{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:RTE7C2TOJK5PTIZK2P2JGK6FVB","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":"f28fbd89c90fb34ad2b1c1e2d4b9402df498e5aa19c229c00dda6d77021a68b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-29T08:58:03Z","title_canon_sha256":"c999ab8a59b352b2e4e81551223ce39aeab5a0508f1ac6f504966230e8fc505b"},"schema_version":"1.0","source":{"id":"2309.17066","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.17066","created_at":"2026-07-05T10:05:40Z"},{"alias_kind":"arxiv_version","alias_value":"2309.17066v2","created_at":"2026-07-05T10:05:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.17066","created_at":"2026-07-05T10:05:40Z"},{"alias_kind":"pith_short_12","alias_value":"RTE7C2TOJK5P","created_at":"2026-07-05T10:05:40Z"},{"alias_kind":"pith_short_16","alias_value":"RTE7C2TOJK5PTIZK","created_at":"2026-07-05T10:05:40Z"},{"alias_kind":"pith_short_8","alias_value":"RTE7C2TO","created_at":"2026-07-05T10:05:40Z"}],"graph_snapshots":[{"event_id":"sha256:eccc55ff0ec39ea5c18e186254c696adee09ee0fc09e1b2b9be31648eea1ce2c","target":"graph","created_at":"2026-07-05T10:05:40Z","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/2309.17066/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The development of quantum repeaters poses significant challenges in terms of cost and maintenance, prompting the exploration of alternative approaches for achieving long-distance quantum communication. In the absence of quantum repeaters and under the memoryless (iid) approximation, it has been established that some fundamental quantum communication tasks are impossible if the transmissivity of an optical fibre falls below a known critical value, resulting in a severe constraint on the achievable distance for quantum communication. However, if the memoryless assumption does not hold -- e.g. w","authors_text":"Francesco Anna Mele, Giacomo De Palma, Ludovico Lami, Marco Fanizza, Vittorio Giovannetti","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-29T08:58:03Z","title":"Optical fibres with memory effects and their quantum communication capacities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.17066","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:a4f0eb2591bf311a68fc3e0594c23c8075fa92f7868af586242e1a73d7631411","target":"record","created_at":"2026-07-05T10:05:40Z","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":"f28fbd89c90fb34ad2b1c1e2d4b9402df498e5aa19c229c00dda6d77021a68b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-29T08:58:03Z","title_canon_sha256":"c999ab8a59b352b2e4e81551223ce39aeab5a0508f1ac6f504966230e8fc505b"},"schema_version":"1.0","source":{"id":"2309.17066","kind":"arxiv","version":2}},"canonical_sha256":"8cc9f16a6e4abaf9a32ad3f4932bc5a846a46a3caa49b8c5fae649bea22b5e28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cc9f16a6e4abaf9a32ad3f4932bc5a846a46a3caa49b8c5fae649bea22b5e28","first_computed_at":"2026-07-05T10:05:40.054820Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:05:40.054820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NfemKAH7cjVzUd5eFhljrZZkYtiTcZIJBb8gwGbvE7Z41TMQCx1G+hjIxnlHNIVlKjg0mJeT1UclDTgHeUaCBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:05:40.055338Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.17066","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a4f0eb2591bf311a68fc3e0594c23c8075fa92f7868af586242e1a73d7631411","sha256:eccc55ff0ec39ea5c18e186254c696adee09ee0fc09e1b2b9be31648eea1ce2c"],"state_sha256":"e2cd8975a4375fbb8964b309bd3564fe51480516446b31e1619d5fb1636e2c3d"}