{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2DUGA4KMNVKXPB66GBQOYGOVPN","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":"bf1bb2eb2adb4c1e45b7ddff4574e34fb3c2a4f3599d6cad8dd9ad621d53e172","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-06-06T16:58:00Z","title_canon_sha256":"0b73620e7f49f201f8fe3d2292b70e13d49ccd76d6d65e6fa728ca6f63ee25f8"},"schema_version":"1.0","source":{"id":"1606.01826","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01826","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01826v2","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01826","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"pith_short_12","alias_value":"2DUGA4KMNVKX","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2DUGA4KMNVKXPB66","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2DUGA4KM","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:73fec97653e72cb12acd5e78872b7e900333bb1092ec90addc896f6419d7ec2b","target":"graph","created_at":"2026-05-18T01:10:02Z","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":"Scaling beyond two-node quantum networks using nitrogen vacancy (NV) centers in diamond is limited by the low probability of collecting zero phonon line (ZPL) photons from single centers. Here, we demonstrate GaP-on-diamond disk resonators which resonantly couple ZPL photons from single NV centers to single-mode waveguides. In these devices, the probability of a single NV center emitting a ZPL photon into the guided waveguide mode after optical excitation can reach 9%, due to a combination of resonant enhancement of the ZPL emission and efficient coupling between the resonator and waveguide. W","authors_text":"Emma R. Schmidgall, Fariba Hatami, Kai-Mei C. Fu, Michael Gould, Shabnam Dadgostar","cross_cats":["physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-06-06T16:58:00Z","title":"Efficient extraction of zero-phonon-line photons from single nitrogen-vacancy centers in an integrated GaP-on-diamond platform"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01826","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":"sha256:16b98806831bb25639b2b0ab95bbd9937d21c0338d0d8bfe005bd0f15c041fe8","target":"record","created_at":"2026-05-18T01:10:02Z","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":"bf1bb2eb2adb4c1e45b7ddff4574e34fb3c2a4f3599d6cad8dd9ad621d53e172","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-06-06T16:58:00Z","title_canon_sha256":"0b73620e7f49f201f8fe3d2292b70e13d49ccd76d6d65e6fa728ca6f63ee25f8"},"schema_version":"1.0","source":{"id":"1606.01826","kind":"arxiv","version":2}},"canonical_sha256":"d0e860714c6d557787de3060ec19d57b7f5b9c019577e331b8a87b9e9a111062","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0e860714c6d557787de3060ec19d57b7f5b9c019577e331b8a87b9e9a111062","first_computed_at":"2026-05-18T01:10:02.582205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:02.582205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CT1aZ3vU8gb6IpAbr+TVatGLh3vGU0QGduhrafBk0bV5bMb2aA5iNDGHp6AcBtu606eaigXQ6jfxJI76Dj7VCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:02.582711Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.01826","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16b98806831bb25639b2b0ab95bbd9937d21c0338d0d8bfe005bd0f15c041fe8","sha256:73fec97653e72cb12acd5e78872b7e900333bb1092ec90addc896f6419d7ec2b"],"state_sha256":"2e6707fdc7848f43fa8828035ce3ddecf19f13ea6916d533dc251e631a04075e"}