan Shields, Josh A. Zuber, Lila V. H. Rodgers, Marcel.li Grimau, Marietta Batzer, Matthew L. Markham, Minghao Li, Nathalie P. de Leon, Nicola Palmer, Patrick Maletinsky, Paul Stevenson, Robert J. Cava, Xin Gui, Zi-Huai Zhang","submitted_at":"2022-06-28T02:10:39Z","abstract_excerpt":"Neutral silicon vacancy centers (SiV0) in diamond are promising candidates for quantum networks because of their long spin coherence times and stable, narrow optical transitions. However, stabilizing SiV0 requires high purity, boron doped diamond, which is not a readily available material. Here, we demonstrate an alternative approach via chemical control of the diamond surface. We use low-damage chemical processing and annealing in a hydrogen environment to realize reversible and highly stable charge state tuning in undoped diamond. The resulting SiV0 centers display optically detected magneti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.13698","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/2206.13698/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":"2026-07-05T06:05:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CukKvxXwMCCMZmSp6P/CgUxJkg7xqAoAKpnMP5vsNcMsZColb2EtV0VXABJ6TGahZL/uiO7RSYhEb0SPisBKAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T20:51:26.537649Z"},"content_sha256":"a00416a5459a195113787b222f43a38588b39fc42fd8add72de96d6d720cade5","schema_version":"1.0","event_id":"sha256:a00416a5459a195113787b222f43a38588b39fc42fd8add72de96d6d720cade5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/bundle.json","state_url":"https://pith.science/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/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":"2026-08-19T20:51:26Z","links":{"resolver":"https://pith.science/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE","bundle":"https://pith.science/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/bundle.json","state":"https://pith.science/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S3O7H7SHILCVBHJ5ANHGIMMCWE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:S3O7H7SHILCVBHJ5ANHGIMMCWE","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":"2f08862f55a263b5655aa28c9ec1e7719ad319ee471f559623002c4ee1c57f0b","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-28T02:10:39Z","title_canon_sha256":"ec68cfc08c9c6ac159b109ecb80ddf7183b40f3138cf1e1925edf14e88e4d41b"},"schema_version":"1.0","source":{"id":"2206.13698","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.13698","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"arxiv_version","alias_value":"2206.13698v1","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.13698","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_12","alias_value":"S3O7H7SHILCV","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_16","alias_value":"S3O7H7SHILCVBHJ5","created_at":"2026-07-05T06:05:58Z"},{"alias_kind":"pith_short_8","alias_value":"S3O7H7SH","created_at":"2026-07-05T06:05:58Z"}],"graph_snapshots":[{"event_id":"sha256:a00416a5459a195113787b222f43a38588b39fc42fd8add72de96d6d720cade5","target":"graph","created_at":"2026-07-05T06:05:58Z","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/2206.13698/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neutral silicon vacancy centers (SiV0) in diamond are promising candidates for quantum networks because of their long spin coherence times and stable, narrow optical transitions. However, stabilizing SiV0 requires high purity, boron doped diamond, which is not a readily available material. Here, we demonstrate an alternative approach via chemical control of the diamond surface. We use low-damage chemical processing and annealing in a hydrogen environment to realize reversible and highly stable charge state tuning in undoped diamond. The resulting SiV0 centers display optically detected magneti","authors_text":"Andrew M. Edmonds, Brendan Shields, Josh A. Zuber, Lila V. H. Rodgers, Marcel.li Grimau, Marietta Batzer, Matthew L. Markham, Minghao Li, Nathalie P. de Leon, Nicola Palmer, Patrick Maletinsky, Paul Stevenson, Robert J. Cava, Xin Gui, Zi-Huai Zhang","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-28T02:10:39Z","title":"Neutral silicon vacancy centers in undoped diamond via surface control"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.13698","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":"sha256:61581cc6c4cd86c78c9e1abfcfdddc6bc366f9810b3da753f847d00a17299abd","target":"record","created_at":"2026-07-05T06:05:58Z","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":"2f08862f55a263b5655aa28c9ec1e7719ad319ee471f559623002c4ee1c57f0b","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-28T02:10:39Z","title_canon_sha256":"ec68cfc08c9c6ac159b109ecb80ddf7183b40f3138cf1e1925edf14e88e4d41b"},"schema_version":"1.0","source":{"id":"2206.13698","kind":"arxiv","version":1}},"canonical_sha256":"96ddf3fe4742c5509d3d034e643182b10ee82e2bac6d99731ca64e442dade48e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96ddf3fe4742c5509d3d034e643182b10ee82e2bac6d99731ca64e442dade48e","first_computed_at":"2026-07-05T06:05:58.792585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:05:58.792585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Acmke8cDFA7LZferuAARU36XzKdJbVzrLUsHiZ7qc3dt7TJukpvEJgibU+zb/oDle+wfL6JJYD03WtVMZG6jBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:05:58.793028Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.13698","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61581cc6c4cd86c78c9e1abfcfdddc6bc366f9810b3da753f847d00a17299abd","sha256:a00416a5459a195113787b222f43a38588b39fc42fd8add72de96d6d720cade5"],"state_sha256":"07117dbd3c978faa3fb704e4b76421b28314279246e21b4f5d4ac7dbbe037625"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eUkZrBi+uDtMf6teBao7JiRGPr4Lmh5lcqSYytPZXYpiCcUoX9o/1dhSo2Fj4kk6+n5mQoGYfL0aHXmP5TYMAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T20:51:26.545252Z","bundle_sha256":"e954482816c84e36cb0a6c11eb0e441ce65ccc946911600a2360b9a805ebc36f"}}