{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JTAF55OQN5HGZYVDASQ652P2SF","short_pith_number":"pith:JTAF55OQ","canonical_record":{"source":{"id":"1405.4446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-17T23:28:52Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"37f4dd19a9e1d4524c4fdc8388666eae21136e6deea032560ee2136830b8c336","abstract_canon_sha256":"dc5207b83197feea6fb2a4ce1f7ac44ddba8ed2c39d4ee4259bc7d5bf7303bba"},"schema_version":"1.0"},"canonical_sha256":"4cc05ef5d06f4e6ce2a304a1eee9fa915cd47dfe13a7062d2fd7654c717edbf7","source":{"kind":"arxiv","id":"1405.4446","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.4446","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"arxiv_version","alias_value":"1405.4446v1","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.4446","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"pith_short_12","alias_value":"JTAF55OQN5HG","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JTAF55OQN5HGZYVD","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JTAF55OQ","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JTAF55OQN5HGZYVDASQ652P2SF","target":"record","payload":{"canonical_record":{"source":{"id":"1405.4446","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-17T23:28:52Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"37f4dd19a9e1d4524c4fdc8388666eae21136e6deea032560ee2136830b8c336","abstract_canon_sha256":"dc5207b83197feea6fb2a4ce1f7ac44ddba8ed2c39d4ee4259bc7d5bf7303bba"},"schema_version":"1.0"},"canonical_sha256":"4cc05ef5d06f4e6ce2a304a1eee9fa915cd47dfe13a7062d2fd7654c717edbf7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:51:40.849377Z","signature_b64":"gv8hZiA4bUpazPxXotxnpORecVrugq4OoXQeKk1CnRCxQMQosxocCdabfTeXojXe7VVLq56DYEdJfgwv5TN6DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4cc05ef5d06f4e6ce2a304a1eee9fa915cd47dfe13a7062d2fd7654c717edbf7","last_reissued_at":"2026-05-18T02:51:40.848814Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:51:40.848814Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.4446","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:51:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fxvr5SmyHn20I8YiDf52GSvkfWSvtPzjOJblpO0kGa1kF8tiM7RmHetSY3fGlMhZXPhaTVfQatct/W5b3s4ODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:05:05.525869Z"},"content_sha256":"81e44a125d34d5f6a5c29c339c7e1db3d3f42be31d8aaad03fd89c2ed4719959","schema_version":"1.0","event_id":"sha256:81e44a125d34d5f6a5c29c339c7e1db3d3f42be31d8aaad03fd89c2ed4719959"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JTAF55OQN5HGZYVDASQ652P2SF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A protected vortex exciton qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"Suvabrata De, Tim Spiller","submitted_at":"2014-05-17T23:28:52Z","abstract_excerpt":"We propose a protected qubit which is `dual' to a suggestion of a superconducting current mirror qubit [A. Kitaev, arXiv:0609441 (2006)]. Our construction can be regarded as the magnetic analogue of Kitaev's proposal: it inherits the intrinsic fault-tolerance of the current mirror qubit, but may perform better than it in the laboratory, since magnetic noise is generally less of a problem than electric noise. We adapt the scheme for universal fault-tolerant quantum computation proposed by Kitaev to our construction."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.4446","kind":"arxiv","version":1},"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":"2026-05-18T02:51:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6eWMg9MWvvyjBlRqUF5LfsrulFTauJhW55rPQd+vemitqe+rx/Y2SwaSSKRjoXfFm5s+JMjzHNlul71CLylSCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:05:05.526623Z"},"content_sha256":"8032ead5e47489879ed8b84ed61256a093a647224e18e9eae1b7fe63765c07b2","schema_version":"1.0","event_id":"sha256:8032ead5e47489879ed8b84ed61256a093a647224e18e9eae1b7fe63765c07b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JTAF55OQN5HGZYVDASQ652P2SF/bundle.json","state_url":"https://pith.science/pith/JTAF55OQN5HGZYVDASQ652P2SF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JTAF55OQN5HGZYVDASQ652P2SF/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":"2026-06-08T19:05:05Z","links":{"resolver":"https://pith.science/pith/JTAF55OQN5HGZYVDASQ652P2SF","bundle":"https://pith.science/pith/JTAF55OQN5HGZYVDASQ652P2SF/bundle.json","state":"https://pith.science/pith/JTAF55OQN5HGZYVDASQ652P2SF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JTAF55OQN5HGZYVDASQ652P2SF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JTAF55OQN5HGZYVDASQ652P2SF","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":"dc5207b83197feea6fb2a4ce1f7ac44ddba8ed2c39d4ee4259bc7d5bf7303bba","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-17T23:28:52Z","title_canon_sha256":"37f4dd19a9e1d4524c4fdc8388666eae21136e6deea032560ee2136830b8c336"},"schema_version":"1.0","source":{"id":"1405.4446","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.4446","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"arxiv_version","alias_value":"1405.4446v1","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.4446","created_at":"2026-05-18T02:51:40Z"},{"alias_kind":"pith_short_12","alias_value":"JTAF55OQN5HG","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JTAF55OQN5HGZYVD","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JTAF55OQ","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:8032ead5e47489879ed8b84ed61256a093a647224e18e9eae1b7fe63765c07b2","target":"graph","created_at":"2026-05-18T02:51:40Z","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":"We propose a protected qubit which is `dual' to a suggestion of a superconducting current mirror qubit [A. Kitaev, arXiv:0609441 (2006)]. Our construction can be regarded as the magnetic analogue of Kitaev's proposal: it inherits the intrinsic fault-tolerance of the current mirror qubit, but may perform better than it in the laboratory, since magnetic noise is generally less of a problem than electric noise. We adapt the scheme for universal fault-tolerant quantum computation proposed by Kitaev to our construction.","authors_text":"Suvabrata De, Tim Spiller","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-17T23:28:52Z","title":"A protected vortex exciton qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.4446","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":"sha256:81e44a125d34d5f6a5c29c339c7e1db3d3f42be31d8aaad03fd89c2ed4719959","target":"record","created_at":"2026-05-18T02:51:40Z","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":"dc5207b83197feea6fb2a4ce1f7ac44ddba8ed2c39d4ee4259bc7d5bf7303bba","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-17T23:28:52Z","title_canon_sha256":"37f4dd19a9e1d4524c4fdc8388666eae21136e6deea032560ee2136830b8c336"},"schema_version":"1.0","source":{"id":"1405.4446","kind":"arxiv","version":1}},"canonical_sha256":"4cc05ef5d06f4e6ce2a304a1eee9fa915cd47dfe13a7062d2fd7654c717edbf7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4cc05ef5d06f4e6ce2a304a1eee9fa915cd47dfe13a7062d2fd7654c717edbf7","first_computed_at":"2026-05-18T02:51:40.848814Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:51:40.848814Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gv8hZiA4bUpazPxXotxnpORecVrugq4OoXQeKk1CnRCxQMQosxocCdabfTeXojXe7VVLq56DYEdJfgwv5TN6DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:51:40.849377Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.4446","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81e44a125d34d5f6a5c29c339c7e1db3d3f42be31d8aaad03fd89c2ed4719959","sha256:8032ead5e47489879ed8b84ed61256a093a647224e18e9eae1b7fe63765c07b2"],"state_sha256":"527c2f5a345b8c5739d22cb045c73e045b52615a63a637d2dfec3b756d887d53"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d8JeU0LckcL/i3FOPEMp7Pf18aPXNSNk2oXyf4R8XYvNdU0vbxveuTa5rs2BaRbopxcJNfn9IoIkzU5hdJDZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T19:05:05.531037Z","bundle_sha256":"edc02cdb643597ed200eaa558e0773c4c5a66f673d9fe078e283ac5fdb3824d1"}}