{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:APEC2AORID2N57IJLLKLEUSSUH","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":"3040be5268e8fe9a3832263f1dd89e48d62707e590c55d736cca55a2294f70dd","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2001-03-02T04:25:06Z","title_canon_sha256":"29a31533902ba9542c8571b2b79b64c864b9e538be5588f6bb6638186f0856f8"},"schema_version":"1.0","source":{"id":"quant-ph/0103005","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0103005","created_at":"2026-07-04T16:28:55Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0103005v1","created_at":"2026-07-04T16:28:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0103005","created_at":"2026-07-04T16:28:55Z"},{"alias_kind":"pith_short_12","alias_value":"APEC2AORID2N","created_at":"2026-07-04T16:28:55Z"},{"alias_kind":"pith_short_16","alias_value":"APEC2AORID2N57IJ","created_at":"2026-07-04T16:28:55Z"},{"alias_kind":"pith_short_8","alias_value":"APEC2AOR","created_at":"2026-07-04T16:28:55Z"}],"graph_snapshots":[{"event_id":"sha256:9e59f790a27c2b40c472f49783d0b7924b0843ed6c30196457d5b44045da6e14","target":"graph","created_at":"2026-07-04T16:28:55Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/quant-ph/0103005/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"There has been much discussion recently regarding entanglement transformations in terms of local filtering operations and whether the optimal entanglement for an arbitrary two-qubit state could be realised. We introduce an experimentally realisable scheme for manipulating the entanglement of an arbitrary state of two polarisation entangled qubits. This scheme is then used to provide some perspective to the mathematical concepts inherent in this field with respect to a laboratory environment. Specifically, we look at how to extract enhanced entanglement from systems with a fixed rank and in the","authors_text":"R. T. Thew, W. J. Munro","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2001-03-02T04:25:06Z","title":"Mixed State Entanglement: Manipulating Polarisation-Entangled Photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0103005","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":"sha256:9653c96326c3a67132adff74b27b73a207df28296b48f856a314b8a50dbc78d6","target":"record","created_at":"2026-07-04T16:28:55Z","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":"3040be5268e8fe9a3832263f1dd89e48d62707e590c55d736cca55a2294f70dd","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2001-03-02T04:25:06Z","title_canon_sha256":"29a31533902ba9542c8571b2b79b64c864b9e538be5588f6bb6638186f0856f8"},"schema_version":"1.0","source":{"id":"quant-ph/0103005","kind":"arxiv","version":1}},"canonical_sha256":"03c82d01d140f4defd095ad4b25252a1f4f4a72f0cac455b3b9fa34e757b6af0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03c82d01d140f4defd095ad4b25252a1f4f4a72f0cac455b3b9fa34e757b6af0","first_computed_at":"2026-07-04T16:28:55.207667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:28:55.207667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"16E5ecbZeyzvMFOjbwU/CSIlFzIMvqRO5+/srCQ6jZ6oype6HY0iWgNTH/lC9dh8C4qzPsj/2mbJTLVrhyCvBw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:28:55.208080Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0103005","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9653c96326c3a67132adff74b27b73a207df28296b48f856a314b8a50dbc78d6","sha256:9e59f790a27c2b40c472f49783d0b7924b0843ed6c30196457d5b44045da6e14"],"state_sha256":"b47bdfe896686808082a0efef6c6d36f111500fabb0beb286e5f1427f44c1e8b"}