{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:UJJ3VKXBQGRHAI43JT5NBSAH7D","short_pith_number":"pith:UJJ3VKXB","schema_version":"1.0","canonical_sha256":"a253baaae181a270239b4cfad0c807f8d1b2275e841890602deacc6f42044f0c","source":{"kind":"arxiv","id":"1310.5433","version":1},"attestation_state":"computed","paper":{"title":"Efficient entanglement operator for a multi-qubit system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chiara Bagnasco, Mikio Nakahara, Yasushi Kondo","submitted_at":"2013-10-21T06:29:48Z","abstract_excerpt":"In liquid-state NMR quantum computation, a selective entanglement operator between qubits 2 and 3 of a three-qubit molecule is conventionally realized by applying a pair of short $\\pi$-pulses to qubit 1. This method, called refocusing, is well suited for heteronuclear molecules. When the molecule is homonuclear, however, the $\\pi$-pulses applied to qubit 1 often induce unwanted $z$-rotations on qubits 2 and 3, even if the $z$-components of qubits 2 and 3 are left unchanged. This phenomenon is known as the transient Bloch-Siegert effect, and compensation thereof is required for precise gate ope"},"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":"1310.5433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-21T06:29:48Z","cross_cats_sorted":[],"title_canon_sha256":"94f83f215c2b468372bd5468c0e14a4fc97f2a8a9c96190c7c7dddbe5dcd82b9","abstract_canon_sha256":"9179e4e79c30440865843eca44abd7e9ef6b0df82649a3c6c6e88ed152ff4d6c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:02.182327Z","signature_b64":"MVsexjIz4VGllwQG6Pj++OPkefzz5n1ivHpiMAbdWJDluznAiER3TWC0rR4v+XyifYuHQdm2xFTkxCs+6PDsAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a253baaae181a270239b4cfad0c807f8d1b2275e841890602deacc6f42044f0c","last_reissued_at":"2026-05-18T00:37:02.181654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:02.181654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Efficient entanglement operator for a multi-qubit system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chiara Bagnasco, Mikio Nakahara, Yasushi Kondo","submitted_at":"2013-10-21T06:29:48Z","abstract_excerpt":"In liquid-state NMR quantum computation, a selective entanglement operator between qubits 2 and 3 of a three-qubit molecule is conventionally realized by applying a pair of short $\\pi$-pulses to qubit 1. This method, called refocusing, is well suited for heteronuclear molecules. When the molecule is homonuclear, however, the $\\pi$-pulses applied to qubit 1 often induce unwanted $z$-rotations on qubits 2 and 3, even if the $z$-components of qubits 2 and 3 are left unchanged. This phenomenon is known as the transient Bloch-Siegert effect, and compensation thereof is required for precise gate ope"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.5433","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":""},"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":"1310.5433","created_at":"2026-05-18T00:37:02.181752+00:00"},{"alias_kind":"arxiv_version","alias_value":"1310.5433v1","created_at":"2026-05-18T00:37:02.181752+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.5433","created_at":"2026-05-18T00:37:02.181752+00:00"},{"alias_kind":"pith_short_12","alias_value":"UJJ3VKXBQGRH","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_16","alias_value":"UJJ3VKXBQGRHAI43","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_8","alias_value":"UJJ3VKXB","created_at":"2026-05-18T12:28:02.375192+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/UJJ3VKXBQGRHAI43JT5NBSAH7D","json":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D.json","graph_json":"https://pith.science/api/pith-number/UJJ3VKXBQGRHAI43JT5NBSAH7D/graph.json","events_json":"https://pith.science/api/pith-number/UJJ3VKXBQGRHAI43JT5NBSAH7D/events.json","paper":"https://pith.science/paper/UJJ3VKXB"},"agent_actions":{"view_html":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D","download_json":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D.json","view_paper":"https://pith.science/paper/UJJ3VKXB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1310.5433&json=true","fetch_graph":"https://pith.science/api/pith-number/UJJ3VKXBQGRHAI43JT5NBSAH7D/graph.json","fetch_events":"https://pith.science/api/pith-number/UJJ3VKXBQGRHAI43JT5NBSAH7D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D/action/storage_attestation","attest_author":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D/action/author_attestation","sign_citation":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D/action/citation_signature","submit_replication":"https://pith.science/pith/UJJ3VKXBQGRHAI43JT5NBSAH7D/action/replication_record"}},"created_at":"2026-05-18T00:37:02.181752+00:00","updated_at":"2026-05-18T00:37:02.181752+00:00"}