{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:ROCQCAB5F6DZ5LBFXJGZF5VGOJ","short_pith_number":"pith:ROCQCAB5","schema_version":"1.0","canonical_sha256":"8b8501003d2f879eac25ba4d92f6a67253ef55068f1d608bbcb1dfcf61faecd2","source":{"kind":"arxiv","id":"quant-ph/0409134","version":3},"attestation_state":"computed","paper":{"title":"Quantum Communication Through a Spin-Ring with Twisted Boundary Conditions","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B.-Q. Jin, S. Bose, V. E. Korepin","submitted_at":"2004-09-20T18:36:49Z","abstract_excerpt":"We investigate quantum communication between the sites of a spin-ring with twisted boundary conditions. Such boundary conditions can be achieved by a flux through the ring. We find that a non-zero twist can improve communication through finite odd numbered rings and enable high fidelity multi-party quantum communication through spin rings (working near perfectly for rings of 5 and 7 spins). We show that in certain cases, the twist results in the complete blockage of quantum information flow to a certain site of the ring. This effect can be exploited to interface and entangle a flux qubit and a"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"quant-ph/0409134","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-09-20T18:36:49Z","cross_cats_sorted":[],"title_canon_sha256":"b5f5011c5840269197974c2a9e4e852175fa78c9bed5bb2d0bc29bcb24fbcdf7","abstract_canon_sha256":"5df6bfef1891400ccca89ccaba12f822b7a0aca40487dc9241d46048a0a2d4ea"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:50:24.604355Z","signature_b64":"gM8dRNBsLSKxO5V2uUcUbh74/1rvUiyiUDTrtoaQGdq++zbyLJZ9O/mwYCCWEdWhEJ07o9JIu0cdOB0NGDAsCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b8501003d2f879eac25ba4d92f6a67253ef55068f1d608bbcb1dfcf61faecd2","last_reissued_at":"2026-07-04T16:50:24.603972Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:50:24.603972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum Communication Through a Spin-Ring with Twisted Boundary Conditions","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B.-Q. Jin, S. Bose, V. E. Korepin","submitted_at":"2004-09-20T18:36:49Z","abstract_excerpt":"We investigate quantum communication between the sites of a spin-ring with twisted boundary conditions. Such boundary conditions can be achieved by a flux through the ring. We find that a non-zero twist can improve communication through finite odd numbered rings and enable high fidelity multi-party quantum communication through spin rings (working near perfectly for rings of 5 and 7 spins). We show that in certain cases, the twist results in the complete blockage of quantum information flow to a certain site of the ring. This effect can be exploited to interface and entangle a flux qubit and a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0409134","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/quant-ph/0409134/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0409134","created_at":"2026-07-04T16:50:24.604034+00:00"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0409134v3","created_at":"2026-07-04T16:50:24.604034+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0409134","created_at":"2026-07-04T16:50:24.604034+00:00"},{"alias_kind":"pith_short_12","alias_value":"ROCQCAB5F6DZ","created_at":"2026-07-04T16:50:24.604034+00:00"},{"alias_kind":"pith_short_16","alias_value":"ROCQCAB5F6DZ5LBF","created_at":"2026-07-04T16:50:24.604034+00:00"},{"alias_kind":"pith_short_8","alias_value":"ROCQCAB5","created_at":"2026-07-04T16:50:24.604034+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ","json":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ.json","graph_json":"https://pith.science/api/pith-number/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/graph.json","events_json":"https://pith.science/api/pith-number/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/events.json","paper":"https://pith.science/paper/ROCQCAB5"},"agent_actions":{"view_html":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ","download_json":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ.json","view_paper":"https://pith.science/paper/ROCQCAB5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=quant-ph/0409134&json=true","fetch_graph":"https://pith.science/api/pith-number/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/graph.json","fetch_events":"https://pith.science/api/pith-number/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/action/storage_attestation","attest_author":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/action/author_attestation","sign_citation":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/action/citation_signature","submit_replication":"https://pith.science/pith/ROCQCAB5F6DZ5LBFXJGZF5VGOJ/action/replication_record"}},"created_at":"2026-07-04T16:50:24.604034+00:00","updated_at":"2026-07-04T16:50:24.604034+00:00"}