{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6ZZ7EHLBODY7IDEBGCJOO6NPLP","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":"91afec6e2bd316dca9863ae8d736023319b37f5b1564d382dffda71ef2f802aa","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-14T09:48:42Z","title_canon_sha256":"c261c82c927e9fe294739699c4d0989285217dbfc6f919123ff19ce6e3c7e9bb"},"schema_version":"1.0","source":{"id":"2112.07260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.07260","created_at":"2026-07-05T04:13:47Z"},{"alias_kind":"arxiv_version","alias_value":"2112.07260v1","created_at":"2026-07-05T04:13:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.07260","created_at":"2026-07-05T04:13:47Z"},{"alias_kind":"pith_short_12","alias_value":"6ZZ7EHLBODY7","created_at":"2026-07-05T04:13:47Z"},{"alias_kind":"pith_short_16","alias_value":"6ZZ7EHLBODY7IDEB","created_at":"2026-07-05T04:13:47Z"},{"alias_kind":"pith_short_8","alias_value":"6ZZ7EHLB","created_at":"2026-07-05T04:13:47Z"}],"graph_snapshots":[{"event_id":"sha256:b0ddf3c4ef3d0ddda5d5b984a771ee301ca9ab89211c4ad3e06b647321ec1711","target":"graph","created_at":"2026-07-05T04:13:47Z","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/2112.07260/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The nitrogen-vacancy colour centre in diamond is emerging as one of the most important solid-state quantum systems. It has applications to fields including high-precision sensing, quantum computing, single photon communication, metrology, nanoscale magnetic imaging and biosensing. For all of these applications, a high quantum yield of emitted photons is desirable. However, diamond samples engineered to have high densities of nitrogen-vacancy centres show levels of brightness varying significantly within single batches, or even within the same sample. Here we show that nearby nitrogen impuritie","authors_text":"Alastair Stacey, Andrew D. Greentree, Brant C. Gibson, Brett Johnson, David A. Simpson, Hiroshi Abe, Jan Jeske, Lukas Lindner, Marco Capelli, Philipp Reineck, Shinobu Onoda, Takeshi Ohshima, Tingpeng Luo","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-14T09:48:42Z","title":"Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.07260","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:d6e6eb2d1ffa6e1d75168925c670e7f7e8edf149ff23fced34550c247b7ffa8e","target":"record","created_at":"2026-07-05T04:13:47Z","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":"91afec6e2bd316dca9863ae8d736023319b37f5b1564d382dffda71ef2f802aa","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-14T09:48:42Z","title_canon_sha256":"c261c82c927e9fe294739699c4d0989285217dbfc6f919123ff19ce6e3c7e9bb"},"schema_version":"1.0","source":{"id":"2112.07260","kind":"arxiv","version":1}},"canonical_sha256":"f673f21d6170f1f40c813092e779af5bc3ebfb0e129b0080ebfb3cf6086cd215","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f673f21d6170f1f40c813092e779af5bc3ebfb0e129b0080ebfb3cf6086cd215","first_computed_at":"2026-07-05T04:13:47.965183Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:13:47.965183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x42Kd2HuMwNOV7xYYBIkfdN0cvWAJ4sQHC93Apx+zkop8Q8lhg9GX7VPNOvRWDpyGgSd0S6qwcR8QS4bWkqcBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:13:47.965677Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.07260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6e6eb2d1ffa6e1d75168925c670e7f7e8edf149ff23fced34550c247b7ffa8e","sha256:b0ddf3c4ef3d0ddda5d5b984a771ee301ca9ab89211c4ad3e06b647321ec1711"],"state_sha256":"3b492926dc02a94702f3247ddf90a878144af0f9df2f81b41b4dddd21a66e0f7"}