{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:CYJ7TF3OLC6PSOEKTJVH6SXFOO","short_pith_number":"pith:CYJ7TF3O","canonical_record":{"source":{"id":"1406.0041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-05-31T01:55:43Z","cross_cats_sorted":[],"title_canon_sha256":"5054deb8ea44dfcbea0bea61d3078e683d4955b475d85edf503c292759e823b9","abstract_canon_sha256":"cabca44fa094d0a8c79f1a3cf5296e121e03f9f937a06aa5374054efe9207f7a"},"schema_version":"1.0"},"canonical_sha256":"1613f9976e58bcf9388a9a6a7f4ae573b105fb485c9d620da3aebf8a459b5ca0","source":{"kind":"arxiv","id":"1406.0041","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0041","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0041v2","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0041","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"pith_short_12","alias_value":"CYJ7TF3OLC6P","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CYJ7TF3OLC6PSOEK","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CYJ7TF3O","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:CYJ7TF3OLC6PSOEKTJVH6SXFOO","target":"record","payload":{"canonical_record":{"source":{"id":"1406.0041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-05-31T01:55:43Z","cross_cats_sorted":[],"title_canon_sha256":"5054deb8ea44dfcbea0bea61d3078e683d4955b475d85edf503c292759e823b9","abstract_canon_sha256":"cabca44fa094d0a8c79f1a3cf5296e121e03f9f937a06aa5374054efe9207f7a"},"schema_version":"1.0"},"canonical_sha256":"1613f9976e58bcf9388a9a6a7f4ae573b105fb485c9d620da3aebf8a459b5ca0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:04.395857Z","signature_b64":"jfvCfABXkhr6wkHjf1ykQFhjf4xy45epQGX7T4EJZaeNhD+UZRh01eeAeQZkR4H6gUI2gn0ZExLR6RPhdBVnBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1613f9976e58bcf9388a9a6a7f4ae573b105fb485c9d620da3aebf8a459b5ca0","last_reissued_at":"2026-05-18T01:43:04.395520Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:04.395520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.0041","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:43:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qrJUbn21FJqISnh58LbtsZJ5HjInTr5i7PW2ehgAJpLL/kQ+wTXAzq5rvzFB3B2kJ+vrnaATV13O3TZbIKScAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T15:45:14.753801Z"},"content_sha256":"00037e258bba7c64f24a9d6dca54b5601701fbdec348e014e4b0a4e32ae316e6","schema_version":"1.0","event_id":"sha256:00037e258bba7c64f24a9d6dca54b5601701fbdec348e014e4b0a4e32ae316e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:CYJ7TF3OLC6PSOEKTJVH6SXFOO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Alignment of the Diamond Nitrogen Vacancy Center by Strain Engineering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"Kai-Mei Fu, Scott Dunham, Todd Karin","submitted_at":"2014-05-31T01:55:43Z","abstract_excerpt":"The nitrogen vacancy (NV) center in diamond is a sensitive probe of magnetic field and a promising qubit candidate for quantum information processing. The performance of many NV-based devices improves by aligning the NV(s) parallel to a single crystallographic direction. Using ab initio theoretical techniques, we show that NV orientation can be controlled by high-temperature annealing in the presence of strain under currently accessible experimental conditions. We find that $(89\\pm7)\\%$ of NVs align along the [111] crystallographic direction under 2\\% compressive biaxial strain (perpendicular "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0041","kind":"arxiv","version":2},"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":"2026-05-18T01:43:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n8g/m8YOMNR8hipgSjaKdn6owlItpkwTpqEAUIhDDjZiN6VPiUp2jZs+1OeB8CND+zyCF4nvV/dglEUxl8xFAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T15:45:14.754720Z"},"content_sha256":"7278d80a56a202ca9072bd17c75af370956ff57e614de64b38a19e0be68aa475","schema_version":"1.0","event_id":"sha256:7278d80a56a202ca9072bd17c75af370956ff57e614de64b38a19e0be68aa475"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/bundle.json","state_url":"https://pith.science/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/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":"2026-08-21T15:45:14Z","links":{"resolver":"https://pith.science/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO","bundle":"https://pith.science/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/bundle.json","state":"https://pith.science/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CYJ7TF3OLC6PSOEKTJVH6SXFOO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CYJ7TF3OLC6PSOEKTJVH6SXFOO","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":"cabca44fa094d0a8c79f1a3cf5296e121e03f9f937a06aa5374054efe9207f7a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-05-31T01:55:43Z","title_canon_sha256":"5054deb8ea44dfcbea0bea61d3078e683d4955b475d85edf503c292759e823b9"},"schema_version":"1.0","source":{"id":"1406.0041","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0041","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0041v2","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0041","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"pith_short_12","alias_value":"CYJ7TF3OLC6P","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CYJ7TF3OLC6PSOEK","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CYJ7TF3O","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:7278d80a56a202ca9072bd17c75af370956ff57e614de64b38a19e0be68aa475","target":"graph","created_at":"2026-05-18T01:43:04Z","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":"The nitrogen vacancy (NV) center in diamond is a sensitive probe of magnetic field and a promising qubit candidate for quantum information processing. The performance of many NV-based devices improves by aligning the NV(s) parallel to a single crystallographic direction. Using ab initio theoretical techniques, we show that NV orientation can be controlled by high-temperature annealing in the presence of strain under currently accessible experimental conditions. We find that $(89\\pm7)\\%$ of NVs align along the [111] crystallographic direction under 2\\% compressive biaxial strain (perpendicular ","authors_text":"Kai-Mei Fu, Scott Dunham, Todd Karin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-05-31T01:55:43Z","title":"Alignment of the Diamond Nitrogen Vacancy Center by Strain Engineering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0041","kind":"arxiv","version":2},"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":"sha256:00037e258bba7c64f24a9d6dca54b5601701fbdec348e014e4b0a4e32ae316e6","target":"record","created_at":"2026-05-18T01:43:04Z","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":"cabca44fa094d0a8c79f1a3cf5296e121e03f9f937a06aa5374054efe9207f7a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2014-05-31T01:55:43Z","title_canon_sha256":"5054deb8ea44dfcbea0bea61d3078e683d4955b475d85edf503c292759e823b9"},"schema_version":"1.0","source":{"id":"1406.0041","kind":"arxiv","version":2}},"canonical_sha256":"1613f9976e58bcf9388a9a6a7f4ae573b105fb485c9d620da3aebf8a459b5ca0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1613f9976e58bcf9388a9a6a7f4ae573b105fb485c9d620da3aebf8a459b5ca0","first_computed_at":"2026-05-18T01:43:04.395520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:04.395520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jfvCfABXkhr6wkHjf1ykQFhjf4xy45epQGX7T4EJZaeNhD+UZRh01eeAeQZkR4H6gUI2gn0ZExLR6RPhdBVnBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:04.395857Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.0041","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00037e258bba7c64f24a9d6dca54b5601701fbdec348e014e4b0a4e32ae316e6","sha256:7278d80a56a202ca9072bd17c75af370956ff57e614de64b38a19e0be68aa475"],"state_sha256":"752a85535e2540217a1fd85c413047101271cc8d91e986bb16a2d8bcc47ba8d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+NK1/D9SQBh0KgzAxlV3AC6Tm6YZj9MEBBYjGDrkCVMLVSRJc5LWRr3qQWYIchFUW2wx25W9BBOItTS5rVDjDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T15:45:14.761224Z","bundle_sha256":"a08c7bed87c8ed2bef1c2b27c8d97b569e2f10141958f8e46f6ae029febe1bda"}}