{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:44Q2GV2GEO3S775RUVDI3JT3J6","short_pith_number":"pith:44Q2GV2G","canonical_record":{"source":{"id":"2112.11165","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-21T13:00:28Z","cross_cats_sorted":["cs.CR","cs.NI","physics.optics"],"title_canon_sha256":"2aa4a44bc54cca50852f3707c5dc1db912f24cd6416152bfc80f270e37e26e1a","abstract_canon_sha256":"05e7ffd510ff2fad2c37bc604efb0c73ed7b2bc76b810a2cd9b7a394f04ae886"},"schema_version":"1.0"},"canonical_sha256":"e721a3574623b72fffb1a5468da67b4f90c53ded4ab2ee1df3829bf0926de56f","source":{"kind":"arxiv","id":"2112.11165","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11165","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11165v3","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11165","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_12","alias_value":"44Q2GV2GEO3S","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_16","alias_value":"44Q2GV2GEO3S775R","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_8","alias_value":"44Q2GV2G","created_at":"2026-07-05T05:59:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:44Q2GV2GEO3S775RUVDI3JT3J6","target":"record","payload":{"canonical_record":{"source":{"id":"2112.11165","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-21T13:00:28Z","cross_cats_sorted":["cs.CR","cs.NI","physics.optics"],"title_canon_sha256":"2aa4a44bc54cca50852f3707c5dc1db912f24cd6416152bfc80f270e37e26e1a","abstract_canon_sha256":"05e7ffd510ff2fad2c37bc604efb0c73ed7b2bc76b810a2cd9b7a394f04ae886"},"schema_version":"1.0"},"canonical_sha256":"e721a3574623b72fffb1a5468da67b4f90c53ded4ab2ee1df3829bf0926de56f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:59:19.872400Z","signature_b64":"VDQCUIwbYAKOPVWV1TF/msPylu201Ki7bwRQTfGG8tHzXR3V3yyX/2y01r0yAsUiu0BHVzs4YfISBhlVyq+yDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e721a3574623b72fffb1a5468da67b4f90c53ded4ab2ee1df3829bf0926de56f","last_reissued_at":"2026-07-05T05:59:19.872006Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:59:19.872006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.11165","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:59:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WZEXOaijX+r5KN1VOvnhjz+Bcd+ryT4xqaWDpLlj1UYU8h3TFZml+mXn72Ug/Jjx9kbvg+5bHKCeJRdoMaUtAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:29:28.104822Z"},"content_sha256":"2503acf643b53756b322ead2cc506d7b27cc2814baf7d940602f841718f5c4c7","schema_version":"1.0","event_id":"sha256:2503acf643b53756b322ead2cc506d7b27cc2814baf7d940602f841718f5c4c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:44Q2GV2GEO3S775RUVDI3JT3J6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CR","cs.NI","physics.optics"],"primary_cat":"quant-ph","authors_text":"Chen-Xun Weng, Hua-Lei Yin, Yang Wang, Yao Fu, Yuan-Mei Xie, Yu-Shuo Lu, Zeng-Bing Chen","submitted_at":"2021-12-21T13:00:28Z","abstract_excerpt":"Implementation of a twin-field quantum key distribution network faces limitations, including the low tolerance of interference errors for phase-matching type protocols and the strict constraint regarding intensity and probability for sending-or-not-sending type protocols. Here, we propose a two-photon twin-field quantum key distribution protocol and achieve twin-field-type two-photon interference through post-matching phase-correlated single-photon interference events. We exploit the non-interference mode as the code mode to highly tolerate interference errors, and the two-photon interference "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11165","kind":"arxiv","version":3},"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/2112.11165/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":"2026-07-05T05:59:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HdNhMcXPfx9erq6jrEXh55j4xGRZlBNeWErE6AR6qSMIWPAn4oGgI+3wG7cSMcFGG0QBSCEDhrEoGyhmDMetDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:29:28.105224Z"},"content_sha256":"503c8dd2fd6005d42d51170024face5c6aa20b38ca209875f6e2067190b8f976","schema_version":"1.0","event_id":"sha256:503c8dd2fd6005d42d51170024face5c6aa20b38ca209875f6e2067190b8f976"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44Q2GV2GEO3S775RUVDI3JT3J6/bundle.json","state_url":"https://pith.science/pith/44Q2GV2GEO3S775RUVDI3JT3J6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44Q2GV2GEO3S775RUVDI3JT3J6/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":"2026-08-04T17:29:28Z","links":{"resolver":"https://pith.science/pith/44Q2GV2GEO3S775RUVDI3JT3J6","bundle":"https://pith.science/pith/44Q2GV2GEO3S775RUVDI3JT3J6/bundle.json","state":"https://pith.science/pith/44Q2GV2GEO3S775RUVDI3JT3J6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44Q2GV2GEO3S775RUVDI3JT3J6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:44Q2GV2GEO3S775RUVDI3JT3J6","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":"05e7ffd510ff2fad2c37bc604efb0c73ed7b2bc76b810a2cd9b7a394f04ae886","cross_cats_sorted":["cs.CR","cs.NI","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-21T13:00:28Z","title_canon_sha256":"2aa4a44bc54cca50852f3707c5dc1db912f24cd6416152bfc80f270e37e26e1a"},"schema_version":"1.0","source":{"id":"2112.11165","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11165","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11165v3","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11165","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_12","alias_value":"44Q2GV2GEO3S","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_16","alias_value":"44Q2GV2GEO3S775R","created_at":"2026-07-05T05:59:19Z"},{"alias_kind":"pith_short_8","alias_value":"44Q2GV2G","created_at":"2026-07-05T05:59:19Z"}],"graph_snapshots":[{"event_id":"sha256:503c8dd2fd6005d42d51170024face5c6aa20b38ca209875f6e2067190b8f976","target":"graph","created_at":"2026-07-05T05:59:19Z","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/2112.11165/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Implementation of a twin-field quantum key distribution network faces limitations, including the low tolerance of interference errors for phase-matching type protocols and the strict constraint regarding intensity and probability for sending-or-not-sending type protocols. Here, we propose a two-photon twin-field quantum key distribution protocol and achieve twin-field-type two-photon interference through post-matching phase-correlated single-photon interference events. We exploit the non-interference mode as the code mode to highly tolerate interference errors, and the two-photon interference ","authors_text":"Chen-Xun Weng, Hua-Lei Yin, Yang Wang, Yao Fu, Yuan-Mei Xie, Yu-Shuo Lu, Zeng-Bing Chen","cross_cats":["cs.CR","cs.NI","physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-21T13:00:28Z","title":"Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11165","kind":"arxiv","version":3},"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":"sha256:2503acf643b53756b322ead2cc506d7b27cc2814baf7d940602f841718f5c4c7","target":"record","created_at":"2026-07-05T05:59:19Z","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":"05e7ffd510ff2fad2c37bc604efb0c73ed7b2bc76b810a2cd9b7a394f04ae886","cross_cats_sorted":["cs.CR","cs.NI","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-21T13:00:28Z","title_canon_sha256":"2aa4a44bc54cca50852f3707c5dc1db912f24cd6416152bfc80f270e37e26e1a"},"schema_version":"1.0","source":{"id":"2112.11165","kind":"arxiv","version":3}},"canonical_sha256":"e721a3574623b72fffb1a5468da67b4f90c53ded4ab2ee1df3829bf0926de56f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e721a3574623b72fffb1a5468da67b4f90c53ded4ab2ee1df3829bf0926de56f","first_computed_at":"2026-07-05T05:59:19.872006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:59:19.872006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VDQCUIwbYAKOPVWV1TF/msPylu201Ki7bwRQTfGG8tHzXR3V3yyX/2y01r0yAsUiu0BHVzs4YfISBhlVyq+yDg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:59:19.872400Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.11165","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2503acf643b53756b322ead2cc506d7b27cc2814baf7d940602f841718f5c4c7","sha256:503c8dd2fd6005d42d51170024face5c6aa20b38ca209875f6e2067190b8f976"],"state_sha256":"ba79ac19ed1cf8c65c0c1d52b55ffc1cedc6fb829f6a45c2aa2da16c8c06153e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vkURN3+WRLr2puRwlZn4ORL406xxZ4/3rYIxm5hiR0q7EkKGID52MNjHE1HxdgtO6aqBC7AgmHPKFNXxzxcQAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T17:29:28.108589Z","bundle_sha256":"04e49d6c8d344c29afc72bf393ab774c35a99726634404b1d2c149e9b04324b5"}}