{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:F3TVTO7GTWIPVOOYXYTF7QOZCL","short_pith_number":"pith:F3TVTO7G","schema_version":"1.0","canonical_sha256":"2ee759bbe69d90fab9d8be265fc1d912f49e0c645364f8df0d9f6962bf37ebb6","source":{"kind":"arxiv","id":"1411.6269","version":2},"attestation_state":"computed","paper":{"title":"Dynamics of entanglement of two electron spins interacting with nuclear spin baths in quantum dots","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Igor Bragar, {\\L}ukasz Cywi\\'nski","submitted_at":"2014-11-23T17:10:19Z","abstract_excerpt":"We study the dynamics of entanglement of two electron spins in two quantum dots, in which each electron is interacting with its nuclear spin environment. Focusing on the case of uncoupled dots, and starting from either Bell or Werner states of two qubits, we calculate the decay of entanglement due to the hyperfine interaction with the nuclei. We mostly focus on the regime of magnetic fields in which the bath-induced electron spin flips play a role, for example their presence leads to the appearance of entanglement sudden death at finite time for two qubits initialized in a Bell state. For thes"},"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":"1411.6269","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-11-23T17:10:19Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"ee86a32a60d6e5f1f17d365f09219cfeec68073c7b873af4f1fd2122f8a4540e","abstract_canon_sha256":"450bfdf271525431c5c3e7dba83d9870d462fddb197022555a045be35f59df9e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:41.078298Z","signature_b64":"2Mx3XRaDDSzNT5OGTh5I0HDXUDr/ZKZ9d3AnIb5ttg6XxMs5yjRCLxWU+MAW3DdnIDTT2UAT22ZObgTf2P0MAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ee759bbe69d90fab9d8be265fc1d912f49e0c645364f8df0d9f6962bf37ebb6","last_reissued_at":"2026-05-18T02:16:41.077453Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:41.077453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dynamics of entanglement of two electron spins interacting with nuclear spin baths in quantum dots","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Igor Bragar, {\\L}ukasz Cywi\\'nski","submitted_at":"2014-11-23T17:10:19Z","abstract_excerpt":"We study the dynamics of entanglement of two electron spins in two quantum dots, in which each electron is interacting with its nuclear spin environment. Focusing on the case of uncoupled dots, and starting from either Bell or Werner states of two qubits, we calculate the decay of entanglement due to the hyperfine interaction with the nuclei. We mostly focus on the regime of magnetic fields in which the bath-induced electron spin flips play a role, for example their presence leads to the appearance of entanglement sudden death at finite time for two qubits initialized in a Bell state. For thes"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.6269","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":"1411.6269","created_at":"2026-05-18T02:16:41.077579+00:00"},{"alias_kind":"arxiv_version","alias_value":"1411.6269v2","created_at":"2026-05-18T02:16:41.077579+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.6269","created_at":"2026-05-18T02:16:41.077579+00:00"},{"alias_kind":"pith_short_12","alias_value":"F3TVTO7GTWIP","created_at":"2026-05-18T12:28:28.263976+00:00"},{"alias_kind":"pith_short_16","alias_value":"F3TVTO7GTWIPVOOY","created_at":"2026-05-18T12:28:28.263976+00:00"},{"alias_kind":"pith_short_8","alias_value":"F3TVTO7G","created_at":"2026-05-18T12:28:28.263976+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/F3TVTO7GTWIPVOOYXYTF7QOZCL","json":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL.json","graph_json":"https://pith.science/api/pith-number/F3TVTO7GTWIPVOOYXYTF7QOZCL/graph.json","events_json":"https://pith.science/api/pith-number/F3TVTO7GTWIPVOOYXYTF7QOZCL/events.json","paper":"https://pith.science/paper/F3TVTO7G"},"agent_actions":{"view_html":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL","download_json":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL.json","view_paper":"https://pith.science/paper/F3TVTO7G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1411.6269&json=true","fetch_graph":"https://pith.science/api/pith-number/F3TVTO7GTWIPVOOYXYTF7QOZCL/graph.json","fetch_events":"https://pith.science/api/pith-number/F3TVTO7GTWIPVOOYXYTF7QOZCL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL/action/storage_attestation","attest_author":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL/action/author_attestation","sign_citation":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL/action/citation_signature","submit_replication":"https://pith.science/pith/F3TVTO7GTWIPVOOYXYTF7QOZCL/action/replication_record"}},"created_at":"2026-05-18T02:16:41.077579+00:00","updated_at":"2026-05-18T02:16:41.077579+00:00"}