{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:AYDOUEJAL3AVM4NTRW2MHALYNN","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":"6aa0cbdd181ee748e764ff131ae84f909b687d1f4eceb976d4923792e5efee93","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-10-30T22:09:26Z","title_canon_sha256":"1881ee6cf500531b22323b7f3c1ecc1ff82ed9ad88358ae0c3faebf8e643a87d"},"schema_version":"1.0","source":{"id":"1511.00038","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.00038","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"arxiv_version","alias_value":"1511.00038v1","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.00038","created_at":"2026-05-18T01:21:46Z"},{"alias_kind":"pith_short_12","alias_value":"AYDOUEJAL3AV","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"AYDOUEJAL3AVM4NT","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"AYDOUEJA","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:dd8e5d0444d17383a9daafcef484e57376c886658635100ad6ed2db48e91422f","target":"graph","created_at":"2026-05-18T01:21:46Z","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 ability to transfer quantum information from one location to another with high fidelity is of central importance to quantum information science. Unfortunately for the simplest system of a uniform chain (a spin chain or a particle in a one-dimensional lattice), the state transfer time grows exponentially in the chain length $N$ at fixed fidelity. In this work we show that the addition of an impurity near each endpoint, coupled to the uniform chain with strength $w$, is sufficient to ensure efficient and high-fidelity state transfer. An eigenstate localized in the vicinity of the impurity ca","authors_text":"David L. Feder, Robert Mereau, Xining Chen","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-10-30T22:09:26Z","title":"Asymptotically perfect efficient quantum state transfer across uniform chains with two impurities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.00038","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":"sha256:24313f6ca9b3dccd3e7db2d6b1e8e970c6ecf544ef7f500c0393b40f065455ff","target":"record","created_at":"2026-05-18T01:21:46Z","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":"6aa0cbdd181ee748e764ff131ae84f909b687d1f4eceb976d4923792e5efee93","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-10-30T22:09:26Z","title_canon_sha256":"1881ee6cf500531b22323b7f3c1ecc1ff82ed9ad88358ae0c3faebf8e643a87d"},"schema_version":"1.0","source":{"id":"1511.00038","kind":"arxiv","version":1}},"canonical_sha256":"0606ea11205ec15671b38db4c381786b7ba1b58edfa2b1a3f6f860336a9cd408","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0606ea11205ec15671b38db4c381786b7ba1b58edfa2b1a3f6f860336a9cd408","first_computed_at":"2026-05-18T01:21:46.989098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:46.989098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/ngeHcY2lZWUVKmbbpjPINg/GXMccULmqwkZFVm6Q7vK+FUh+jGWI2PEyDP+3MMJTkqkDoeH37uakz4docA8DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:46.989687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.00038","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24313f6ca9b3dccd3e7db2d6b1e8e970c6ecf544ef7f500c0393b40f065455ff","sha256:dd8e5d0444d17383a9daafcef484e57376c886658635100ad6ed2db48e91422f"],"state_sha256":"f2ff68e383500095acb53bc24e60b546e321af3d67777305546f7374293b86b4"}