{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FUWW4FZH7HIFJGNN4A3JK7267I","short_pith_number":"pith:FUWW4FZH","canonical_record":{"source":{"id":"1310.2554","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-09T17:38:44Z","cross_cats_sorted":[],"title_canon_sha256":"9401c83ed1d25e4f30406da2c69a2a80a35e602e2bf28ba925ff0d1ae28a545c","abstract_canon_sha256":"fb564ff2031517c1cc532281e06f6e72d21e4db341810949ee0c9606f263b904"},"schema_version":"1.0"},"canonical_sha256":"2d2d6e1727f9d05499ade036957f5efa301b8f6bfc966552adbdc8b592735d0d","source":{"kind":"arxiv","id":"1310.2554","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2554","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2554v2","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2554","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"pith_short_12","alias_value":"FUWW4FZH7HIF","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FUWW4FZH7HIFJGNN","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FUWW4FZH","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FUWW4FZH7HIFJGNN4A3JK7267I","target":"record","payload":{"canonical_record":{"source":{"id":"1310.2554","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-09T17:38:44Z","cross_cats_sorted":[],"title_canon_sha256":"9401c83ed1d25e4f30406da2c69a2a80a35e602e2bf28ba925ff0d1ae28a545c","abstract_canon_sha256":"fb564ff2031517c1cc532281e06f6e72d21e4db341810949ee0c9606f263b904"},"schema_version":"1.0"},"canonical_sha256":"2d2d6e1727f9d05499ade036957f5efa301b8f6bfc966552adbdc8b592735d0d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:04:36.939881Z","signature_b64":"KZgK+gdO7Ip5gny11GmqiexoXeys9eQgm/VQz3xCbvlCDgrlQrXJzqaohbQif2ZmlYYFSh3FbghbfWKxPEsLBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d2d6e1727f9d05499ade036957f5efa301b8f6bfc966552adbdc8b592735d0d","last_reissued_at":"2026-05-18T03:04:36.938855Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:04:36.938855Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.2554","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:04:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XikmNx2UG2nhn1llM6VfkTldGmDQEFUblhIKoiYkuPUTNP4Zo6KtrVI2SHrnxatzhnacRv+dbKQi3q6MFLmpBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T06:39:54.196369Z"},"content_sha256":"0bfa32904ab61a7d5708ff3faa8c443f8910439f0c0bc776cbe4e65c671fdb03","schema_version":"1.0","event_id":"sha256:0bfa32904ab61a7d5708ff3faa8c443f8910439f0c0bc776cbe4e65c671fdb03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FUWW4FZH7HIFJGNN4A3JK7267I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Han Chuen Lim, Mao Tong Liu","submitted_at":"2013-10-09T17:38:44Z","abstract_excerpt":"We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment demonstrating the feasibility of using heralded photons to improve the noise tolerance of quantum key distribution. In our experiment, the optical fiber channel was corrupted by noise photons to the extent that if we had used an attenuated laser as the photon source, a photon signal-to-noise ratio of < 4.0 at the receiver, corresponding to a quantum bit-error rate of > 10.0%, would have prevented the effective generation of secure keys. Using a photon heralding scheme, the photon signal-to-noise"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2554","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T03:04:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+cd/3tS8rm7SR9yRosdS1tk3g1hDOdhrvob64GbBdioisGRZ37E4VXF1gYEiPOGNVxy9FQ7HV+U/7QiAf6oNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T06:39:54.197132Z"},"content_sha256":"9e26b5e18e664272e0c40ed50bb8b39f39435b6b87075ccdc6fadd0d0de0a475","schema_version":"1.0","event_id":"sha256:9e26b5e18e664272e0c40ed50bb8b39f39435b6b87075ccdc6fadd0d0de0a475"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FUWW4FZH7HIFJGNN4A3JK7267I/bundle.json","state_url":"https://pith.science/pith/FUWW4FZH7HIFJGNN4A3JK7267I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FUWW4FZH7HIFJGNN4A3JK7267I/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":"2026-06-10T06:39:54Z","links":{"resolver":"https://pith.science/pith/FUWW4FZH7HIFJGNN4A3JK7267I","bundle":"https://pith.science/pith/FUWW4FZH7HIFJGNN4A3JK7267I/bundle.json","state":"https://pith.science/pith/FUWW4FZH7HIFJGNN4A3JK7267I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FUWW4FZH7HIFJGNN4A3JK7267I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FUWW4FZH7HIFJGNN4A3JK7267I","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":"fb564ff2031517c1cc532281e06f6e72d21e4db341810949ee0c9606f263b904","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-09T17:38:44Z","title_canon_sha256":"9401c83ed1d25e4f30406da2c69a2a80a35e602e2bf28ba925ff0d1ae28a545c"},"schema_version":"1.0","source":{"id":"1310.2554","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2554","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2554v2","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2554","created_at":"2026-05-18T03:04:36Z"},{"alias_kind":"pith_short_12","alias_value":"FUWW4FZH7HIF","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FUWW4FZH7HIFJGNN","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FUWW4FZH","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:9e26b5e18e664272e0c40ed50bb8b39f39435b6b87075ccdc6fadd0d0de0a475","target":"graph","created_at":"2026-05-18T03:04:36Z","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"},"paper":{"abstract_excerpt":"We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment demonstrating the feasibility of using heralded photons to improve the noise tolerance of quantum key distribution. In our experiment, the optical fiber channel was corrupted by noise photons to the extent that if we had used an attenuated laser as the photon source, a photon signal-to-noise ratio of < 4.0 at the receiver, corresponding to a quantum bit-error rate of > 10.0%, would have prevented the effective generation of secure keys. Using a photon heralding scheme, the photon signal-to-noise","authors_text":"Han Chuen Lim, Mao Tong Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-09T17:38:44Z","title":"Transmission of O-band wavelength-division-multiplexed heralded photons over a noise-corrupted optical fiber channel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2554","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":"sha256:0bfa32904ab61a7d5708ff3faa8c443f8910439f0c0bc776cbe4e65c671fdb03","target":"record","created_at":"2026-05-18T03:04:36Z","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":"fb564ff2031517c1cc532281e06f6e72d21e4db341810949ee0c9606f263b904","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-09T17:38:44Z","title_canon_sha256":"9401c83ed1d25e4f30406da2c69a2a80a35e602e2bf28ba925ff0d1ae28a545c"},"schema_version":"1.0","source":{"id":"1310.2554","kind":"arxiv","version":2}},"canonical_sha256":"2d2d6e1727f9d05499ade036957f5efa301b8f6bfc966552adbdc8b592735d0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d2d6e1727f9d05499ade036957f5efa301b8f6bfc966552adbdc8b592735d0d","first_computed_at":"2026-05-18T03:04:36.938855Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:04:36.938855Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KZgK+gdO7Ip5gny11GmqiexoXeys9eQgm/VQz3xCbvlCDgrlQrXJzqaohbQif2ZmlYYFSh3FbghbfWKxPEsLBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:04:36.939881Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.2554","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0bfa32904ab61a7d5708ff3faa8c443f8910439f0c0bc776cbe4e65c671fdb03","sha256:9e26b5e18e664272e0c40ed50bb8b39f39435b6b87075ccdc6fadd0d0de0a475"],"state_sha256":"6fe59e5a7ac63b059ea268f9485ac1385e56bb88fcd47f5c6d3b432d30c42a91"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q1GC1W9TRtO8+tg2pXQGW1Vb03Nxw3sgHsIEJIUkTpsPUoi+ypOOTZLz3CCDiVTACYdWWTWNIThPV/8MYEzNAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T06:39:54.201193Z","bundle_sha256":"0e21f5eb3fe34acd8f17f45ec377efaa5b5c07be351313274d8ef6b7f119cad0"}}