{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:LBUX43BVHEP3Q622E6S4EJWEZS","short_pith_number":"pith:LBUX43BV","canonical_record":{"source":{"id":"1107.4457","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-07-22T09:12:28Z","cross_cats_sorted":[],"title_canon_sha256":"2fb438e87764b62ba2a358ab90d3159ac7183b77e2458d462645ff925f3d8cda","abstract_canon_sha256":"78164e69c6fede2a9b425599ce5677702d0f8e6a72b6287cdebf1fdcab52315b"},"schema_version":"1.0"},"canonical_sha256":"58697e6c35391fb87b5a27a5c226c4cc9e9390c64fcfc9fbb6c0a3be940d3a68","source":{"kind":"arxiv","id":"1107.4457","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4457","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4457v1","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4457","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"pith_short_12","alias_value":"LBUX43BVHEP3","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"LBUX43BVHEP3Q622","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"LBUX43BV","created_at":"2026-05-18T12:26:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:LBUX43BVHEP3Q622E6S4EJWEZS","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4457","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-07-22T09:12:28Z","cross_cats_sorted":[],"title_canon_sha256":"2fb438e87764b62ba2a358ab90d3159ac7183b77e2458d462645ff925f3d8cda","abstract_canon_sha256":"78164e69c6fede2a9b425599ce5677702d0f8e6a72b6287cdebf1fdcab52315b"},"schema_version":"1.0"},"canonical_sha256":"58697e6c35391fb87b5a27a5c226c4cc9e9390c64fcfc9fbb6c0a3be940d3a68","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:04.012797Z","signature_b64":"3nXR6y7bmKuTx5UwiEou9fgOCfchTvDgH0uxlqH/L7ITC/RxJT7mkZJOIXeTSuHhKhU6Oe4HJXNsXnNlrXEeAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"58697e6c35391fb87b5a27a5c226c4cc9e9390c64fcfc9fbb6c0a3be940d3a68","last_reissued_at":"2026-05-18T04:17:04.012121Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:04.012121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4457","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:17:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WS7Y3Cmvz2rD+fJ+9czahp5ICqmsw76ETQZ/RmcBD3grdYB4EPQD2uKgO4QDkOsVrWf3k9pyhiktwgJsm5L+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:11:52.174969Z"},"content_sha256":"d114a95f837c808f72d7c0120cf6586657461722d33814de19674eb42b148dc0","schema_version":"1.0","event_id":"sha256:d114a95f837c808f72d7c0120cf6586657461722d33814de19674eb42b148dc0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:LBUX43BVHEP3Q622E6S4EJWEZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Discord: A Dynamic Approach in Geometric Picture","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Fengjian Jiang, Jiangfeng Du, Mingjun Shi","submitted_at":"2011-07-22T09:12:28Z","abstract_excerpt":"We present a dynamic approach to study the quantum discord and classical correlation. By local filtering operation, the evaluation of quantum discord is closely related to quantum channel and channel capacity. As a consequence, the traditional optimization over horizontal-or-vertical von Neumann measurements is replaced by that over horizontal-and-vertical three-element POVM measurement, from which more rigorous results of quantum discord are obtained."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4457","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:17:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8JJhtSkyfSOt36YRiDw+rOFnEl9aUoqzJuPjcWJ4MISnvmVpd53lB40V1s4qav/OV7xewjlDsM2eG355g2ZsCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:11:52.175354Z"},"content_sha256":"890248736f005146f1c46d01bc28d62acc4cdfa53470ef9b5bddb5a1d24a9c01","schema_version":"1.0","event_id":"sha256:890248736f005146f1c46d01bc28d62acc4cdfa53470ef9b5bddb5a1d24a9c01"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LBUX43BVHEP3Q622E6S4EJWEZS/bundle.json","state_url":"https://pith.science/pith/LBUX43BVHEP3Q622E6S4EJWEZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LBUX43BVHEP3Q622E6S4EJWEZS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T17:11:52Z","links":{"resolver":"https://pith.science/pith/LBUX43BVHEP3Q622E6S4EJWEZS","bundle":"https://pith.science/pith/LBUX43BVHEP3Q622E6S4EJWEZS/bundle.json","state":"https://pith.science/pith/LBUX43BVHEP3Q622E6S4EJWEZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LBUX43BVHEP3Q622E6S4EJWEZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:LBUX43BVHEP3Q622E6S4EJWEZS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"78164e69c6fede2a9b425599ce5677702d0f8e6a72b6287cdebf1fdcab52315b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-07-22T09:12:28Z","title_canon_sha256":"2fb438e87764b62ba2a358ab90d3159ac7183b77e2458d462645ff925f3d8cda"},"schema_version":"1.0","source":{"id":"1107.4457","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4457","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4457v1","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4457","created_at":"2026-05-18T04:17:04Z"},{"alias_kind":"pith_short_12","alias_value":"LBUX43BVHEP3","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"LBUX43BVHEP3Q622","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"LBUX43BV","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:890248736f005146f1c46d01bc28d62acc4cdfa53470ef9b5bddb5a1d24a9c01","target":"graph","created_at":"2026-05-18T04:17:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a dynamic approach to study the quantum discord and classical correlation. By local filtering operation, the evaluation of quantum discord is closely related to quantum channel and channel capacity. As a consequence, the traditional optimization over horizontal-or-vertical von Neumann measurements is replaced by that over horizontal-and-vertical three-element POVM measurement, from which more rigorous results of quantum discord are obtained.","authors_text":"Fengjian Jiang, Jiangfeng Du, Mingjun Shi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-07-22T09:12:28Z","title":"Quantum Discord: A Dynamic Approach in Geometric Picture"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4457","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d114a95f837c808f72d7c0120cf6586657461722d33814de19674eb42b148dc0","target":"record","created_at":"2026-05-18T04:17:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"78164e69c6fede2a9b425599ce5677702d0f8e6a72b6287cdebf1fdcab52315b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-07-22T09:12:28Z","title_canon_sha256":"2fb438e87764b62ba2a358ab90d3159ac7183b77e2458d462645ff925f3d8cda"},"schema_version":"1.0","source":{"id":"1107.4457","kind":"arxiv","version":1}},"canonical_sha256":"58697e6c35391fb87b5a27a5c226c4cc9e9390c64fcfc9fbb6c0a3be940d3a68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58697e6c35391fb87b5a27a5c226c4cc9e9390c64fcfc9fbb6c0a3be940d3a68","first_computed_at":"2026-05-18T04:17:04.012121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:04.012121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3nXR6y7bmKuTx5UwiEou9fgOCfchTvDgH0uxlqH/L7ITC/RxJT7mkZJOIXeTSuHhKhU6Oe4HJXNsXnNlrXEeAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:04.012797Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4457","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d114a95f837c808f72d7c0120cf6586657461722d33814de19674eb42b148dc0","sha256:890248736f005146f1c46d01bc28d62acc4cdfa53470ef9b5bddb5a1d24a9c01"],"state_sha256":"bf1317d86ba2bfa90b9e54ee9ab82a369a25dec8f5d73d8e108063b0a2baa826"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EuMg+d+8MdzQoJrq7RUzC61cVujPfm2vGOMozFaATCFN/D8Ga7A9JM+Q4s0VrDkrJi4H/wZQ1eM/yru/jcI6AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:11:52.177416Z","bundle_sha256":"813b4362520ef968f4186623028a2dba24f24fcbc010ef9eca4583f3bc346473"}}