{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:DY2UJXPCI7GTFAE27SXAF3T775","short_pith_number":"pith:DY2UJXPC","canonical_record":{"source":{"id":"2202.10980","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-22T15:35:54Z","cross_cats_sorted":[],"title_canon_sha256":"f5cb13fe97615d9af3d05874fa3abd6513afd45214688dee7e8fcc21741ca96b","abstract_canon_sha256":"704294585307c7cc0ed8c8ed93fe77abaf656821c5a47c987cd2667adf38b30d"},"schema_version":"1.0"},"canonical_sha256":"1e3544dde247cd32809afcae02ee7fff52765b81aea8a400b09f46199d0fa33f","source":{"kind":"arxiv","id":"2202.10980","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.10980","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"arxiv_version","alias_value":"2202.10980v4","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.10980","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_12","alias_value":"DY2UJXPCI7GT","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_16","alias_value":"DY2UJXPCI7GTFAE2","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_8","alias_value":"DY2UJXPC","created_at":"2026-07-05T04:39:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:DY2UJXPCI7GTFAE27SXAF3T775","target":"record","payload":{"canonical_record":{"source":{"id":"2202.10980","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-22T15:35:54Z","cross_cats_sorted":[],"title_canon_sha256":"f5cb13fe97615d9af3d05874fa3abd6513afd45214688dee7e8fcc21741ca96b","abstract_canon_sha256":"704294585307c7cc0ed8c8ed93fe77abaf656821c5a47c987cd2667adf38b30d"},"schema_version":"1.0"},"canonical_sha256":"1e3544dde247cd32809afcae02ee7fff52765b81aea8a400b09f46199d0fa33f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:39:48.995844Z","signature_b64":"7AOFbxGdK6lBONxarHIpqwAybtIay1QwiBR8fc66k/jC0sAuAcGAyYoHxTedyeXa9KGCOPyWnWrn6j7f/U6kCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e3544dde247cd32809afcae02ee7fff52765b81aea8a400b09f46199d0fa33f","last_reissued_at":"2026-07-05T04:39:48.995415Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:39:48.995415Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.10980","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:39:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uG51sabdWc2+VYM25FP0CdTzcOY5YA2+Ywa7JlD7BnjxrP6VQDhiPQFSeAcSSqeMzpF2+yY9P+Neuyqn9/+/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:12:07.904232Z"},"content_sha256":"5993d4fd0c7f64f4e9dfbb1b206154b873c720d1cfadf4e401209b6b9486e0c1","schema_version":"1.0","event_id":"sha256:5993d4fd0c7f64f4e9dfbb1b206154b873c720d1cfadf4e401209b6b9486e0c1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:DY2UJXPCI7GTFAE27SXAF3T775","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unveiling the Zero-Phonon Line of the Boron Vacancy Center by Cavity Enhanced Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander W. Holleitner, Andreas V. Stier, Chenjiang Qian, Dominik B. Bucher, G. V. Astakhov, JonathanJ. Finley, Manfred Helm, Martin Schalk, Nathan P. Wilson, Pedro Soubelet, Roberto Rizzato, Stephan Mohr, Ulrich Kentsch, Viviana Villafa\\~ne","submitted_at":"2022-02-22T15:35:54Z","abstract_excerpt":"Negatively charged boron vacancies ($V_B^-$) in hexagonal boron nitride (hBN) exhibit a broad emission spectrum due to strong electron-phonon coupling and Jahn-Teller mixing of electronic states. As such, the direct measurement of zero-phonon line (ZPL) of $V_B^-$ has remained elusive. Here, we measure the room-temperature ZPL wavelength to be $773\\pm2$ nm by coupling the hBN layer to the high-Q nanobeam cavity. As the wavelength of cavity mode is tuned, we observe a pronounced intensity resonance, indicating the coupling to $V_B^-$. Our observations are consistent with the spatial redistribut"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.10980","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2202.10980/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:39:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n7OmsSXPgSLjbjo/8LO8D6pGei5rSIF/I3pb+0+6aKB/gldqRjtUfeA0+pyiB1y9ZwM7MoExzSmRn/JkSYU5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:12:07.904628Z"},"content_sha256":"d944158266e6db6cc7e04d8dd0d7084a2c8a9abdfc54f54ea759d8873784b413","schema_version":"1.0","event_id":"sha256:d944158266e6db6cc7e04d8dd0d7084a2c8a9abdfc54f54ea759d8873784b413"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DY2UJXPCI7GTFAE27SXAF3T775/bundle.json","state_url":"https://pith.science/pith/DY2UJXPCI7GTFAE27SXAF3T775/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DY2UJXPCI7GTFAE27SXAF3T775/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":"2026-07-07T04:12:07Z","links":{"resolver":"https://pith.science/pith/DY2UJXPCI7GTFAE27SXAF3T775","bundle":"https://pith.science/pith/DY2UJXPCI7GTFAE27SXAF3T775/bundle.json","state":"https://pith.science/pith/DY2UJXPCI7GTFAE27SXAF3T775/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DY2UJXPCI7GTFAE27SXAF3T775/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:DY2UJXPCI7GTFAE27SXAF3T775","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":"704294585307c7cc0ed8c8ed93fe77abaf656821c5a47c987cd2667adf38b30d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-22T15:35:54Z","title_canon_sha256":"f5cb13fe97615d9af3d05874fa3abd6513afd45214688dee7e8fcc21741ca96b"},"schema_version":"1.0","source":{"id":"2202.10980","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.10980","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"arxiv_version","alias_value":"2202.10980v4","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.10980","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_12","alias_value":"DY2UJXPCI7GT","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_16","alias_value":"DY2UJXPCI7GTFAE2","created_at":"2026-07-05T04:39:48Z"},{"alias_kind":"pith_short_8","alias_value":"DY2UJXPC","created_at":"2026-07-05T04:39:48Z"}],"graph_snapshots":[{"event_id":"sha256:d944158266e6db6cc7e04d8dd0d7084a2c8a9abdfc54f54ea759d8873784b413","target":"graph","created_at":"2026-07-05T04:39:48Z","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/2202.10980/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Negatively charged boron vacancies ($V_B^-$) in hexagonal boron nitride (hBN) exhibit a broad emission spectrum due to strong electron-phonon coupling and Jahn-Teller mixing of electronic states. As such, the direct measurement of zero-phonon line (ZPL) of $V_B^-$ has remained elusive. Here, we measure the room-temperature ZPL wavelength to be $773\\pm2$ nm by coupling the hBN layer to the high-Q nanobeam cavity. As the wavelength of cavity mode is tuned, we observe a pronounced intensity resonance, indicating the coupling to $V_B^-$. Our observations are consistent with the spatial redistribut","authors_text":"Alexander W. Holleitner, Andreas V. Stier, Chenjiang Qian, Dominik B. Bucher, G. V. Astakhov, JonathanJ. Finley, Manfred Helm, Martin Schalk, Nathan P. Wilson, Pedro Soubelet, Roberto Rizzato, Stephan Mohr, Ulrich Kentsch, Viviana Villafa\\~ne","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-22T15:35:54Z","title":"Unveiling the Zero-Phonon Line of the Boron Vacancy Center by Cavity Enhanced Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.10980","kind":"arxiv","version":4},"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":"sha256:5993d4fd0c7f64f4e9dfbb1b206154b873c720d1cfadf4e401209b6b9486e0c1","target":"record","created_at":"2026-07-05T04:39:48Z","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":"704294585307c7cc0ed8c8ed93fe77abaf656821c5a47c987cd2667adf38b30d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-22T15:35:54Z","title_canon_sha256":"f5cb13fe97615d9af3d05874fa3abd6513afd45214688dee7e8fcc21741ca96b"},"schema_version":"1.0","source":{"id":"2202.10980","kind":"arxiv","version":4}},"canonical_sha256":"1e3544dde247cd32809afcae02ee7fff52765b81aea8a400b09f46199d0fa33f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e3544dde247cd32809afcae02ee7fff52765b81aea8a400b09f46199d0fa33f","first_computed_at":"2026-07-05T04:39:48.995415Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:39:48.995415Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7AOFbxGdK6lBONxarHIpqwAybtIay1QwiBR8fc66k/jC0sAuAcGAyYoHxTedyeXa9KGCOPyWnWrn6j7f/U6kCw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:39:48.995844Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.10980","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5993d4fd0c7f64f4e9dfbb1b206154b873c720d1cfadf4e401209b6b9486e0c1","sha256:d944158266e6db6cc7e04d8dd0d7084a2c8a9abdfc54f54ea759d8873784b413"],"state_sha256":"38e82fa0eb5cf8ebcd116e68e9bee5654ed8df986dd81cbed5a54ec67e04690a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v9C9WnkY3xvPVddkjv43gN0kOQ4fiCWLJzA176S03a30EiyujrKkQnvpI3VJQp7xRZwJe1XT5xizuxgpXDoyAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:12:07.906606Z","bundle_sha256":"0cd69c1b8779c5cc2208c7765d9c791a73c1e37d90641f45b9de7985cce1334f"}}