{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ZT4BR63LKZWKDYZMVGU263NJ2W","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":"d2f05479a3e929fba2ecb1383e261f5b8f2e7e030730f05fec3a50495fba5a0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-28T00:16:27Z","title_canon_sha256":"672d7a7db24f8053c0a8f165da0abebe878d2c71db1dcbc2b79b603b082ac2ea"},"schema_version":"1.0","source":{"id":"2605.29197","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.29197","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"arxiv_version","alias_value":"2605.29197v1","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29197","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_12","alias_value":"ZT4BR63LKZWK","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_16","alias_value":"ZT4BR63LKZWKDYZM","created_at":"2026-05-29T01:05:23Z"},{"alias_kind":"pith_short_8","alias_value":"ZT4BR63L","created_at":"2026-05-29T01:05:23Z"}],"graph_snapshots":[{"event_id":"sha256:1cd2d26c6d1f3d0ebad00ed1bf92246533e6d8e4e867c553e36edcab736b22b3","target":"graph","created_at":"2026-05-29T01:05:23Z","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/2605.29197/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"States of sufficiently low purity are separable and cannot be entangled by unital (purity-non-generating) operations. Since high-purity states are experimentally demanding, it is natural to ask how much purity a state must possess to enable entanglement generation. Absolutely separable states remain separable under all deterministic unital channels, and so cannot deterministically generate entanglement in this setting. We show, however, that some absolutely separable states can generate entanglement via probabilistic protocols that do not produce purity. This motivates the study of states that","authors_text":"Dagmar Bru{\\ss}, Hermann Kampermann, Justus Neumann, Pedro Barrios Hita, Tulja Varun Kondra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-28T00:16:27Z","title":"Fundamental limitations on entanglement extraction from purity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29197","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:cb1aa9965e30de762ad0e1d1d5975cc5dfc83314236d44ffdecc687e7d0c111d","target":"record","created_at":"2026-05-29T01:05:23Z","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":"d2f05479a3e929fba2ecb1383e261f5b8f2e7e030730f05fec3a50495fba5a0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-28T00:16:27Z","title_canon_sha256":"672d7a7db24f8053c0a8f165da0abebe878d2c71db1dcbc2b79b603b082ac2ea"},"schema_version":"1.0","source":{"id":"2605.29197","kind":"arxiv","version":1}},"canonical_sha256":"ccf818fb6b566ca1e32ca9a9af6da9d5910309f07c657140f7588319bbe6fd5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ccf818fb6b566ca1e32ca9a9af6da9d5910309f07c657140f7588319bbe6fd5a","first_computed_at":"2026-05-29T01:05:23.819799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-29T01:05:23.819799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6qSrdlWztMd1lnksIX04ru/eCqQhrkgyIp6bJs2GRM2BZG+To3HdCo7K/2B8xmNkj1+4scj1+adNfoZhR9fPCw==","signature_status":"signed_v1","signed_at":"2026-05-29T01:05:23.820825Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.29197","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb1aa9965e30de762ad0e1d1d5975cc5dfc83314236d44ffdecc687e7d0c111d","sha256:1cd2d26c6d1f3d0ebad00ed1bf92246533e6d8e4e867c553e36edcab736b22b3"],"state_sha256":"4428d621d1b438e55de9641db1826ebb8d87fdd9ced6e3f78dc54f9b0b12e887"}