{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:HARD4X2GNOEF3SVB5MNXSEUSSC","short_pith_number":"pith:HARD4X2G","schema_version":"1.0","canonical_sha256":"38223e5f466b885dcaa1eb1b79129290aa75530dad170ec9f3b6758b315301d2","source":{"kind":"arxiv","id":"1109.3342","version":1},"attestation_state":"computed","paper":{"title":"Two-qubit Gate of Combined Single Spin Rotation and Inter-dot Spin Exchange in a Double Quantum Dot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"K. Yoshida, M. Pioro-Ladri\\`ere, R. Brunner, S. Tarucha, T. Kubo, T. Obata, T. Taniyama, Y.-S. Shin, Y. Tokura","submitted_at":"2011-09-15T13:18:17Z","abstract_excerpt":"A crucial requirement for quantum information processing is the realization of multiple-qubit quantum gates. Here, we demonstrate an electron spin based all-electrical two-qubit gate consisting of single spin rotations and inter-dot spin exchange in a double quantum dot. A partially entangled output state is obtained by the application of the two-qubit gate to an initial, uncorrelated state. We find that the degree of entanglement is controllable by the exchange operation time. The approach represents a key step towards the realization of universal multiple qubit gates."},"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":"1109.3342","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-15T13:18:17Z","cross_cats_sorted":[],"title_canon_sha256":"d3f7c552edb4ffde08a05d90db31ca6812245e15e43558474567be979c47cc03","abstract_canon_sha256":"9195476f72fd1ce1cf9c7585f52b44de3e78a758524fd39c27ed66072020629d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:32.475757Z","signature_b64":"KYo3hI9HvNHZw88mMZi3RDbB5IJUvywo40TO4OJpt9rS4Z6bLzw7VGK0FX0quM+rPdyGcdClIJoAq38BhigODg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"38223e5f466b885dcaa1eb1b79129290aa75530dad170ec9f3b6758b315301d2","last_reissued_at":"2026-05-18T02:00:32.475178Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:32.475178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Two-qubit Gate of Combined Single Spin Rotation and Inter-dot Spin Exchange in a Double Quantum Dot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"K. Yoshida, M. Pioro-Ladri\\`ere, R. Brunner, S. Tarucha, T. Kubo, T. Obata, T. Taniyama, Y.-S. Shin, Y. Tokura","submitted_at":"2011-09-15T13:18:17Z","abstract_excerpt":"A crucial requirement for quantum information processing is the realization of multiple-qubit quantum gates. Here, we demonstrate an electron spin based all-electrical two-qubit gate consisting of single spin rotations and inter-dot spin exchange in a double quantum dot. A partially entangled output state is obtained by the application of the two-qubit gate to an initial, uncorrelated state. We find that the degree of entanglement is controllable by the exchange operation time. The approach represents a key step towards the realization of universal multiple qubit gates."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.3342","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":"1109.3342","created_at":"2026-05-18T02:00:32.475271+00:00"},{"alias_kind":"arxiv_version","alias_value":"1109.3342v1","created_at":"2026-05-18T02:00:32.475271+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.3342","created_at":"2026-05-18T02:00:32.475271+00:00"},{"alias_kind":"pith_short_12","alias_value":"HARD4X2GNOEF","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"HARD4X2GNOEF3SVB","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"HARD4X2G","created_at":"2026-05-18T12:26:30.835961+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/HARD4X2GNOEF3SVB5MNXSEUSSC","json":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC.json","graph_json":"https://pith.science/api/pith-number/HARD4X2GNOEF3SVB5MNXSEUSSC/graph.json","events_json":"https://pith.science/api/pith-number/HARD4X2GNOEF3SVB5MNXSEUSSC/events.json","paper":"https://pith.science/paper/HARD4X2G"},"agent_actions":{"view_html":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC","download_json":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC.json","view_paper":"https://pith.science/paper/HARD4X2G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1109.3342&json=true","fetch_graph":"https://pith.science/api/pith-number/HARD4X2GNOEF3SVB5MNXSEUSSC/graph.json","fetch_events":"https://pith.science/api/pith-number/HARD4X2GNOEF3SVB5MNXSEUSSC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC/action/storage_attestation","attest_author":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC/action/author_attestation","sign_citation":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC/action/citation_signature","submit_replication":"https://pith.science/pith/HARD4X2GNOEF3SVB5MNXSEUSSC/action/replication_record"}},"created_at":"2026-05-18T02:00:32.475271+00:00","updated_at":"2026-05-18T02:00:32.475271+00:00"}