{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:FDNIPMAPS5RXGNJZ6YOSJR55ZU","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":"5934566360e7abc2239202a74799200de2b3992b52b8f1c9613d9c99f90fbeca","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-12-26T01:45:13Z","title_canon_sha256":"e45acda676e93803af49f8dadb09fff982b3dcaae31709dd2ed167aad899133d"},"schema_version":"1.0","source":{"id":"2212.12980","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.12980","created_at":"2026-07-05T06:19:17Z"},{"alias_kind":"arxiv_version","alias_value":"2212.12980v2","created_at":"2026-07-05T06:19:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.12980","created_at":"2026-07-05T06:19:17Z"},{"alias_kind":"pith_short_12","alias_value":"FDNIPMAPS5RX","created_at":"2026-07-05T06:19:17Z"},{"alias_kind":"pith_short_16","alias_value":"FDNIPMAPS5RXGNJZ","created_at":"2026-07-05T06:19:17Z"},{"alias_kind":"pith_short_8","alias_value":"FDNIPMAP","created_at":"2026-07-05T06:19:17Z"}],"graph_snapshots":[{"event_id":"sha256:4e4953676a9cd97fa727adfb7bb40762e1af7829cd08861b45b4c4b49cbeb3b9","target":"graph","created_at":"2026-07-05T06:19:17Z","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/2212.12980/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Integrated photonics provides a promising platform for quantum key distribution (QKD) system in terms of miniaturization, robustness and scalability. Tremendous QKD works based on integrated photonics have been reported. Nonetheless, most current chip-based QKD implementations require additional off-chip hardware to demodulate quantum states or perform auxiliary tasks such as time synchronization and polarization basis tracking. Here, we report a demonstration of resource-efficient chip-based BB84 QKD with a silicon-based encoder and decoder. In our scheme, the time synchronization and polariz","authors_text":"Chunfeng Huang, Kejin Wei, Xiao Hu, Xin Hua, Xi Xiao, Ye Chen, Yongqiang Du, Zhengeng Zhao","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-12-26T01:45:13Z","title":"Resource-efficient quantum key distribution with integrated silicon photonics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.12980","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":"sha256:71306f2a611b138565e6bfb961f9fc9a27e8e5b3970806157cfee3757ef6631f","target":"record","created_at":"2026-07-05T06:19:17Z","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":"5934566360e7abc2239202a74799200de2b3992b52b8f1c9613d9c99f90fbeca","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-12-26T01:45:13Z","title_canon_sha256":"e45acda676e93803af49f8dadb09fff982b3dcaae31709dd2ed167aad899133d"},"schema_version":"1.0","source":{"id":"2212.12980","kind":"arxiv","version":2}},"canonical_sha256":"28da87b00f9763733539f61d24c7bdcd221827c4b6e34a769233ff999c906aee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28da87b00f9763733539f61d24c7bdcd221827c4b6e34a769233ff999c906aee","first_computed_at":"2026-07-05T06:19:17.548578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:19:17.548578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yuuz6YWdQ9Qla24Fklc5qpNlVLXXkvYPEimAlw56QrMsuVxmJoiMLClkK7lcG7QkActhEVRfD4kdj0qWgb6cBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:19:17.549073Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.12980","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71306f2a611b138565e6bfb961f9fc9a27e8e5b3970806157cfee3757ef6631f","sha256:4e4953676a9cd97fa727adfb7bb40762e1af7829cd08861b45b4c4b49cbeb3b9"],"state_sha256":"a23b8e7659524f3d38be32369a4d52282048ca9923788c8b5eb091068ae8759c"}