{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:EGB5ZRKUHI5XUS3ZLEGO3KLFPM","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":"219c6cd7973da1d8ee56cc78f5fcadbcffd9a5114bccea12f8035088b44334a8","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1997-04-10T02:35:04Z","title_canon_sha256":"20d97a43b56e5e147017d2614490cc2cf0236aaa700bc08009fdf31a37c75044"},"schema_version":"1.0","source":{"id":"quant-ph/9704020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/9704020","created_at":"2026-05-18T01:05:01Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/9704020v1","created_at":"2026-05-18T01:05:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/9704020","created_at":"2026-05-18T01:05:01Z"},{"alias_kind":"pith_short_12","alias_value":"EGB5ZRKUHI5X","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"EGB5ZRKUHI5XUS3Z","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"EGB5ZRKU","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:d9b64aa44f2fc8d0f26c45c9fa67f12bcc1864d9e48c957b9a80437220f8677a","target":"graph","created_at":"2026-05-18T01:05:01Z","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 show that, there are physical means for cloning two non-orthogonal pure states which are secretly chosen from a certain set $% \\$={ | \\Psi_0 > , | \\Psi_1 > }$. The states are cloned through a unitary evolution together with a measurement. The cloning efficiency can not attain 100%. With some negative measurement results, the cloning fails.","authors_text":"Guang-Can Guo (University of Science, Lu-Ming Duan, Technology of China)","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"1997-04-10T02:35:04Z","title":"Two non-orthogonal states can be cloned by a unitary-reduction process"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/9704020","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":"sha256:3e4e85e1189b21429e9734f718cf2edd7fdab189e718d52b309d71587a2b398b","target":"record","created_at":"2026-05-18T01:05:01Z","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":"219c6cd7973da1d8ee56cc78f5fcadbcffd9a5114bccea12f8035088b44334a8","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1997-04-10T02:35:04Z","title_canon_sha256":"20d97a43b56e5e147017d2614490cc2cf0236aaa700bc08009fdf31a37c75044"},"schema_version":"1.0","source":{"id":"quant-ph/9704020","kind":"arxiv","version":1}},"canonical_sha256":"2183dcc5543a3b7a4b79590ceda9657b35772608fb55f9145a8c7f9ed2f1e1cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2183dcc5543a3b7a4b79590ceda9657b35772608fb55f9145a8c7f9ed2f1e1cb","first_computed_at":"2026-05-18T01:05:01.907426Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:01.907426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U0afQTVGqxVToYL/OgkbnnTuQgAIRWFlrb1f3HL4bcKzDasj48Ji3v2iDTQl91Qci3mql5U0VbW7YB6XLWI8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:01.908613Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/9704020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e4e85e1189b21429e9734f718cf2edd7fdab189e718d52b309d71587a2b398b","sha256:d9b64aa44f2fc8d0f26c45c9fa67f12bcc1864d9e48c957b9a80437220f8677a"],"state_sha256":"24287adad1f2c6b07036f4b820e50c64720ae2772a74300fe2f89b05c60c76ce"}