{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:ABGQHJRWPZGXH7X4QJLW6GRKJY","short_pith_number":"pith:ABGQHJRW","schema_version":"1.0","canonical_sha256":"004d03a6367e4d73fefc82576f1a2a4e0c58bf528042f2e6d0c08934a5b2a6aa","source":{"kind":"arxiv","id":"1309.6405","version":2},"attestation_state":"computed","paper":{"title":"Error matrices in quantum process tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander N. Korotkov","submitted_at":"2013-09-25T05:54:25Z","abstract_excerpt":"We discuss characterization of experimental quantum gates by the error matrix, which is similar to the standard process matrix $\\chi$ in the Pauli basis, except the desired unitary operation is factored out, by formally placing it either before or after the error process. The error matrix has only one large element, which is equal to the process fidelity, while other elements are small and indicate imperfections. The imaginary parts of the elements along the left column and/or top row directly indicate the unitary imperfection and can be used to find the needed correction. We discuss a relativ"},"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":"1309.6405","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-09-25T05:54:25Z","cross_cats_sorted":[],"title_canon_sha256":"ca7b4fdcef82519f039c6a6bd178d050ec4f9a344ded5a2250d3a2df33970409","abstract_canon_sha256":"d2a5c855d847f9ba8e76b192e95815b30d7373f6b884259b9f40194785a4de21"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:56.381846Z","signature_b64":"FjhISDiCWPWwwec4QI2sF1v72Q4sloB5D16Fm0adsadhgeTu43yRapBdASGYrsaVm+pK6W2yoj+1w3wx/fR8CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"004d03a6367e4d73fefc82576f1a2a4e0c58bf528042f2e6d0c08934a5b2a6aa","last_reissued_at":"2026-05-18T03:07:56.381168Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:56.381168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Error matrices in quantum process tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander N. Korotkov","submitted_at":"2013-09-25T05:54:25Z","abstract_excerpt":"We discuss characterization of experimental quantum gates by the error matrix, which is similar to the standard process matrix $\\chi$ in the Pauli basis, except the desired unitary operation is factored out, by formally placing it either before or after the error process. The error matrix has only one large element, which is equal to the process fidelity, while other elements are small and indicate imperfections. The imaginary parts of the elements along the left column and/or top row directly indicate the unitary imperfection and can be used to find the needed correction. We discuss a relativ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.6405","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":"1309.6405","created_at":"2026-05-18T03:07:56.381245+00:00"},{"alias_kind":"arxiv_version","alias_value":"1309.6405v2","created_at":"2026-05-18T03:07:56.381245+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.6405","created_at":"2026-05-18T03:07:56.381245+00:00"},{"alias_kind":"pith_short_12","alias_value":"ABGQHJRWPZGX","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_16","alias_value":"ABGQHJRWPZGXH7X4","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_8","alias_value":"ABGQHJRW","created_at":"2026-05-18T12:27:38.830355+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":2,"sample":[{"citing_arxiv_id":"2606.08874","citing_title":"Impact of gate-voltage noise on silicon spin-qubit variational quantum eigensolvers","ref_index":65,"is_internal_anchor":true},{"citing_arxiv_id":"2506.09686","citing_title":"Multi-Qubit Parity Gates for Rydberg Atoms in Various Configurations","ref_index":58,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY","json":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY.json","graph_json":"https://pith.science/api/pith-number/ABGQHJRWPZGXH7X4QJLW6GRKJY/graph.json","events_json":"https://pith.science/api/pith-number/ABGQHJRWPZGXH7X4QJLW6GRKJY/events.json","paper":"https://pith.science/paper/ABGQHJRW"},"agent_actions":{"view_html":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY","download_json":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY.json","view_paper":"https://pith.science/paper/ABGQHJRW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1309.6405&json=true","fetch_graph":"https://pith.science/api/pith-number/ABGQHJRWPZGXH7X4QJLW6GRKJY/graph.json","fetch_events":"https://pith.science/api/pith-number/ABGQHJRWPZGXH7X4QJLW6GRKJY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY/action/storage_attestation","attest_author":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY/action/author_attestation","sign_citation":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY/action/citation_signature","submit_replication":"https://pith.science/pith/ABGQHJRWPZGXH7X4QJLW6GRKJY/action/replication_record"}},"created_at":"2026-05-18T03:07:56.381245+00:00","updated_at":"2026-05-18T03:07:56.381245+00:00"}