{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:P76LFQZFTO7SK2M4UJ65OQNAPW","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":"65a2bcc2b2c1f1142b52dd976f081b2d13c607a65913a79f2e8e554833ddaad2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-08T08:06:30Z","title_canon_sha256":"6a4cd94edd19ff89c1e49c5f9462779ea70025ca680097c8f49521a52287e645"},"schema_version":"1.0","source":{"id":"2607.07124","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.07124","created_at":"2026-07-09T01:20:15Z"},{"alias_kind":"arxiv_version","alias_value":"2607.07124v1","created_at":"2026-07-09T01:20:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.07124","created_at":"2026-07-09T01:20:15Z"},{"alias_kind":"pith_short_12","alias_value":"P76LFQZFTO7S","created_at":"2026-07-09T01:20:15Z"},{"alias_kind":"pith_short_16","alias_value":"P76LFQZFTO7SK2M4","created_at":"2026-07-09T01:20:15Z"},{"alias_kind":"pith_short_8","alias_value":"P76LFQZF","created_at":"2026-07-09T01:20:15Z"}],"graph_snapshots":[{"event_id":"sha256:95710babf75d2b02be5dca3edcebfaad4f18c032cd30e23d58ce0631599385d2","target":"graph","created_at":"2026-07-09T01:20:15Z","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/2607.07124/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a method to create a room-temperature maser operating at approximately 2.9~GHz frequency using an ensemble of negatively charged nitrogen-vacancy electronic spins (NV) in diamond, without requiring population inversion. Our method considers a DC magnetic field of a few milli-Tesla (mT) applied along the perpendicular direction of an ensemble of NV spins aligned along a common axis. This perpendicular magnetic-field creates superposition states of $|m_{\\mathrm{s}}=-1\\rangle$ and $|m_{\\mathrm{s}}=+1\\rangle$ of the NV spin's ground state triplet levels and thereby makes it possible to ","authors_text":"Ali Fawaz, Sarath Raman Nair","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-08T08:06:30Z","title":"Room-temperature inversionless diamond nitrogen-vacancy electronic spin maser"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.07124","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:e28aa9d54010dabf3e47d421e347e8b7a0344e022d4ede88935fdecb59fcfa80","target":"record","created_at":"2026-07-09T01:20:15Z","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":"65a2bcc2b2c1f1142b52dd976f081b2d13c607a65913a79f2e8e554833ddaad2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-08T08:06:30Z","title_canon_sha256":"6a4cd94edd19ff89c1e49c5f9462779ea70025ca680097c8f49521a52287e645"},"schema_version":"1.0","source":{"id":"2607.07124","kind":"arxiv","version":1}},"canonical_sha256":"7ffcb2c3259bbf25699ca27dd741a07d970da594b36a7dae0df1c85c5da03039","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ffcb2c3259bbf25699ca27dd741a07d970da594b36a7dae0df1c85c5da03039","first_computed_at":"2026-07-09T01:20:15.222479Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T01:20:15.222479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E0TLY7k1mRnkTmV/U9Rd/5UZqbwlRw7fioicggySVzd5eyqWjJcJC5ArfV2QAnCAmLOgLdwuzffW1RyHqewvBQ==","signature_status":"signed_v1","signed_at":"2026-07-09T01:20:15.222868Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.07124","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e28aa9d54010dabf3e47d421e347e8b7a0344e022d4ede88935fdecb59fcfa80","sha256:95710babf75d2b02be5dca3edcebfaad4f18c032cd30e23d58ce0631599385d2"],"state_sha256":"aa22fc91a8423429761ab478a77470372eb1880b687b39e0f37963edb08f2837"}