{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:J2VOZ6GB2NDP7ILSAXACJA2A6F","short_pith_number":"pith:J2VOZ6GB","schema_version":"1.0","canonical_sha256":"4eaaecf8c1d346ffa17205c0248340f1737de81e4e34f7918a064b3b312a923b","source":{"kind":"arxiv","id":"1304.3632","version":1},"attestation_state":"computed","paper":{"title":"Generation of quantum discord between ionic qubits via noisy processes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. P. Lanyon, C. F. Roos, C. Hempel, M. Gessner, P. Jurcevic, R. Blatt, V. Vedral","submitted_at":"2013-04-12T13:22:42Z","abstract_excerpt":"Quantum systems in mixed states can be unentangled and yet still correlated in a way that is not possible for classical systems. These correlations can be quantified by the quantum discord and might provide a resource for certain mixed-state quantum information processing tasks. Here we report on the generation of discordant states of two trapped atomic ions via Markovian decoherence processes. While entanglement is strictly non-increasing under such operations, discord can be generated in various forms. Firstly we show that, starting from two classically correlated qubits, it is possible to g"},"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":"1304.3632","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-12T13:22:42Z","cross_cats_sorted":[],"title_canon_sha256":"d2d1034e33492d0164b70268905dd2fdfdda79b4521c8272589401e0f56f68a8","abstract_canon_sha256":"f34d26b2c4381608603307334428618150424cd0ca28df763bbe4ebda693b194"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:51:15.146474Z","signature_b64":"rKO2LqokCLduRLU/pVPuKaC8Rb0mkH+IUYLUsyNErnhF9e/40ffLSJDPit12LsaU9zEqxL+M/2HAl4prf3NABQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4eaaecf8c1d346ffa17205c0248340f1737de81e4e34f7918a064b3b312a923b","last_reissued_at":"2026-05-18T02:51:15.145969Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:51:15.145969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Generation of quantum discord between ionic qubits via noisy processes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. P. Lanyon, C. F. Roos, C. Hempel, M. Gessner, P. Jurcevic, R. Blatt, V. Vedral","submitted_at":"2013-04-12T13:22:42Z","abstract_excerpt":"Quantum systems in mixed states can be unentangled and yet still correlated in a way that is not possible for classical systems. These correlations can be quantified by the quantum discord and might provide a resource for certain mixed-state quantum information processing tasks. Here we report on the generation of discordant states of two trapped atomic ions via Markovian decoherence processes. While entanglement is strictly non-increasing under such operations, discord can be generated in various forms. Firstly we show that, starting from two classically correlated qubits, it is possible to g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.3632","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":"1304.3632","created_at":"2026-05-18T02:51:15.146051+00:00"},{"alias_kind":"arxiv_version","alias_value":"1304.3632v1","created_at":"2026-05-18T02:51:15.146051+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.3632","created_at":"2026-05-18T02:51:15.146051+00:00"},{"alias_kind":"pith_short_12","alias_value":"J2VOZ6GB2NDP","created_at":"2026-05-18T12:27:49.015174+00:00"},{"alias_kind":"pith_short_16","alias_value":"J2VOZ6GB2NDP7ILS","created_at":"2026-05-18T12:27:49.015174+00:00"},{"alias_kind":"pith_short_8","alias_value":"J2VOZ6GB","created_at":"2026-05-18T12:27:49.015174+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/J2VOZ6GB2NDP7ILSAXACJA2A6F","json":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F.json","graph_json":"https://pith.science/api/pith-number/J2VOZ6GB2NDP7ILSAXACJA2A6F/graph.json","events_json":"https://pith.science/api/pith-number/J2VOZ6GB2NDP7ILSAXACJA2A6F/events.json","paper":"https://pith.science/paper/J2VOZ6GB"},"agent_actions":{"view_html":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F","download_json":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F.json","view_paper":"https://pith.science/paper/J2VOZ6GB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1304.3632&json=true","fetch_graph":"https://pith.science/api/pith-number/J2VOZ6GB2NDP7ILSAXACJA2A6F/graph.json","fetch_events":"https://pith.science/api/pith-number/J2VOZ6GB2NDP7ILSAXACJA2A6F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F/action/storage_attestation","attest_author":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F/action/author_attestation","sign_citation":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F/action/citation_signature","submit_replication":"https://pith.science/pith/J2VOZ6GB2NDP7ILSAXACJA2A6F/action/replication_record"}},"created_at":"2026-05-18T02:51:15.146051+00:00","updated_at":"2026-05-18T02:51:15.146051+00:00"}