{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T","short_pith_number":"pith:A37Z5Q5A","canonical_record":{"source":{"id":"1104.1210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-06T22:48:22Z","cross_cats_sorted":[],"title_canon_sha256":"624cd156b579fb07fcd9248e8e3d7451a6954bfc92ccd1d6b7ba7d93b8def9e2","abstract_canon_sha256":"09db26b8c8b4d90cbbb9c81a543cd9741b4831c9990da5c8cafa947b9553b847"},"schema_version":"1.0"},"canonical_sha256":"06ff9ec3a087b36f033058cad9a149d4d742f72dd2d66e601ebda1957a530604","source":{"kind":"arxiv","id":"1104.1210","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1210","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1210v2","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1210","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"pith_short_12","alias_value":"A37Z5Q5AQ6ZW","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"A37Z5Q5AQ6ZW6AZQ","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"A37Z5Q5A","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-06T22:48:22Z","cross_cats_sorted":[],"title_canon_sha256":"624cd156b579fb07fcd9248e8e3d7451a6954bfc92ccd1d6b7ba7d93b8def9e2","abstract_canon_sha256":"09db26b8c8b4d90cbbb9c81a543cd9741b4831c9990da5c8cafa947b9553b847"},"schema_version":"1.0"},"canonical_sha256":"06ff9ec3a087b36f033058cad9a149d4d742f72dd2d66e601ebda1957a530604","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:07.322193Z","signature_b64":"x5BmQrWEzvcRVFcWpi2zcHgbEUm/XZ0aO8Ulfpgauib/WcAeKRr8dhmMM3ikq2cJeFeJ7VZB9e9zxI4FkZpzCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06ff9ec3a087b36f033058cad9a149d4d742f72dd2d66e601ebda1957a530604","last_reissued_at":"2026-05-18T04:11:07.321696Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:07.321696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1210","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:11:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dirN3zVtK9lHAFSstVtTkDqwzepKVf2j8y+Of4xHAc/4ojg7bD02mxmAxfmC6WM3S9A1OOo4qggLphfNijJBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T18:36:58.623907Z"},"content_sha256":"8564e5cf0cb344d0f95b5a29bffd183b008162e8dbfa1288d50ddb73802cb844","schema_version":"1.0","event_id":"sha256:8564e5cf0cb344d0f95b5a29bffd183b008162e8dbfa1288d50ddb73802cb844"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Universal quantum computation with ordered spin-chain networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Daniel Loss, Yaroslav Tserkovnyak","submitted_at":"2011-04-06T22:48:22Z","abstract_excerpt":"It is shown that anisotropic spin chains with gapped bulk excitations and magnetically ordered ground states offer a promising platform for quantum computation, which bridges the conventional single-spin-based qubit concept with recently developed topological Majorana-based proposals. We show how to realize the single-qubit Hadamard, phase, and pi/8 gates as well as the two-qubit CNOT gate, which together form a fault-tolerant universal set of quantum gates. The gates are implemented by judiciously controlling Ising exchange and magnetic fields along a network of spin chains, with each individ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1210","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:11:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rgYY4dYq5JjRy45C/P1TnAce0v/0XqZEVLyY4k32tEvd5lEQVv0bDGB+HSLMXTjOhiOr3Y2d2PWRtkAAk4y/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T18:36:58.624522Z"},"content_sha256":"d15be2c877e201f2b93a901f5bb72fbbd1c972b991d7968138cdba16c27ce99d","schema_version":"1.0","event_id":"sha256:d15be2c877e201f2b93a901f5bb72fbbd1c972b991d7968138cdba16c27ce99d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/bundle.json","state_url":"https://pith.science/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T18:36:58Z","links":{"resolver":"https://pith.science/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T","bundle":"https://pith.science/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/bundle.json","state":"https://pith.science/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:A37Z5Q5AQ6ZW6AZQLDFNTIKJ2T","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":"09db26b8c8b4d90cbbb9c81a543cd9741b4831c9990da5c8cafa947b9553b847","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-06T22:48:22Z","title_canon_sha256":"624cd156b579fb07fcd9248e8e3d7451a6954bfc92ccd1d6b7ba7d93b8def9e2"},"schema_version":"1.0","source":{"id":"1104.1210","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1210","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1210v2","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1210","created_at":"2026-05-18T04:11:07Z"},{"alias_kind":"pith_short_12","alias_value":"A37Z5Q5AQ6ZW","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"A37Z5Q5AQ6ZW6AZQ","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"A37Z5Q5A","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:d15be2c877e201f2b93a901f5bb72fbbd1c972b991d7968138cdba16c27ce99d","target":"graph","created_at":"2026-05-18T04:11:07Z","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":"It is shown that anisotropic spin chains with gapped bulk excitations and magnetically ordered ground states offer a promising platform for quantum computation, which bridges the conventional single-spin-based qubit concept with recently developed topological Majorana-based proposals. We show how to realize the single-qubit Hadamard, phase, and pi/8 gates as well as the two-qubit CNOT gate, which together form a fault-tolerant universal set of quantum gates. The gates are implemented by judiciously controlling Ising exchange and magnetic fields along a network of spin chains, with each individ","authors_text":"Daniel Loss, Yaroslav Tserkovnyak","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-06T22:48:22Z","title":"Universal quantum computation with ordered spin-chain networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1210","kind":"arxiv","version":2},"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":"sha256:8564e5cf0cb344d0f95b5a29bffd183b008162e8dbfa1288d50ddb73802cb844","target":"record","created_at":"2026-05-18T04:11:07Z","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":"09db26b8c8b4d90cbbb9c81a543cd9741b4831c9990da5c8cafa947b9553b847","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-04-06T22:48:22Z","title_canon_sha256":"624cd156b579fb07fcd9248e8e3d7451a6954bfc92ccd1d6b7ba7d93b8def9e2"},"schema_version":"1.0","source":{"id":"1104.1210","kind":"arxiv","version":2}},"canonical_sha256":"06ff9ec3a087b36f033058cad9a149d4d742f72dd2d66e601ebda1957a530604","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06ff9ec3a087b36f033058cad9a149d4d742f72dd2d66e601ebda1957a530604","first_computed_at":"2026-05-18T04:11:07.321696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:07.321696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x5BmQrWEzvcRVFcWpi2zcHgbEUm/XZ0aO8Ulfpgauib/WcAeKRr8dhmMM3ikq2cJeFeJ7VZB9e9zxI4FkZpzCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:07.322193Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1210","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8564e5cf0cb344d0f95b5a29bffd183b008162e8dbfa1288d50ddb73802cb844","sha256:d15be2c877e201f2b93a901f5bb72fbbd1c972b991d7968138cdba16c27ce99d"],"state_sha256":"6779ff56782fb21908bab237fa09316be9a758d0a5ddf5156161f1b9336b4ffb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"whB8yhhErXt8l8GgcfZqApUZwKLHnW8aka92Yh2NMP7mQ4T/smwDnbiCEtdgOOqQsD8RLsVkPhtpK/8L6lXGCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T18:36:58.627750Z","bundle_sha256":"35ee7e82b03db201e8ba35d24b7e57c89cdfa39aafd52161cbdebabe4a4ba899"}}