{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:YMBPPKLCHQVDZD5T2SVMYVQDUV","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":"833a83f8958f80b84df4346c35228ec7d63ec08196ea8b218677defea31e3921","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-17T00:07:03Z","title_canon_sha256":"5c192a88033db70f9e887360bc7374b25351dcef586c5ea89041fe0fb472e069"},"schema_version":"1.0","source":{"id":"2206.08490","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.08490","created_at":"2026-07-05T05:27:48Z"},{"alias_kind":"arxiv_version","alias_value":"2206.08490v1","created_at":"2026-07-05T05:27:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.08490","created_at":"2026-07-05T05:27:48Z"},{"alias_kind":"pith_short_12","alias_value":"YMBPPKLCHQVD","created_at":"2026-07-05T05:27:48Z"},{"alias_kind":"pith_short_16","alias_value":"YMBPPKLCHQVDZD5T","created_at":"2026-07-05T05:27:48Z"},{"alias_kind":"pith_short_8","alias_value":"YMBPPKLC","created_at":"2026-07-05T05:27:48Z"}],"graph_snapshots":[{"event_id":"sha256:8ed00c921088129f3a403a596fd7a6f82df615e8d9b986604f0820c56cbaf3ab","target":"graph","created_at":"2026-07-05T05:27:48Z","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/2206.08490/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The coherent one-way (COW) quantum key distribution (QKD) is a highly practical quantum communication protocol that is currently deployed in off-the-shelves products. However, despite its simplicity and widespread use, the security of COW-QKD is still an open problem. This is largely due to its unique security feature based on inter-signal phase distribution, which makes it very difficult to analyze using standard security proof techniques. Here, to overcome this problem, we present a simple variant of COW-QKD and prove its security in the infinite-key limit. The proposed modifications only in","authors_text":"Charles C. -W. Lim, Emilien Lavie","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-17T00:07:03Z","title":"Improved coherent one-way quantum key distribution for high-loss channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.08490","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":"sha256:9b9f038a8bdfe8d669063ea67f457e2dce0a4ddaf4c1c2e62f11b070ad853fef","target":"record","created_at":"2026-07-05T05:27:48Z","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":"833a83f8958f80b84df4346c35228ec7d63ec08196ea8b218677defea31e3921","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-06-17T00:07:03Z","title_canon_sha256":"5c192a88033db70f9e887360bc7374b25351dcef586c5ea89041fe0fb472e069"},"schema_version":"1.0","source":{"id":"2206.08490","kind":"arxiv","version":1}},"canonical_sha256":"c302f7a9623c2a3c8fb3d4aacc5603a54ae77968d474c998e3c583d9b92ace6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c302f7a9623c2a3c8fb3d4aacc5603a54ae77968d474c998e3c583d9b92ace6b","first_computed_at":"2026-07-05T05:27:48.398403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:27:48.398403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vSwgNUiaGOiYbERBHXgQXKgdL698+X9fD6tkiT2DfcNNlkEMpu3BiMIQjzQ7Lal8M5jnOPN6p2ejmpyCMlhyCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:27:48.398886Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.08490","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b9f038a8bdfe8d669063ea67f457e2dce0a4ddaf4c1c2e62f11b070ad853fef","sha256:8ed00c921088129f3a403a596fd7a6f82df615e8d9b986604f0820c56cbaf3ab"],"state_sha256":"966d13d40d7453b542f7af6fc8fe3fbbebe3505ed8dba9fbb29bfbc157a9d322"}