{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:WFDMN6OPXXO2ZGYQ22ECAXNSBW","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":"41c17a17350bfeb1abf36f33ab198f7407f23818d8c02f63fbbfd055699ec973","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-26T15:46:20Z","title_canon_sha256":"3cb43003a5291824441d357bcd45a9254ddcdf6b55da4444633c88b26e293380"},"schema_version":"1.0","source":{"id":"2204.12389","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.12389","created_at":"2026-07-05T05:02:42Z"},{"alias_kind":"arxiv_version","alias_value":"2204.12389v1","created_at":"2026-07-05T05:02:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.12389","created_at":"2026-07-05T05:02:42Z"},{"alias_kind":"pith_short_12","alias_value":"WFDMN6OPXXO2","created_at":"2026-07-05T05:02:42Z"},{"alias_kind":"pith_short_16","alias_value":"WFDMN6OPXXO2ZGYQ","created_at":"2026-07-05T05:02:42Z"},{"alias_kind":"pith_short_8","alias_value":"WFDMN6OP","created_at":"2026-07-05T05:02:42Z"}],"graph_snapshots":[{"event_id":"sha256:d5da1b3eaee90c1892e4b6a7bbb8e6c4c009ab3543ec2389abffefdbaffe879b","target":"graph","created_at":"2026-07-05T05:02:42Z","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/2204.12389/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Interfaced single-photon sources and quantum memories for photons together form a foundational component of quantum technology. Achieving compatibility between heterogeneous, state-of-the-art devices is a long-standing challenge. We built and successfully interfaced a heralded single-photon source based on cavity-enhanced spontaneous parametric down-conversion in ppKTP and a matched memory based on electromagnetically induced transparency in warm $^{87}$Rb vapor. The bandwidth of the photons emitted by the source is 370 MHz, placing its speed in the technologically relevant regime while remain","authors_text":"Bj\\\"orn Cotting, Gianni Buser, Janik Wolters, Philipp Treutlein, Roberto Mottola","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-26T15:46:20Z","title":"Single-Photon Storage in a Ground-State Vapor Cell Quantum Memory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.12389","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:add6f1eb4c5ad73837f81eea4e343aafe521cfe4e07fd01d1a3335d57b92b32b","target":"record","created_at":"2026-07-05T05:02:42Z","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":"41c17a17350bfeb1abf36f33ab198f7407f23818d8c02f63fbbfd055699ec973","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-26T15:46:20Z","title_canon_sha256":"3cb43003a5291824441d357bcd45a9254ddcdf6b55da4444633c88b26e293380"},"schema_version":"1.0","source":{"id":"2204.12389","kind":"arxiv","version":1}},"canonical_sha256":"b146c6f9cfbdddac9b10d688205db20dbc6ffad4239731b1aed124558d6fbb83","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b146c6f9cfbdddac9b10d688205db20dbc6ffad4239731b1aed124558d6fbb83","first_computed_at":"2026-07-05T05:02:42.090829Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:02:42.090829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HdG/2THH0X41LUvb9SO+F3VKJ4bgR/zYUwYyNUlJfE/Lqhxz55NZuKzd6IBAbw9Ac0hes3y2/Usdnu1fnv9MCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:02:42.091184Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.12389","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:add6f1eb4c5ad73837f81eea4e343aafe521cfe4e07fd01d1a3335d57b92b32b","sha256:d5da1b3eaee90c1892e4b6a7bbb8e6c4c009ab3543ec2389abffefdbaffe879b"],"state_sha256":"525b4db4fd058b553a6ad91695cfb11be6c70510c7a7320868a8759acce737ba"}