{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:E5XZGJ4WIEI3VKOXWFK7MOMNH7","short_pith_number":"pith:E5XZGJ4W","canonical_record":{"source":{"id":"1304.5548","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-19T21:07:50Z","cross_cats_sorted":[],"title_canon_sha256":"8e0980f0e3c43e77a0a999cb7b5b45d8aa8c1acf623b9b8fcedbd2ca3110d2f8","abstract_canon_sha256":"655c229d40458fc91493c6716e2de4d2f88d2c1c0526ee2da29ee4072fad8d25"},"schema_version":"1.0"},"canonical_sha256":"276f9327964111baa9d7b155f6398d3fce44ed37b023b3649ec7e0f242b79abe","source":{"kind":"arxiv","id":"1304.5548","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5548","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5548v1","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5548","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"pith_short_12","alias_value":"E5XZGJ4WIEI3","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"E5XZGJ4WIEI3VKOX","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"E5XZGJ4W","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:E5XZGJ4WIEI3VKOXWFK7MOMNH7","target":"record","payload":{"canonical_record":{"source":{"id":"1304.5548","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-19T21:07:50Z","cross_cats_sorted":[],"title_canon_sha256":"8e0980f0e3c43e77a0a999cb7b5b45d8aa8c1acf623b9b8fcedbd2ca3110d2f8","abstract_canon_sha256":"655c229d40458fc91493c6716e2de4d2f88d2c1c0526ee2da29ee4072fad8d25"},"schema_version":"1.0"},"canonical_sha256":"276f9327964111baa9d7b155f6398d3fce44ed37b023b3649ec7e0f242b79abe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:31.730838Z","signature_b64":"EtIuMS9N61oasa93wItnt9fIMLVlCWXt9T/S/KnmVhAider14F4KPaNGLfzWJEgcE2lnUWH4YyI+VKp89UHyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"276f9327964111baa9d7b155f6398d3fce44ed37b023b3649ec7e0f242b79abe","last_reissued_at":"2026-05-18T03:27:31.730308Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:31.730308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.5548","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":"2026-05-18T03:27:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HQd65t3eqJyln1G9/km3WNUI7RPlBdCglXICpFI30IuLkPa+vD+w0Vz3wPdCNBsiN9gLuOD0Xkg6MdHfxGWkAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:25:48.309289Z"},"content_sha256":"cd4bff1c6e2c011e27086eccd75592c02c9465ef82d6d012187871ec6e5de213","schema_version":"1.0","event_id":"sha256:cd4bff1c6e2c011e27086eccd75592c02c9465ef82d6d012187871ec6e5de213"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:E5XZGJ4WIEI3VKOXWFK7MOMNH7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reducing the number of ancilla qubits and the gate count required for creating large controlled operations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anmer Daskin, Jonathan P. Dowling, Katherine L. Brown, Sabre Kais","submitted_at":"2013-04-19T21:07:50Z","abstract_excerpt":"In this paper we show that it is possible to adapt a qudit scheme for creating a controlled-Toffoli created by Ralph et al. [Phys. Rev. A 75 011213] to be applicable to qubits. While this scheme requires more gates than standard schemes for creating large controlled gates, we show that with simple adaptations it is directly equivalent to the standard scheme in the literature. This scheme is the most gate-efficient way of creating large controlled unitaries currently known, however it is expensive in terms of the number of ancilla qubits used. We go on to show that using a combination of these "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5548","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":"2026-05-18T03:27:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zc7DJs016NLJmfGSM+4oej9108/H0feTE2FseExE4bAM4VIsX1RBn1PSGzMKLkzQIrDooFf5ZcjSiwoCT4wuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:25:48.309644Z"},"content_sha256":"54c49cfcaa912a4d607668984e332a6781d908f5eb2eda50d2c52a1ce703a8f1","schema_version":"1.0","event_id":"sha256:54c49cfcaa912a4d607668984e332a6781d908f5eb2eda50d2c52a1ce703a8f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/bundle.json","state_url":"https://pith.science/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/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":"2026-06-02T06:25:48Z","links":{"resolver":"https://pith.science/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7","bundle":"https://pith.science/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/bundle.json","state":"https://pith.science/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E5XZGJ4WIEI3VKOXWFK7MOMNH7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:E5XZGJ4WIEI3VKOXWFK7MOMNH7","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":"655c229d40458fc91493c6716e2de4d2f88d2c1c0526ee2da29ee4072fad8d25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-19T21:07:50Z","title_canon_sha256":"8e0980f0e3c43e77a0a999cb7b5b45d8aa8c1acf623b9b8fcedbd2ca3110d2f8"},"schema_version":"1.0","source":{"id":"1304.5548","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5548","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5548v1","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5548","created_at":"2026-05-18T03:27:31Z"},{"alias_kind":"pith_short_12","alias_value":"E5XZGJ4WIEI3","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"E5XZGJ4WIEI3VKOX","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"E5XZGJ4W","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:54c49cfcaa912a4d607668984e332a6781d908f5eb2eda50d2c52a1ce703a8f1","target":"graph","created_at":"2026-05-18T03:27:31Z","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":"In this paper we show that it is possible to adapt a qudit scheme for creating a controlled-Toffoli created by Ralph et al. [Phys. Rev. A 75 011213] to be applicable to qubits. While this scheme requires more gates than standard schemes for creating large controlled gates, we show that with simple adaptations it is directly equivalent to the standard scheme in the literature. This scheme is the most gate-efficient way of creating large controlled unitaries currently known, however it is expensive in terms of the number of ancilla qubits used. We go on to show that using a combination of these ","authors_text":"Anmer Daskin, Jonathan P. Dowling, Katherine L. Brown, Sabre Kais","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-19T21:07:50Z","title":"Reducing the number of ancilla qubits and the gate count required for creating large controlled operations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5548","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:cd4bff1c6e2c011e27086eccd75592c02c9465ef82d6d012187871ec6e5de213","target":"record","created_at":"2026-05-18T03:27:31Z","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":"655c229d40458fc91493c6716e2de4d2f88d2c1c0526ee2da29ee4072fad8d25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-04-19T21:07:50Z","title_canon_sha256":"8e0980f0e3c43e77a0a999cb7b5b45d8aa8c1acf623b9b8fcedbd2ca3110d2f8"},"schema_version":"1.0","source":{"id":"1304.5548","kind":"arxiv","version":1}},"canonical_sha256":"276f9327964111baa9d7b155f6398d3fce44ed37b023b3649ec7e0f242b79abe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"276f9327964111baa9d7b155f6398d3fce44ed37b023b3649ec7e0f242b79abe","first_computed_at":"2026-05-18T03:27:31.730308Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:31.730308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EtIuMS9N61oasa93wItnt9fIMLVlCWXt9T/S/KnmVhAider14F4KPaNGLfzWJEgcE2lnUWH4YyI+VKp89UHyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:31.730838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.5548","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd4bff1c6e2c011e27086eccd75592c02c9465ef82d6d012187871ec6e5de213","sha256:54c49cfcaa912a4d607668984e332a6781d908f5eb2eda50d2c52a1ce703a8f1"],"state_sha256":"c80b862238acb9404b5ee319723da7cb2e1974aff59ec42aa7f55c8e23efcbb4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KDpqLq5uvufeJO0hbimIc1oDM6bhITkbzBp8q+4xxgodFUpbbRVPs3t0FFXXgL7KzjqyK7IQfCqvwo20cX59AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:25:48.311571Z","bundle_sha256":"355d23695b385a9858fc6fd6539c0d98770d9f8f5936fb686461d514706368d8"}}