{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:EQC6CNPQXGTV6XKXRBMPQLNSZN","short_pith_number":"pith:EQC6CNPQ","canonical_record":{"source":{"id":"2509.06446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-09-08T08:47:11Z","cross_cats_sorted":[],"title_canon_sha256":"1219837b3abab6371d48f106f773b781984e57d728a6d8ca420a7709bf3b94af","abstract_canon_sha256":"5057d5e52ff087088b82a3a6c3bc0b10e5960a83158eaa5bc88afd66a4a8fc08"},"schema_version":"1.0"},"canonical_sha256":"2405e135f0b9a75f5d578858f82db2cb64e60878ebb16bf23f12e03d3aabd645","source":{"kind":"arxiv","id":"2509.06446","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06446","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06446v1","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06446","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_12","alias_value":"EQC6CNPQXGTV","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_16","alias_value":"EQC6CNPQXGTV6XKX","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_8","alias_value":"EQC6CNPQ","created_at":"2026-07-05T12:06:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:EQC6CNPQXGTV6XKXRBMPQLNSZN","target":"record","payload":{"canonical_record":{"source":{"id":"2509.06446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-09-08T08:47:11Z","cross_cats_sorted":[],"title_canon_sha256":"1219837b3abab6371d48f106f773b781984e57d728a6d8ca420a7709bf3b94af","abstract_canon_sha256":"5057d5e52ff087088b82a3a6c3bc0b10e5960a83158eaa5bc88afd66a4a8fc08"},"schema_version":"1.0"},"canonical_sha256":"2405e135f0b9a75f5d578858f82db2cb64e60878ebb16bf23f12e03d3aabd645","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:06:35.989835Z","signature_b64":"PuIBspXHfoYpNzwH8rNqfqm1T1hAHRagxgwHzak0OqY9OKlY7TD+uxeIpR+kfu8hxHeJataSlrwSrWbkJ6arBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2405e135f0b9a75f5d578858f82db2cb64e60878ebb16bf23f12e03d3aabd645","last_reissued_at":"2026-07-05T12:06:35.989436Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:06:35.989436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.06446","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":"2026-07-05T12:06:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RkYqPsN8TMwMrIilaJnIoUbnHwgEy2sBhqmDj16hIiv36OG0OvT7Lls2+o7AtZkQsea5TuS4CEaIuXiv9jpOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:39:19.691357Z"},"content_sha256":"261fe9c46f056ea2a26d11a489dd1cda53232ff90e4cbbaaef1a281179d9bb28","schema_version":"1.0","event_id":"sha256:261fe9c46f056ea2a26d11a489dd1cda53232ff90e4cbbaaef1a281179d9bb28"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:EQC6CNPQXGTV6XKXRBMPQLNSZN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improving Entanglement Resilience in Quantum Memories with Error-Detection-Based Distillation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"GunSik Min, Huidan Zheng, Ilkwon Sohn, Jun Heo","submitted_at":"2025-09-08T08:47:11Z","abstract_excerpt":"The degradation of entanglement in quantum memories due to decoherence is a critical challenge for scalable quantum networks. We present an entanglement distillation protocol based on the [[4,2,2]] quantum error-detecting code, deriving analytical expressions for its output fidelity and yield, and benchmarking it against the BBPSSW protocol. In addition to initial distillation, we investigate a re-distillation strategy in which stored logical entangled states are refreshed using only local operations and classical communication, avoiding the need to regenerate and redistribute entanglement fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06446","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/2509.06446/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":"2026-07-05T12:06:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vzEkl+Rh/OjRE66x9KNe+jiey1jgGs31Zxan8s4JJxT7j2OcRXuNg2utj80AkVjM7SJ+37h40EuyhwlmaJDCCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:39:19.691874Z"},"content_sha256":"a7f58825d80e144e297ec14bd90375d622decea66754521b57977480b3195105","schema_version":"1.0","event_id":"sha256:a7f58825d80e144e297ec14bd90375d622decea66754521b57977480b3195105"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/bundle.json","state_url":"https://pith.science/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/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":"2026-08-06T02:39:19Z","links":{"resolver":"https://pith.science/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN","bundle":"https://pith.science/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/bundle.json","state":"https://pith.science/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EQC6CNPQXGTV6XKXRBMPQLNSZN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EQC6CNPQXGTV6XKXRBMPQLNSZN","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":"5057d5e52ff087088b82a3a6c3bc0b10e5960a83158eaa5bc88afd66a4a8fc08","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-09-08T08:47:11Z","title_canon_sha256":"1219837b3abab6371d48f106f773b781984e57d728a6d8ca420a7709bf3b94af"},"schema_version":"1.0","source":{"id":"2509.06446","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06446","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06446v1","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06446","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_12","alias_value":"EQC6CNPQXGTV","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_16","alias_value":"EQC6CNPQXGTV6XKX","created_at":"2026-07-05T12:06:35Z"},{"alias_kind":"pith_short_8","alias_value":"EQC6CNPQ","created_at":"2026-07-05T12:06:35Z"}],"graph_snapshots":[{"event_id":"sha256:a7f58825d80e144e297ec14bd90375d622decea66754521b57977480b3195105","target":"graph","created_at":"2026-07-05T12:06:35Z","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/2509.06446/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The degradation of entanglement in quantum memories due to decoherence is a critical challenge for scalable quantum networks. We present an entanglement distillation protocol based on the [[4,2,2]] quantum error-detecting code, deriving analytical expressions for its output fidelity and yield, and benchmarking it against the BBPSSW protocol. In addition to initial distillation, we investigate a re-distillation strategy in which stored logical entangled states are refreshed using only local operations and classical communication, avoiding the need to regenerate and redistribute entanglement fro","authors_text":"GunSik Min, Huidan Zheng, Ilkwon Sohn, Jun Heo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-09-08T08:47:11Z","title":"Improving Entanglement Resilience in Quantum Memories with Error-Detection-Based Distillation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06446","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":"sha256:261fe9c46f056ea2a26d11a489dd1cda53232ff90e4cbbaaef1a281179d9bb28","target":"record","created_at":"2026-07-05T12:06:35Z","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":"5057d5e52ff087088b82a3a6c3bc0b10e5960a83158eaa5bc88afd66a4a8fc08","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-09-08T08:47:11Z","title_canon_sha256":"1219837b3abab6371d48f106f773b781984e57d728a6d8ca420a7709bf3b94af"},"schema_version":"1.0","source":{"id":"2509.06446","kind":"arxiv","version":1}},"canonical_sha256":"2405e135f0b9a75f5d578858f82db2cb64e60878ebb16bf23f12e03d3aabd645","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2405e135f0b9a75f5d578858f82db2cb64e60878ebb16bf23f12e03d3aabd645","first_computed_at":"2026-07-05T12:06:35.989436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:06:35.989436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PuIBspXHfoYpNzwH8rNqfqm1T1hAHRagxgwHzak0OqY9OKlY7TD+uxeIpR+kfu8hxHeJataSlrwSrWbkJ6arBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T12:06:35.989835Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.06446","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:261fe9c46f056ea2a26d11a489dd1cda53232ff90e4cbbaaef1a281179d9bb28","sha256:a7f58825d80e144e297ec14bd90375d622decea66754521b57977480b3195105"],"state_sha256":"e0199fb6c27fad25eebcf06756c4a4efc65de0426175c6e0791b91c8df654f38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WXDSB4hk7pBVLH8SF7ruFWr+3S+2DnkZyawBx5UNbGc/ZYvPP+H35kEfU/Q3vLgehKP3QeLeEISDin8wLSXqAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T02:39:19.695908Z","bundle_sha256":"2ae27cd22ca950f3842cacd29bf66816ea4c15662d02e2f2d1206c174c9e9d5e"}}