{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:LHVVPBBT47JJD3WJGBSWIFLZZG","short_pith_number":"pith:LHVVPBBT","schema_version":"1.0","canonical_sha256":"59eb578433e7d291eec93065641579c989c13e8606bd176aff81cab8323595c8","source":{"kind":"arxiv","id":"2411.13943","version":1},"attestation_state":"computed","paper":{"title":"Independent Optical Frequency Combs Powered 546 km Field Test of Twin-Field Quantum Key Distribution","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Chengfang Ge, Cong Jiang, Di Ma, Hao Dong, Jian-Wei Pan, Jinping Lin, Jiu-Peng Chen, Lai Zhou, Li-Xing You, Qiang Zhang, Xiang-Bin Wang, Yang Liu, Yuanbin Fan, Zhiliang Yuan","submitted_at":"2024-11-21T08:54:03Z","abstract_excerpt":"Owing to its repeater-like rate-loss scaling, twin-field quantum key distribution (TF-QKD) has repeatedly exhibited in laboratory its superiority for secure communication over record fiber lengths. Field trials pose a new set of challenges however, which must be addressed before the technology's roll-out into real-world. Here, we verify in field the viability of using independent optical frequency combs -- installed at sites separated by a straight-line distance of 300~km -- to achieve a versatile TF-QKD setup that has no need for optical frequency dissemination and thus enables an open and ne"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2411.13943","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-11-21T08:54:03Z","cross_cats_sorted":["physics.app-ph","physics.optics"],"title_canon_sha256":"eb0546e5297e10d5cee80e72c3404b05b835c585832a49a0d62393279cc71a25","abstract_canon_sha256":"c86ad6886e92e2ba8ff3cd565cdcfb5245fae6855214410e022cc2472782f7df"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:38:39.295205Z","signature_b64":"yhctXapoOkdYOtExcjD53LPnaytdhrMcsgvlLjS4yLXQGs+YJv3/TvTHr6H362g2KoUGpSKQ84XUSOb+POWzDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59eb578433e7d291eec93065641579c989c13e8606bd176aff81cab8323595c8","last_reissued_at":"2026-07-05T09:38:39.294686Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:38:39.294686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Independent Optical Frequency Combs Powered 546 km Field Test of Twin-Field Quantum Key Distribution","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Chengfang Ge, Cong Jiang, Di Ma, Hao Dong, Jian-Wei Pan, Jinping Lin, Jiu-Peng Chen, Lai Zhou, Li-Xing You, Qiang Zhang, Xiang-Bin Wang, Yang Liu, Yuanbin Fan, Zhiliang Yuan","submitted_at":"2024-11-21T08:54:03Z","abstract_excerpt":"Owing to its repeater-like rate-loss scaling, twin-field quantum key distribution (TF-QKD) has repeatedly exhibited in laboratory its superiority for secure communication over record fiber lengths. Field trials pose a new set of challenges however, which must be addressed before the technology's roll-out into real-world. Here, we verify in field the viability of using independent optical frequency combs -- installed at sites separated by a straight-line distance of 300~km -- to achieve a versatile TF-QKD setup that has no need for optical frequency dissemination and thus enables an open and ne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.13943","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/2411.13943/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2411.13943","created_at":"2026-07-05T09:38:39.294743+00:00"},{"alias_kind":"arxiv_version","alias_value":"2411.13943v1","created_at":"2026-07-05T09:38:39.294743+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.13943","created_at":"2026-07-05T09:38:39.294743+00:00"},{"alias_kind":"pith_short_12","alias_value":"LHVVPBBT47JJ","created_at":"2026-07-05T09:38:39.294743+00:00"},{"alias_kind":"pith_short_16","alias_value":"LHVVPBBT47JJD3WJ","created_at":"2026-07-05T09:38:39.294743+00:00"},{"alias_kind":"pith_short_8","alias_value":"LHVVPBBT","created_at":"2026-07-05T09:38:39.294743+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG","json":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG.json","graph_json":"https://pith.science/api/pith-number/LHVVPBBT47JJD3WJGBSWIFLZZG/graph.json","events_json":"https://pith.science/api/pith-number/LHVVPBBT47JJD3WJGBSWIFLZZG/events.json","paper":"https://pith.science/paper/LHVVPBBT"},"agent_actions":{"view_html":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG","download_json":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG.json","view_paper":"https://pith.science/paper/LHVVPBBT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2411.13943&json=true","fetch_graph":"https://pith.science/api/pith-number/LHVVPBBT47JJD3WJGBSWIFLZZG/graph.json","fetch_events":"https://pith.science/api/pith-number/LHVVPBBT47JJD3WJGBSWIFLZZG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG/action/storage_attestation","attest_author":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG/action/author_attestation","sign_citation":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG/action/citation_signature","submit_replication":"https://pith.science/pith/LHVVPBBT47JJD3WJGBSWIFLZZG/action/replication_record"}},"created_at":"2026-07-05T09:38:39.294743+00:00","updated_at":"2026-07-05T09:38:39.294743+00:00"}