{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:6JNQ5CUODKRARNO2J6F3X5TMHA","short_pith_number":"pith:6JNQ5CUO","canonical_record":{"source":{"id":"1304.0948","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-03T13:25:11Z","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"title_canon_sha256":"42fbd0e5b4295d0ee6016e8767a5dbed69b4ed4746605250cec647b42754e80f","abstract_canon_sha256":"0b419c605401a0c1b1eb61a8e950683bf43c19a237219670fbe440775ebe3a82"},"schema_version":"1.0"},"canonical_sha256":"f25b0e8a8e1aa208b5da4f8bbbf66c382b7c991dac62a0d92bb22cbaec0bf0ad","source":{"kind":"arxiv","id":"1304.0948","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.0948","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"1304.0948v2","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.0948","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"6JNQ5CUODKRA","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6JNQ5CUODKRARNO2","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6JNQ5CUO","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:6JNQ5CUODKRARNO2J6F3X5TMHA","target":"record","payload":{"canonical_record":{"source":{"id":"1304.0948","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-03T13:25:11Z","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"title_canon_sha256":"42fbd0e5b4295d0ee6016e8767a5dbed69b4ed4746605250cec647b42754e80f","abstract_canon_sha256":"0b419c605401a0c1b1eb61a8e950683bf43c19a237219670fbe440775ebe3a82"},"schema_version":"1.0"},"canonical_sha256":"f25b0e8a8e1aa208b5da4f8bbbf66c382b7c991dac62a0d92bb22cbaec0bf0ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:20.889462Z","signature_b64":"YKsaVs2ua/jGkVeHsZ/DciBLWA/pWZLL0JrF1ZRZiBam7Y8b9ktcvMNFMGYjPyi3H/VXQYLKgbEELhwhHYOKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f25b0e8a8e1aa208b5da4f8bbbf66c382b7c991dac62a0d92bb22cbaec0bf0ad","last_reissued_at":"2026-05-18T03:07:20.889021Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:20.889021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.0948","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":"2026-05-18T03:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a89mxX9IdZZ1Mx018of5TTTALHxzOXqm9hSZyWfGbnzxI7h3VJAozruOwLMJk9IRkDR0zQNAPd6Cb9WqIyWcDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:48:50.660287Z"},"content_sha256":"2b57f3799e2a6d49fd12a4282180d310e682a378a2010feafa2b0dfa39bbf675","schema_version":"1.0","event_id":"sha256:2b57f3799e2a6d49fd12a4282180d310e682a378a2010feafa2b0dfa39bbf675"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:6JNQ5CUODKRARNO2J6F3X5TMHA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scaling laws of the cavity enhancement for nitrogen-vacancy centers in diamond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.optics"],"primary_cat":"quant-ph","authors_text":"Christian Deutsch, David Hunger, Hanno Kaupp, Huan-Cheng Chang, Jakob Reichel, Theodor W. H\\\"ansch","submitted_at":"2013-04-03T13:25:11Z","abstract_excerpt":"We employ a fiber-based optical microcavity with high finesse to study the enhancement of phonon sideband fluorescence of nitrogen-vacancy centers in nanodiamonds. Harnessing the full tunability and open access of the resonator, we explicitly demonstrate the scaling laws of the Purcell enhancement by varying both the mode volume and the quality factor over a large range. While changes in the emission lifetime remain small in the regime of a broadband emitter, we observe an increase of the emission spectral density by up to a factor of 300. This gives a direct measure of the Purcell factor that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.0948","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":"2026-05-18T03:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/sb9GtQ9zrxPgwlkhnk7uCvKRv+aU48YP/bRbu3WvE8tcF+ChJt5S4+Rm9JX0W6TCL7RZ3glEptPfjFWqDcqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:48:50.660647Z"},"content_sha256":"dee2ed5aa31e2004962d89a0a7e4c9e187402be0147294b04a96dbdfb97bdd51","schema_version":"1.0","event_id":"sha256:dee2ed5aa31e2004962d89a0a7e4c9e187402be0147294b04a96dbdfb97bdd51"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/bundle.json","state_url":"https://pith.science/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/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":"2026-06-01T13:48:50Z","links":{"resolver":"https://pith.science/pith/6JNQ5CUODKRARNO2J6F3X5TMHA","bundle":"https://pith.science/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/bundle.json","state":"https://pith.science/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6JNQ5CUODKRARNO2J6F3X5TMHA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6JNQ5CUODKRARNO2J6F3X5TMHA","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":"0b419c605401a0c1b1eb61a8e950683bf43c19a237219670fbe440775ebe3a82","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-03T13:25:11Z","title_canon_sha256":"42fbd0e5b4295d0ee6016e8767a5dbed69b4ed4746605250cec647b42754e80f"},"schema_version":"1.0","source":{"id":"1304.0948","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.0948","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"1304.0948v2","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.0948","created_at":"2026-05-18T03:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"6JNQ5CUODKRA","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6JNQ5CUODKRARNO2","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6JNQ5CUO","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:dee2ed5aa31e2004962d89a0a7e4c9e187402be0147294b04a96dbdfb97bdd51","target":"graph","created_at":"2026-05-18T03:07:20Z","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":"We employ a fiber-based optical microcavity with high finesse to study the enhancement of phonon sideband fluorescence of nitrogen-vacancy centers in nanodiamonds. Harnessing the full tunability and open access of the resonator, we explicitly demonstrate the scaling laws of the Purcell enhancement by varying both the mode volume and the quality factor over a large range. While changes in the emission lifetime remain small in the regime of a broadband emitter, we observe an increase of the emission spectral density by up to a factor of 300. This gives a direct measure of the Purcell factor that","authors_text":"Christian Deutsch, David Hunger, Hanno Kaupp, Huan-Cheng Chang, Jakob Reichel, Theodor W. H\\\"ansch","cross_cats":["cond-mat.mes-hall","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-03T13:25:11Z","title":"Scaling laws of the cavity enhancement for nitrogen-vacancy centers in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.0948","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":"sha256:2b57f3799e2a6d49fd12a4282180d310e682a378a2010feafa2b0dfa39bbf675","target":"record","created_at":"2026-05-18T03:07:20Z","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":"0b419c605401a0c1b1eb61a8e950683bf43c19a237219670fbe440775ebe3a82","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-03T13:25:11Z","title_canon_sha256":"42fbd0e5b4295d0ee6016e8767a5dbed69b4ed4746605250cec647b42754e80f"},"schema_version":"1.0","source":{"id":"1304.0948","kind":"arxiv","version":2}},"canonical_sha256":"f25b0e8a8e1aa208b5da4f8bbbf66c382b7c991dac62a0d92bb22cbaec0bf0ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f25b0e8a8e1aa208b5da4f8bbbf66c382b7c991dac62a0d92bb22cbaec0bf0ad","first_computed_at":"2026-05-18T03:07:20.889021Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:07:20.889021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YKsaVs2ua/jGkVeHsZ/DciBLWA/pWZLL0JrF1ZRZiBam7Y8b9ktcvMNFMGYjPyi3H/VXQYLKgbEELhwhHYOKCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:07:20.889462Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.0948","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b57f3799e2a6d49fd12a4282180d310e682a378a2010feafa2b0dfa39bbf675","sha256:dee2ed5aa31e2004962d89a0a7e4c9e187402be0147294b04a96dbdfb97bdd51"],"state_sha256":"cf277fe4c3c52d0c5aee9fe83b88446d54387faba8686a0a3e8c13130df87d89"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2/wIyDeJuSQful5p6l2nXYouqTioWLdfv7q0C9PDxXvY7d3mB3+2q/qcOBv5TFOcQqU4bmmK9wczCCLsX3bPAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T13:48:50.662609Z","bundle_sha256":"fc80f6cc387b64c046b0c3fdaeefc89992cdb1c99dd6652856826a6ea7b098f8"}}