{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:ZSCP5YK4ZJ6BW26JROG4BRLXOT","short_pith_number":"pith:ZSCP5YK4","schema_version":"1.0","canonical_sha256":"cc84fee15cca7c1b6bc98b8dc0c57774ef5486190e52e0cd762603ff9a547e83","source":{"kind":"arxiv","id":"1205.0457","version":2},"attestation_state":"computed","paper":{"title":"Bloch-sphere approach to correlated noise in coupled qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"H{\\aa}kon Brox, Joakim Bergli, Yuri Galperin","submitted_at":"2012-05-02T15:18:56Z","abstract_excerpt":"By use of a generalized Bloch vector construction, we study the decoherence of a system composed of two interacting qubits in a general noisy environment. In particular, we investigate the effects of correlations in the noise acting on distinct qubits. Our treatment of the two-qubit system by use of the generalized Bloch vector leads to tractable analytic equations for the dynamics of the 4-level Bloch vector and allows for the application of geometrical concepts from the well known 2-level Bloch sphere. We find that in the presence of correlated or anticorrelated noise, the rate of decoherenc"},"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":"1205.0457","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-05-02T15:18:56Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"2454cab0c9b0b639140c3b2d7e15f3436487daba61def5780821e053d4cdc9c9","abstract_canon_sha256":"8aae9edd79566ebbefc6d031aaa9a21814ab066a9ae7786a6f8fb87b610f7320"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:52:00.778401Z","signature_b64":"GZWmPMtpm0ui9qt5T3kp5rgaqegTf5pdDIUduQIwQYk+xmuETiFODQ51QU4Wlf/+7scby1o30/55HF9SFCDHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc84fee15cca7c1b6bc98b8dc0c57774ef5486190e52e0cd762603ff9a547e83","last_reissued_at":"2026-05-18T03:52:00.777634Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:52:00.777634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bloch-sphere approach to correlated noise in coupled qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"H{\\aa}kon Brox, Joakim Bergli, Yuri Galperin","submitted_at":"2012-05-02T15:18:56Z","abstract_excerpt":"By use of a generalized Bloch vector construction, we study the decoherence of a system composed of two interacting qubits in a general noisy environment. In particular, we investigate the effects of correlations in the noise acting on distinct qubits. Our treatment of the two-qubit system by use of the generalized Bloch vector leads to tractable analytic equations for the dynamics of the 4-level Bloch vector and allows for the application of geometrical concepts from the well known 2-level Bloch sphere. We find that in the presence of correlated or anticorrelated noise, the rate of decoherenc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0457","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":"1205.0457","created_at":"2026-05-18T03:52:00.777760+00:00"},{"alias_kind":"arxiv_version","alias_value":"1205.0457v2","created_at":"2026-05-18T03:52:00.777760+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0457","created_at":"2026-05-18T03:52:00.777760+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZSCP5YK4ZJ6B","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZSCP5YK4ZJ6BW26J","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZSCP5YK4","created_at":"2026-05-18T12:27:30.460161+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/ZSCP5YK4ZJ6BW26JROG4BRLXOT","json":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT.json","graph_json":"https://pith.science/api/pith-number/ZSCP5YK4ZJ6BW26JROG4BRLXOT/graph.json","events_json":"https://pith.science/api/pith-number/ZSCP5YK4ZJ6BW26JROG4BRLXOT/events.json","paper":"https://pith.science/paper/ZSCP5YK4"},"agent_actions":{"view_html":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT","download_json":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT.json","view_paper":"https://pith.science/paper/ZSCP5YK4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1205.0457&json=true","fetch_graph":"https://pith.science/api/pith-number/ZSCP5YK4ZJ6BW26JROG4BRLXOT/graph.json","fetch_events":"https://pith.science/api/pith-number/ZSCP5YK4ZJ6BW26JROG4BRLXOT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT/action/storage_attestation","attest_author":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT/action/author_attestation","sign_citation":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT/action/citation_signature","submit_replication":"https://pith.science/pith/ZSCP5YK4ZJ6BW26JROG4BRLXOT/action/replication_record"}},"created_at":"2026-05-18T03:52:00.777760+00:00","updated_at":"2026-05-18T03:52:00.777760+00:00"}