{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:MC65KF672F745HSPEWOW52VDCH","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":"06dca97db9d06de9cc4cf57e8df030c1209fdea4bf422b9a4340fd1a17725439","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-13T15:23:03Z","title_canon_sha256":"9bc51f8f4d5fa8d236bd1e0f594d0f635bd4b18d1f55d6e32f087ee2a56a615f"},"schema_version":"1.0","source":{"id":"1502.04024","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04024","created_at":"2026-05-18T02:27:06Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04024v1","created_at":"2026-05-18T02:27:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04024","created_at":"2026-05-18T02:27:06Z"},{"alias_kind":"pith_short_12","alias_value":"MC65KF672F74","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MC65KF672F745HSP","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MC65KF67","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:8523ffd720f8d01b1a24b14bec72273a3c3a36c316996d130e332a6bcb189497","target":"graph","created_at":"2026-05-18T02:27:06Z","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":"Weak measurement is a new way to manipulate and control quantum systems. Different from projection measurement, weak measurement only makes a small change in status. Applying weak measurement to quantum discord, Singh and Pati proposed a new kind of quantum correlations called \"super quantum discord (SQD)\" [Annals of Physics \\textbf{343},141(2014)]. Unfortunately, the super quantum discord is also difficult to calculate. There are only few explicit formulae about SQD. We derive an analytical formulae of SQD for general X-type two-qubit states, which surpass the conclusion for Werner states and","authors_text":"Shaoming Fei, Tao Li, Teng Ma, Yaokun Wang, Zhixi Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-13T15:23:03Z","title":"Super quantum discord for X-type states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04024","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:dc99791d5f86c2808099f27bcf04f698168754c17ea639b60cb99ac99be253de","target":"record","created_at":"2026-05-18T02:27:06Z","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":"06dca97db9d06de9cc4cf57e8df030c1209fdea4bf422b9a4340fd1a17725439","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-13T15:23:03Z","title_canon_sha256":"9bc51f8f4d5fa8d236bd1e0f594d0f635bd4b18d1f55d6e32f087ee2a56a615f"},"schema_version":"1.0","source":{"id":"1502.04024","kind":"arxiv","version":1}},"canonical_sha256":"60bdd517dfd17fce9e4f259d6eeaa311cadc8328b0dcab9aa05f9193e8e14118","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60bdd517dfd17fce9e4f259d6eeaa311cadc8328b0dcab9aa05f9193e8e14118","first_computed_at":"2026-05-18T02:27:06.707176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:06.707176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JLx111q3EYNFd1rXOb6munOBoRc7wCiSq4KvTsxU8mYyMztooHEFet2dT8EYtVKwm7uFezYZ1+ygIsqloQINDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:06.707756Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04024","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc99791d5f86c2808099f27bcf04f698168754c17ea639b60cb99ac99be253de","sha256:8523ffd720f8d01b1a24b14bec72273a3c3a36c316996d130e332a6bcb189497"],"state_sha256":"aa0cea640041374b3cc7d996ef9a291b34bd7d812de92f9b19bb6b88be508c2a"}