{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:7DAUQKZGZO2J7542F4WK5E73NO","short_pith_number":"pith:7DAUQKZG","canonical_record":{"source":{"id":"quant-ph/0202168","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-27T20:20:47Z","cross_cats_sorted":[],"title_canon_sha256":"38e1bf0524ab3cde609b0b407015fe2ba2b774665c3c1ed1ac63c68d98fc9952","abstract_canon_sha256":"8002b35b9b8f28aeac24d373d84e0d7368c3f18dd32860a221795a0621789325"},"schema_version":"1.0"},"canonical_sha256":"f8c1482b26cbb49ff79a2f2cae93fb6b8a31547567a6a0d601118132103cf4a5","source":{"kind":"arxiv","id":"quant-ph/0202168","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0202168","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0202168v1","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0202168","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"7DAUQKZGZO2J","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7DAUQKZGZO2J7542","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7DAUQKZG","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:7DAUQKZGZO2J7542F4WK5E73NO","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0202168","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-27T20:20:47Z","cross_cats_sorted":[],"title_canon_sha256":"38e1bf0524ab3cde609b0b407015fe2ba2b774665c3c1ed1ac63c68d98fc9952","abstract_canon_sha256":"8002b35b9b8f28aeac24d373d84e0d7368c3f18dd32860a221795a0621789325"},"schema_version":"1.0"},"canonical_sha256":"f8c1482b26cbb49ff79a2f2cae93fb6b8a31547567a6a0d601118132103cf4a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:04.599517Z","signature_b64":"r7SiS87aZQVYfdoflTLAW8HX0/IEcxR0okCIKcVvZlVQhl/WqwZwyEnWfrCJFbzgJzAewWpms0uIIqJuBG+uCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8c1482b26cbb49ff79a2f2cae93fb6b8a31547567a6a0d601118132103cf4a5","last_reissued_at":"2026-05-18T01:05:04.599012Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:04.599012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0202168","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":"2026-05-18T01:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IsVVBO2rdRKoTyENafwbCNQnDril5CRZTPPFhZTNNxQCnHcdUXgyG8RvuHaViCWmB4gRYlz9CTfoJIw/11PVBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T20:41:41.839378Z"},"content_sha256":"5f92152ea11dc4358263449d47d8dbeac029d184ecd52553f2cfda2cd25bdb14","schema_version":"1.0","event_id":"sha256:5f92152ea11dc4358263449d47d8dbeac029d184ecd52553f2cfda2cd25bdb14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:7DAUQKZGZO2J7542F4WK5E73NO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Universal Leakage Elimination for Physical and Encoded Qubits","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"D.A. Lidar (University of Toronto), L.-A. Wu, M.S. Byrd","submitted_at":"2002-02-27T20:20:47Z","abstract_excerpt":"Decoherence-induced leakage errors can couple a physical or encoded qubit to other levels, thus potentially damaging the qubit. They can therefore be very detrimental in quantum computation and require special attention. Here we present a general method for removing such errors by using simple decoupling and recoupling pulse sequences. The proposed gates are experimentally accessible in a variety of promising quantum computing proposals."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0202168","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":"2026-05-18T01:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GdwZ1Uixyh6OdeWERA/hE4JdgLlzhKNALMfNmO8W2v7nvXQyYYpWymgJI4L+6eHha+C0zvKVekY6XPxFUjSfDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T20:41:41.839800Z"},"content_sha256":"3bd2db4a58ac434d9ac6071e14c11b557e4e095bc79ed32720f93b141b7e85e6","schema_version":"1.0","event_id":"sha256:3bd2db4a58ac434d9ac6071e14c11b557e4e095bc79ed32720f93b141b7e85e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7DAUQKZGZO2J7542F4WK5E73NO/bundle.json","state_url":"https://pith.science/pith/7DAUQKZGZO2J7542F4WK5E73NO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7DAUQKZGZO2J7542F4WK5E73NO/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":"2026-06-25T20:41:41Z","links":{"resolver":"https://pith.science/pith/7DAUQKZGZO2J7542F4WK5E73NO","bundle":"https://pith.science/pith/7DAUQKZGZO2J7542F4WK5E73NO/bundle.json","state":"https://pith.science/pith/7DAUQKZGZO2J7542F4WK5E73NO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7DAUQKZGZO2J7542F4WK5E73NO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:7DAUQKZGZO2J7542F4WK5E73NO","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":"8002b35b9b8f28aeac24d373d84e0d7368c3f18dd32860a221795a0621789325","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-27T20:20:47Z","title_canon_sha256":"38e1bf0524ab3cde609b0b407015fe2ba2b774665c3c1ed1ac63c68d98fc9952"},"schema_version":"1.0","source":{"id":"quant-ph/0202168","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0202168","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0202168v1","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0202168","created_at":"2026-05-18T01:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"7DAUQKZGZO2J","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7DAUQKZGZO2J7542","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7DAUQKZG","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:3bd2db4a58ac434d9ac6071e14c11b557e4e095bc79ed32720f93b141b7e85e6","target":"graph","created_at":"2026-05-18T01:05:04Z","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":"Decoherence-induced leakage errors can couple a physical or encoded qubit to other levels, thus potentially damaging the qubit. They can therefore be very detrimental in quantum computation and require special attention. Here we present a general method for removing such errors by using simple decoupling and recoupling pulse sequences. The proposed gates are experimentally accessible in a variety of promising quantum computing proposals.","authors_text":"D.A. Lidar (University of Toronto), L.-A. Wu, M.S. Byrd","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2002-02-27T20:20:47Z","title":"Efficient Universal Leakage Elimination for Physical and Encoded Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0202168","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":"sha256:5f92152ea11dc4358263449d47d8dbeac029d184ecd52553f2cfda2cd25bdb14","target":"record","created_at":"2026-05-18T01:05:04Z","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":"8002b35b9b8f28aeac24d373d84e0d7368c3f18dd32860a221795a0621789325","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2002-02-27T20:20:47Z","title_canon_sha256":"38e1bf0524ab3cde609b0b407015fe2ba2b774665c3c1ed1ac63c68d98fc9952"},"schema_version":"1.0","source":{"id":"quant-ph/0202168","kind":"arxiv","version":1}},"canonical_sha256":"f8c1482b26cbb49ff79a2f2cae93fb6b8a31547567a6a0d601118132103cf4a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8c1482b26cbb49ff79a2f2cae93fb6b8a31547567a6a0d601118132103cf4a5","first_computed_at":"2026-05-18T01:05:04.599012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:04.599012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r7SiS87aZQVYfdoflTLAW8HX0/IEcxR0okCIKcVvZlVQhl/WqwZwyEnWfrCJFbzgJzAewWpms0uIIqJuBG+uCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:04.599517Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0202168","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f92152ea11dc4358263449d47d8dbeac029d184ecd52553f2cfda2cd25bdb14","sha256:3bd2db4a58ac434d9ac6071e14c11b557e4e095bc79ed32720f93b141b7e85e6"],"state_sha256":"0d8f1835a252c931bc9955eca9ca127588d671d99ba90901335b68f4dcb45e13"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2q7Dvq2/K5dQyIxyJDnlsTilvvB7GwNJIKKFm3gOlqHBN6IavnzEDTpuEDHsuCs8k9b/VX/cgc2V/lvj8rBYAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T20:41:41.842142Z","bundle_sha256":"55de47309365e9ff6e80eeb8393408d5494239f1b7028d63e1770aa9c0d4f16a"}}