{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RBYVN7YFH6TT5IXAK335QOKJ46","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":"0ca1e4cdfda328760f6779694df4050636954ba502719433b8d66b9320c3333d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-03T18:29:33Z","title_canon_sha256":"09027b42e0c4b1eafa74506b6e82d7a9e2e5c50edff44deb065e8101b1f5bfdd"},"schema_version":"1.0","source":{"id":"1505.00461","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00461","created_at":"2026-05-18T01:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00461v1","created_at":"2026-05-18T01:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00461","created_at":"2026-05-18T01:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"RBYVN7YFH6TT","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RBYVN7YFH6TT5IXA","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RBYVN7YF","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:f8c062f991ec433df2d6e7cf275686b4ed1b4af461224a7481d898ce6409b05d","target":"graph","created_at":"2026-05-18T01:14:18Z","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":"The set of Entanglement Saving (ES) quantum channels is introduced and characterized. These are completely positive, trace preserving transformations which when acting locally on a bipartite quantum system initially prepared into a maximally entangled configuration, preserve its entanglement even when applied an arbitrary number of times. In other words, a quantum channel $\\psi$ is said to be ES if its powers $\\psi^n$ are not entanglement-breaking for all integers $n$. We also characterize the properties of the Asymptotic Entanglement Saving (AES) maps. These form a proper subset of the ES cha","authors_text":"Ludovico Lami, Vittorio Giovannetti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-03T18:29:33Z","title":"Entanglement-Saving Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00461","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":"sha256:39a038a4e2ee8e72465205d2057aa2722a9a72bc27560497267cffaf852a0727","target":"record","created_at":"2026-05-18T01:14:18Z","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":"0ca1e4cdfda328760f6779694df4050636954ba502719433b8d66b9320c3333d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-03T18:29:33Z","title_canon_sha256":"09027b42e0c4b1eafa74506b6e82d7a9e2e5c50edff44deb065e8101b1f5bfdd"},"schema_version":"1.0","source":{"id":"1505.00461","kind":"arxiv","version":1}},"canonical_sha256":"887156ff053fa73ea2e056f7d83949e7b70e61bd7907e7c0fb110451a5f6b85c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"887156ff053fa73ea2e056f7d83949e7b70e61bd7907e7c0fb110451a5f6b85c","first_computed_at":"2026-05-18T01:14:18.147069Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:18.147069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K7PaJr0uISo4IhVsagA1+5wDIrh01fHq1hPV3ESExXj1MrxVFS6uJnRWteIMZ8dNcvmKgNrgH5zxcY2yRxNHCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:18.147675Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.00461","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39a038a4e2ee8e72465205d2057aa2722a9a72bc27560497267cffaf852a0727","sha256:f8c062f991ec433df2d6e7cf275686b4ed1b4af461224a7481d898ce6409b05d"],"state_sha256":"95babc27c81a453c056a36bb29da5d4cdee1e1b272646571d5f433d6004e0f2c"}