{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:WN6AVPQT54Z2RCQJWCO4Z3JBAO","short_pith_number":"pith:WN6AVPQT","schema_version":"1.0","canonical_sha256":"b37c0abe13ef33a88a09b09dcced21039ffce4c72d1e26ce25522ead4c77de3a","source":{"kind":"arxiv","id":"1307.7590","version":2},"attestation_state":"computed","paper":{"title":"Improvement of two-way continuous-variable quantum key distribution using optical amplifiers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christian Weedbrook, Hong Guo, Maozhu Sun, Song Yu, Wanyi Gu, Xiang Peng, Yi-Chen Zhang, Zhengyu Li","submitted_at":"2013-07-29T14:14:07Z","abstract_excerpt":"The imperfections of a receiver's detector affect the performance of two-way continuous-variable quantum key distribution protocols and are difficult to adjust in practical situations. We propose a method to improve the performance of two-way continuous-variable quantum key distribution by adding a parameter-adjustable optical amplifier at the receiver. A security analysis is derived against a two-mode collective entangling cloner attack. Our simulations show that the proposed method can improve the performance of protocols as long as the inherent noise of the amplifier is lower than a critica"},"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":"1307.7590","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T14:14:07Z","cross_cats_sorted":[],"title_canon_sha256":"67884b28ffb1bd51ab8c4d11597b9139bdf8de6c81a552d6d193827b421831b4","abstract_canon_sha256":"bef6507d19f7ba1b620f4c4fb32aaf16ca3e799621740252dbfbaaa269ae6b71"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:58:23.459307Z","signature_b64":"OxDOIiFF1A9BVBeqM+FEhjebkmKOksFTuaGW5GUweqejbe6nF4FXA8n3OUdqHyu+zrq8EKvj3JdwbHrSKUkmCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b37c0abe13ef33a88a09b09dcced21039ffce4c72d1e26ce25522ead4c77de3a","last_reissued_at":"2026-05-18T02:58:23.458877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:58:23.458877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Improvement of two-way continuous-variable quantum key distribution using optical amplifiers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christian Weedbrook, Hong Guo, Maozhu Sun, Song Yu, Wanyi Gu, Xiang Peng, Yi-Chen Zhang, Zhengyu Li","submitted_at":"2013-07-29T14:14:07Z","abstract_excerpt":"The imperfections of a receiver's detector affect the performance of two-way continuous-variable quantum key distribution protocols and are difficult to adjust in practical situations. We propose a method to improve the performance of two-way continuous-variable quantum key distribution by adding a parameter-adjustable optical amplifier at the receiver. A security analysis is derived against a two-mode collective entangling cloner attack. Our simulations show that the proposed method can improve the performance of protocols as long as the inherent noise of the amplifier is lower than a critica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7590","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1307.7590","created_at":"2026-05-18T02:58:23.458941+00:00"},{"alias_kind":"arxiv_version","alias_value":"1307.7590v2","created_at":"2026-05-18T02:58:23.458941+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7590","created_at":"2026-05-18T02:58:23.458941+00:00"},{"alias_kind":"pith_short_12","alias_value":"WN6AVPQT54Z2","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_16","alias_value":"WN6AVPQT54Z2RCQJ","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_8","alias_value":"WN6AVPQT","created_at":"2026-05-18T12:28:04.890932+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/WN6AVPQT54Z2RCQJWCO4Z3JBAO","json":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO.json","graph_json":"https://pith.science/api/pith-number/WN6AVPQT54Z2RCQJWCO4Z3JBAO/graph.json","events_json":"https://pith.science/api/pith-number/WN6AVPQT54Z2RCQJWCO4Z3JBAO/events.json","paper":"https://pith.science/paper/WN6AVPQT"},"agent_actions":{"view_html":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO","download_json":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO.json","view_paper":"https://pith.science/paper/WN6AVPQT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1307.7590&json=true","fetch_graph":"https://pith.science/api/pith-number/WN6AVPQT54Z2RCQJWCO4Z3JBAO/graph.json","fetch_events":"https://pith.science/api/pith-number/WN6AVPQT54Z2RCQJWCO4Z3JBAO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO/action/storage_attestation","attest_author":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO/action/author_attestation","sign_citation":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO/action/citation_signature","submit_replication":"https://pith.science/pith/WN6AVPQT54Z2RCQJWCO4Z3JBAO/action/replication_record"}},"created_at":"2026-05-18T02:58:23.458941+00:00","updated_at":"2026-05-18T02:58:23.458941+00:00"}