{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ROB32QJ5M7HMTYRJCCTXJF5AM5","short_pith_number":"pith:ROB32QJ5","canonical_record":{"source":{"id":"2309.11448","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-20T16:26:01Z","cross_cats_sorted":[],"title_canon_sha256":"04beaa3f8ec76e6395b768ba9b8cc88123adf3147749c8746578aa454feba903","abstract_canon_sha256":"6bf2a168e0bdbafbf734144824cdcc96908492f43fbcf227da8dee7cec2586c0"},"schema_version":"1.0"},"canonical_sha256":"8b83bd413d67cec9e22910a77497a0677cb5c98f876a7e761fbf8db0d042f19d","source":{"kind":"arxiv","id":"2309.11448","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.11448","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"arxiv_version","alias_value":"2309.11448v1","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.11448","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_12","alias_value":"ROB32QJ5M7HM","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_16","alias_value":"ROB32QJ5M7HMTYRJ","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_8","alias_value":"ROB32QJ5","created_at":"2026-07-05T06:52:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ROB32QJ5M7HMTYRJCCTXJF5AM5","target":"record","payload":{"canonical_record":{"source":{"id":"2309.11448","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-20T16:26:01Z","cross_cats_sorted":[],"title_canon_sha256":"04beaa3f8ec76e6395b768ba9b8cc88123adf3147749c8746578aa454feba903","abstract_canon_sha256":"6bf2a168e0bdbafbf734144824cdcc96908492f43fbcf227da8dee7cec2586c0"},"schema_version":"1.0"},"canonical_sha256":"8b83bd413d67cec9e22910a77497a0677cb5c98f876a7e761fbf8db0d042f19d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:52:36.502495Z","signature_b64":"gpnAVPHGPTvszHhdA7cJxjtooIZz5cdvCP0rj2y5gY4bCUfVkYOPnhnSH4U5dAHZ8h80sWsR57dgYSS/zhYnBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b83bd413d67cec9e22910a77497a0677cb5c98f876a7e761fbf8db0d042f19d","last_reissued_at":"2026-07-05T06:52:36.502012Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:52:36.502012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.11448","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":"2026-07-05T06:52:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k14THzE7KcP47q6+YO4TeXlXu4gbZxLDNgFl5nyxQk4V3YqXvK88KNuxNuJiOdcshb2PBr3rt3fPhtMwlEBWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T08:24:01.835273Z"},"content_sha256":"70d0b4e4cdaf5430fabd9ade8139143ee69601c8a5bfbfd564c091da09373a2b","schema_version":"1.0","event_id":"sha256:70d0b4e4cdaf5430fabd9ade8139143ee69601c8a5bfbfd564c091da09373a2b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ROB32QJ5M7HMTYRJCCTXJF5AM5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reducing hardware requirements for entanglement distribution via joint hardware-protocol optimization","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Adri\\`a Labay-Mora, Francisco Ferreira da Silva, Stephanie Wehner","submitted_at":"2023-09-20T16:26:01Z","abstract_excerpt":"We conduct a numerical investigation of fiber-based entanglement distribution over distances of up to 1600km using a chain of processing-node quantum repeaters. We determine minimal hardware requirements while simultaneously optimizing over protocols for entanglement generation and entanglement purification, as well as over strategies for entanglement swapping. Notably, we discover that through an adequate choice of protocols the hardware improvement cost scales linearly with the distance covered. Our results highlight the crucial role of good protocol choices in significantly reducing hardwar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.11448","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/2309.11448/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":"2026-07-05T06:52:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2PV2VYjjXdsliF7KlPD7GPzzGIIboi5xZx/imAvlfJlUakjPH6Yb4KAaefzq4wJWDRWYowIMQ2iLjloqGmrjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T08:24:01.835740Z"},"content_sha256":"f73200dfeb3d4cfff945a20f4f029e0e1591f4aec52031559aa5b9f13abaa39b","schema_version":"1.0","event_id":"sha256:f73200dfeb3d4cfff945a20f4f029e0e1591f4aec52031559aa5b9f13abaa39b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/bundle.json","state_url":"https://pith.science/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/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":"2026-07-17T08:24:01Z","links":{"resolver":"https://pith.science/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5","bundle":"https://pith.science/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/bundle.json","state":"https://pith.science/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ROB32QJ5M7HMTYRJCCTXJF5AM5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ROB32QJ5M7HMTYRJCCTXJF5AM5","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":"6bf2a168e0bdbafbf734144824cdcc96908492f43fbcf227da8dee7cec2586c0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-20T16:26:01Z","title_canon_sha256":"04beaa3f8ec76e6395b768ba9b8cc88123adf3147749c8746578aa454feba903"},"schema_version":"1.0","source":{"id":"2309.11448","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.11448","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"arxiv_version","alias_value":"2309.11448v1","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.11448","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_12","alias_value":"ROB32QJ5M7HM","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_16","alias_value":"ROB32QJ5M7HMTYRJ","created_at":"2026-07-05T06:52:36Z"},{"alias_kind":"pith_short_8","alias_value":"ROB32QJ5","created_at":"2026-07-05T06:52:36Z"}],"graph_snapshots":[{"event_id":"sha256:f73200dfeb3d4cfff945a20f4f029e0e1591f4aec52031559aa5b9f13abaa39b","target":"graph","created_at":"2026-07-05T06:52:36Z","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/2309.11448/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We conduct a numerical investigation of fiber-based entanglement distribution over distances of up to 1600km using a chain of processing-node quantum repeaters. We determine minimal hardware requirements while simultaneously optimizing over protocols for entanglement generation and entanglement purification, as well as over strategies for entanglement swapping. Notably, we discover that through an adequate choice of protocols the hardware improvement cost scales linearly with the distance covered. Our results highlight the crucial role of good protocol choices in significantly reducing hardwar","authors_text":"Adri\\`a Labay-Mora, Francisco Ferreira da Silva, Stephanie Wehner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-20T16:26:01Z","title":"Reducing hardware requirements for entanglement distribution via joint hardware-protocol optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.11448","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":"sha256:70d0b4e4cdaf5430fabd9ade8139143ee69601c8a5bfbfd564c091da09373a2b","target":"record","created_at":"2026-07-05T06:52:36Z","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":"6bf2a168e0bdbafbf734144824cdcc96908492f43fbcf227da8dee7cec2586c0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-09-20T16:26:01Z","title_canon_sha256":"04beaa3f8ec76e6395b768ba9b8cc88123adf3147749c8746578aa454feba903"},"schema_version":"1.0","source":{"id":"2309.11448","kind":"arxiv","version":1}},"canonical_sha256":"8b83bd413d67cec9e22910a77497a0677cb5c98f876a7e761fbf8db0d042f19d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b83bd413d67cec9e22910a77497a0677cb5c98f876a7e761fbf8db0d042f19d","first_computed_at":"2026-07-05T06:52:36.502012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:52:36.502012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gpnAVPHGPTvszHhdA7cJxjtooIZz5cdvCP0rj2y5gY4bCUfVkYOPnhnSH4U5dAHZ8h80sWsR57dgYSS/zhYnBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:52:36.502495Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.11448","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70d0b4e4cdaf5430fabd9ade8139143ee69601c8a5bfbfd564c091da09373a2b","sha256:f73200dfeb3d4cfff945a20f4f029e0e1591f4aec52031559aa5b9f13abaa39b"],"state_sha256":"893df1f0d40ec21730c7c5419c2e37cfb517f0f3da672fdca15014a5df13a175"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+nbwsPwB4hPMkVjbNzYHYm5jAxRrJzhqO4FQGqTKYHvkm8rH9tP8fAhIdZlxsrK31D9RuXjs37HKDfm18vmcDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T08:24:01.838410Z","bundle_sha256":"f2acca52cb491430e5c1d695609e42530fb83c5679de67f4d96de05b17c949f5"}}