{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:YSQXZVBNITBOH6HQIUYBQDP5IP","short_pith_number":"pith:YSQXZVBN","canonical_record":{"source":{"id":"2309.16785","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-28T18:22:56Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"081ce53a8bd013b9950599031deffb0227406632ad3dd489768916fb1908c4c9","abstract_canon_sha256":"6411bcaa5e892c05a4661c466c63a6eda9873becba0ce07e7dcb3636b6d43fe8"},"schema_version":"1.0"},"canonical_sha256":"c4a17cd42d44c2e3f8f04530180dfd43edc29c543fec2e5ce13f383870379764","source":{"kind":"arxiv","id":"2309.16785","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.16785","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"arxiv_version","alias_value":"2309.16785v1","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.16785","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_12","alias_value":"YSQXZVBNITBO","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_16","alias_value":"YSQXZVBNITBOH6HQ","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_8","alias_value":"YSQXZVBN","created_at":"2026-07-05T09:38:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:YSQXZVBNITBOH6HQIUYBQDP5IP","target":"record","payload":{"canonical_record":{"source":{"id":"2309.16785","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-28T18:22:56Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"081ce53a8bd013b9950599031deffb0227406632ad3dd489768916fb1908c4c9","abstract_canon_sha256":"6411bcaa5e892c05a4661c466c63a6eda9873becba0ce07e7dcb3636b6d43fe8"},"schema_version":"1.0"},"canonical_sha256":"c4a17cd42d44c2e3f8f04530180dfd43edc29c543fec2e5ce13f383870379764","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:38:14.441193Z","signature_b64":"N0v7TZWoKfEJ8+mrf0KQBlmbX7lKrJYyjRWIyE1iEXl6Vz7c8r/Kg5ou7NyQJRibUwetrXHSUn5DpuhR+JmBBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4a17cd42d44c2e3f8f04530180dfd43edc29c543fec2e5ce13f383870379764","last_reissued_at":"2026-07-05T09:38:14.440712Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:38:14.440712Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.16785","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:38:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7ziTiMalWCmCapC73Djb7eGz36NubaaVeyO8H/X//S8MvQNCD1+Ntab9fwGYO5ddYUvFVnLMni6qqYqvk3hJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:17:45.374381Z"},"content_sha256":"bd218770a82bd33cfe842e302bd03b2909f3e919555da1df8e049ed9f7d1c86d","schema_version":"1.0","event_id":"sha256:bd218770a82bd33cfe842e302bd03b2909f3e919555da1df8e049ed9f7d1c86d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:YSQXZVBNITBOH6HQIUYBQDP5IP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical and spin coherence of Er$^{3+}$ in epitaxial CeO$_2$ on silicon","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Alan M. Dibos, David D. Awschalom, F. Joseph Heremans, Gregory D. Grant, Ignas Masiulionis, Jasleen K. Bindra, Jens Niklas, Jiefei Zhang, Michael T. Solomon, Oleg G. Poluektov, Supratik Guha","submitted_at":"2023-09-28T18:22:56Z","abstract_excerpt":"Solid-state atomic defects with optical transitions in the telecommunication bands, potentially in a nuclear spin free environment, are important for applications in fiber-based quantum networks. Erbium ions doped in CeO$_2$ offer such a desired combination. Here we report on the optical homogeneous linewidth and electron spin coherence of Er$^{3+}$ ions doped in CeO$_2$ epitaxial film grown on a Si(111) substrate. The long-lived optical transition near 1530 nm in the environmentally-protected 4f shell of Er$^{3+}$ shows a narrow homogeneous linewidth of 440 kHz with an optical coherence time "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.16785","kind":"arxiv","version":1},"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/2309.16785/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":"2026-07-05T09:38:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"azSYBI39EjmpA5cvqcptmg52/WngkBi5vdIdJg4TMcLpDWcNphFg9+eeEfIpU8/9JRkNkFHVf/nQyaoeyfFFAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:17:45.375338Z"},"content_sha256":"0b7269911073c6703d33be4d9e3b00843f4aa33c01493ecd82e2f376d645421d","schema_version":"1.0","event_id":"sha256:0b7269911073c6703d33be4d9e3b00843f4aa33c01493ecd82e2f376d645421d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/bundle.json","state_url":"https://pith.science/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/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":"2026-08-04T11:17:45Z","links":{"resolver":"https://pith.science/pith/YSQXZVBNITBOH6HQIUYBQDP5IP","bundle":"https://pith.science/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/bundle.json","state":"https://pith.science/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YSQXZVBNITBOH6HQIUYBQDP5IP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:YSQXZVBNITBOH6HQIUYBQDP5IP","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":"6411bcaa5e892c05a4661c466c63a6eda9873becba0ce07e7dcb3636b6d43fe8","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-28T18:22:56Z","title_canon_sha256":"081ce53a8bd013b9950599031deffb0227406632ad3dd489768916fb1908c4c9"},"schema_version":"1.0","source":{"id":"2309.16785","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.16785","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"arxiv_version","alias_value":"2309.16785v1","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.16785","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_12","alias_value":"YSQXZVBNITBO","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_16","alias_value":"YSQXZVBNITBOH6HQ","created_at":"2026-07-05T09:38:14Z"},{"alias_kind":"pith_short_8","alias_value":"YSQXZVBN","created_at":"2026-07-05T09:38:14Z"}],"graph_snapshots":[{"event_id":"sha256:0b7269911073c6703d33be4d9e3b00843f4aa33c01493ecd82e2f376d645421d","target":"graph","created_at":"2026-07-05T09:38:14Z","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/2309.16785/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Solid-state atomic defects with optical transitions in the telecommunication bands, potentially in a nuclear spin free environment, are important for applications in fiber-based quantum networks. Erbium ions doped in CeO$_2$ offer such a desired combination. Here we report on the optical homogeneous linewidth and electron spin coherence of Er$^{3+}$ ions doped in CeO$_2$ epitaxial film grown on a Si(111) substrate. The long-lived optical transition near 1530 nm in the environmentally-protected 4f shell of Er$^{3+}$ shows a narrow homogeneous linewidth of 440 kHz with an optical coherence time ","authors_text":"Alan M. Dibos, David D. Awschalom, F. Joseph Heremans, Gregory D. Grant, Ignas Masiulionis, Jasleen K. Bindra, Jens Niklas, Jiefei Zhang, Michael T. Solomon, Oleg G. Poluektov, Supratik Guha","cross_cats":["physics.atom-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-28T18:22:56Z","title":"Optical and spin coherence of Er$^{3+}$ in epitaxial CeO$_2$ on silicon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.16785","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:bd218770a82bd33cfe842e302bd03b2909f3e919555da1df8e049ed9f7d1c86d","target":"record","created_at":"2026-07-05T09:38:14Z","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":"6411bcaa5e892c05a4661c466c63a6eda9873becba0ce07e7dcb3636b6d43fe8","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-28T18:22:56Z","title_canon_sha256":"081ce53a8bd013b9950599031deffb0227406632ad3dd489768916fb1908c4c9"},"schema_version":"1.0","source":{"id":"2309.16785","kind":"arxiv","version":1}},"canonical_sha256":"c4a17cd42d44c2e3f8f04530180dfd43edc29c543fec2e5ce13f383870379764","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4a17cd42d44c2e3f8f04530180dfd43edc29c543fec2e5ce13f383870379764","first_computed_at":"2026-07-05T09:38:14.440712Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:38:14.440712Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N0v7TZWoKfEJ8+mrf0KQBlmbX7lKrJYyjRWIyE1iEXl6Vz7c8r/Kg5ou7NyQJRibUwetrXHSUn5DpuhR+JmBBw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:38:14.441193Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.16785","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd218770a82bd33cfe842e302bd03b2909f3e919555da1df8e049ed9f7d1c86d","sha256:0b7269911073c6703d33be4d9e3b00843f4aa33c01493ecd82e2f376d645421d"],"state_sha256":"f3cc6f45d7d80f78f8ead112c2e13557c8f45a4343fe92dd9cc1c4370c5e7c9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sNg4Hp+mQK9qU7/r+GVvcgR/fy8C9LjhpYAxlx1dJJbtWw6rieKmWPrbmlolwQkzq1yCZlViwxRXSY/hdlUXAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T11:17:45.382224Z","bundle_sha256":"90ec02da1769d8f8edfecae6f6539f6c3c749eaf0d3856763e7f3ee08bc34523"}}