{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:UULV7XYEDNHRZMFQACDAF5RRQ4","short_pith_number":"pith:UULV7XYE","schema_version":"1.0","canonical_sha256":"a5175fdf041b4f1cb0b0008602f6318730cbe65fa960398c570e1a4b07a392fe","source":{"kind":"arxiv","id":"1101.2568","version":2},"attestation_state":"computed","paper":{"title":"Dynamics of quantum discord in the purification process","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Lin Chen, Ming Yang, Wei Song, Zhuo-Liang Cao","submitted_at":"2011-01-13T14:08:28Z","abstract_excerpt":"We investigate the dynamics of quantum discord during the purification process. In the case of Werner states, it is shown that quantum discord is increased after a round of purification protocol. Furthermore, quantum mutual information and classical correlation is also increased during this process.Wealso give an analytic expression for a class of higher dimensional states which have additive quantum discord."},"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":"1101.2568","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"quant-ph","submitted_at":"2011-01-13T14:08:28Z","cross_cats_sorted":[],"title_canon_sha256":"e2f22f627962eff31c1aa054b71c44ebc3c2f19122810ac773178a14248a285d","abstract_canon_sha256":"1e9fc99651114f193fa4527fdfc5a43e4dbb23784d03aac334ae76f9b75f95a8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:05:19.170348Z","signature_b64":"2fX0eaoP8fA6qe+Ly/OfoYmSeiJMm0Ydpjw53c5anGYfnFBiRgxjs+v2mb2Arf7fbnYBslfql4KGIecTgDSbAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5175fdf041b4f1cb0b0008602f6318730cbe65fa960398c570e1a4b07a392fe","last_reissued_at":"2026-05-18T03:05:19.169809Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:05:19.169809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dynamics of quantum discord in the purification process","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Lin Chen, Ming Yang, Wei Song, Zhuo-Liang Cao","submitted_at":"2011-01-13T14:08:28Z","abstract_excerpt":"We investigate the dynamics of quantum discord during the purification process. In the case of Werner states, it is shown that quantum discord is increased after a round of purification protocol. Furthermore, quantum mutual information and classical correlation is also increased during this process.Wealso give an analytic expression for a class of higher dimensional states which have additive quantum discord."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2568","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":"1101.2568","created_at":"2026-05-18T03:05:19.169899+00:00"},{"alias_kind":"arxiv_version","alias_value":"1101.2568v2","created_at":"2026-05-18T03:05:19.169899+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2568","created_at":"2026-05-18T03:05:19.169899+00:00"},{"alias_kind":"pith_short_12","alias_value":"UULV7XYEDNHR","created_at":"2026-05-18T12:26:42.757692+00:00"},{"alias_kind":"pith_short_16","alias_value":"UULV7XYEDNHRZMFQ","created_at":"2026-05-18T12:26:42.757692+00:00"},{"alias_kind":"pith_short_8","alias_value":"UULV7XYE","created_at":"2026-05-18T12:26:42.757692+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/UULV7XYEDNHRZMFQACDAF5RRQ4","json":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4.json","graph_json":"https://pith.science/api/pith-number/UULV7XYEDNHRZMFQACDAF5RRQ4/graph.json","events_json":"https://pith.science/api/pith-number/UULV7XYEDNHRZMFQACDAF5RRQ4/events.json","paper":"https://pith.science/paper/UULV7XYE"},"agent_actions":{"view_html":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4","download_json":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4.json","view_paper":"https://pith.science/paper/UULV7XYE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1101.2568&json=true","fetch_graph":"https://pith.science/api/pith-number/UULV7XYEDNHRZMFQACDAF5RRQ4/graph.json","fetch_events":"https://pith.science/api/pith-number/UULV7XYEDNHRZMFQACDAF5RRQ4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4/action/storage_attestation","attest_author":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4/action/author_attestation","sign_citation":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4/action/citation_signature","submit_replication":"https://pith.science/pith/UULV7XYEDNHRZMFQACDAF5RRQ4/action/replication_record"}},"created_at":"2026-05-18T03:05:19.169899+00:00","updated_at":"2026-05-18T03:05:19.169899+00:00"}