{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:EUJ4K7TSRJK5BH4SJWE344EKXR","short_pith_number":"pith:EUJ4K7TS","canonical_record":{"source":{"id":"1611.04815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-11-15T13:08:12Z","cross_cats_sorted":[],"title_canon_sha256":"4848f65bfc1bc3cb86daa74d26426dbbfe153bcdf662f990d148c13b051b01e1","abstract_canon_sha256":"a73e898f8b706ff371935f3800ae0076ef3d004cd82a79c6f3e7d7e5ae18ea62"},"schema_version":"1.0"},"canonical_sha256":"2513c57e728a55d09f924d89be708abc5b609837a1d8e69f89c16c8cade1d46e","source":{"kind":"arxiv","id":"1611.04815","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.04815","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"1611.04815v1","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.04815","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"EUJ4K7TSRJK5","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"EUJ4K7TSRJK5BH4S","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"EUJ4K7TS","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:EUJ4K7TSRJK5BH4SJWE344EKXR","target":"record","payload":{"canonical_record":{"source":{"id":"1611.04815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-11-15T13:08:12Z","cross_cats_sorted":[],"title_canon_sha256":"4848f65bfc1bc3cb86daa74d26426dbbfe153bcdf662f990d148c13b051b01e1","abstract_canon_sha256":"a73e898f8b706ff371935f3800ae0076ef3d004cd82a79c6f3e7d7e5ae18ea62"},"schema_version":"1.0"},"canonical_sha256":"2513c57e728a55d09f924d89be708abc5b609837a1d8e69f89c16c8cade1d46e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:15.061028Z","signature_b64":"pdznmMjIujtb4Mk6c7uRiQlXKYD84RjovDu27l44JBrAVNd5jNAGNokikZZCvZgNyyOEDcctwRQEwps+pWPBDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2513c57e728a55d09f924d89be708abc5b609837a1d8e69f89c16c8cade1d46e","last_reissued_at":"2026-05-18T00:45:15.060402Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:15.060402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.04815","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":"2026-05-18T00:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gAMZTqICOf7dw1GM0QPfC5cfmlOSKdufNGa3GZ36+QTOI197BL59uD+rKwVHOnHm0N7+5uwDJj+Hc1w3/sA+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:27:42.062036Z"},"content_sha256":"0ee7f3e4218ce707342d0d5a7a972c4aeee8007aa19a0f5030d39620f9774d8b","schema_version":"1.0","event_id":"sha256:0ee7f3e4218ce707342d0d5a7a972c4aeee8007aa19a0f5030d39620f9774d8b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:EUJ4K7TSRJK5BH4SJWE344EKXR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Restless Tuneup of High-Fidelity Qubit Gates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Bruno, C.C. Bultink, D. Deurloo, F.K. Wilhelm, F.Luthi, J.C. de Sterke, L. DiCarlo, L.S. Theis, M.A. Rol, R.F.L. Vermeulen, R.N. Schouten, S.R. de Jong, T.E. O'Brien, X.Fu","submitted_at":"2016-11-15T13:08:12Z","abstract_excerpt":"We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of non-demolition measurements interleaving gate operations without pause. Applying the protocol on a transmon qubit achieves 0.999 average Clifford fidelity in one minute, as independently verified using randomized benchmarking and gate set tomography. The adjustable sensitivity of the cost function allows detecting fractional changes in g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.04815","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":"2026-05-18T00:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O84RRi7JAKyPjthlA87en4Bdm7+ZyNJ/hSpYFr5utJ02Awhoo6WV79YAyhECQJUU+dK1skvafJ371STIQgHPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:27:42.062394Z"},"content_sha256":"5b217dbf933b651f5d33a84ba1d1b12643c43781d4055448fe03c847c89de0a3","schema_version":"1.0","event_id":"sha256:5b217dbf933b651f5d33a84ba1d1b12643c43781d4055448fe03c847c89de0a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/bundle.json","state_url":"https://pith.science/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/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":"2026-06-01T10:27:42Z","links":{"resolver":"https://pith.science/pith/EUJ4K7TSRJK5BH4SJWE344EKXR","bundle":"https://pith.science/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/bundle.json","state":"https://pith.science/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EUJ4K7TSRJK5BH4SJWE344EKXR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EUJ4K7TSRJK5BH4SJWE344EKXR","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":"a73e898f8b706ff371935f3800ae0076ef3d004cd82a79c6f3e7d7e5ae18ea62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-11-15T13:08:12Z","title_canon_sha256":"4848f65bfc1bc3cb86daa74d26426dbbfe153bcdf662f990d148c13b051b01e1"},"schema_version":"1.0","source":{"id":"1611.04815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.04815","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"1611.04815v1","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.04815","created_at":"2026-05-18T00:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"EUJ4K7TSRJK5","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"EUJ4K7TSRJK5BH4S","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"EUJ4K7TS","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:5b217dbf933b651f5d33a84ba1d1b12643c43781d4055448fe03c847c89de0a3","target":"graph","created_at":"2026-05-18T00:45:15Z","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 present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of non-demolition measurements interleaving gate operations without pause. Applying the protocol on a transmon qubit achieves 0.999 average Clifford fidelity in one minute, as independently verified using randomized benchmarking and gate set tomography. The adjustable sensitivity of the cost function allows detecting fractional changes in g","authors_text":"A. Bruno, C.C. Bultink, D. Deurloo, F.K. Wilhelm, F.Luthi, J.C. de Sterke, L. DiCarlo, L.S. Theis, M.A. Rol, R.F.L. Vermeulen, R.N. Schouten, S.R. de Jong, T.E. O'Brien, X.Fu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-11-15T13:08:12Z","title":"Restless Tuneup of High-Fidelity Qubit Gates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.04815","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":"sha256:0ee7f3e4218ce707342d0d5a7a972c4aeee8007aa19a0f5030d39620f9774d8b","target":"record","created_at":"2026-05-18T00:45:15Z","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":"a73e898f8b706ff371935f3800ae0076ef3d004cd82a79c6f3e7d7e5ae18ea62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-11-15T13:08:12Z","title_canon_sha256":"4848f65bfc1bc3cb86daa74d26426dbbfe153bcdf662f990d148c13b051b01e1"},"schema_version":"1.0","source":{"id":"1611.04815","kind":"arxiv","version":1}},"canonical_sha256":"2513c57e728a55d09f924d89be708abc5b609837a1d8e69f89c16c8cade1d46e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2513c57e728a55d09f924d89be708abc5b609837a1d8e69f89c16c8cade1d46e","first_computed_at":"2026-05-18T00:45:15.060402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:15.060402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pdznmMjIujtb4Mk6c7uRiQlXKYD84RjovDu27l44JBrAVNd5jNAGNokikZZCvZgNyyOEDcctwRQEwps+pWPBDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:15.061028Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.04815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ee7f3e4218ce707342d0d5a7a972c4aeee8007aa19a0f5030d39620f9774d8b","sha256:5b217dbf933b651f5d33a84ba1d1b12643c43781d4055448fe03c847c89de0a3"],"state_sha256":"b6882580bcaad6326e0dfddb2afdbd064f08a3001bee171380e4583b0e364b0f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uyXAwK+MNESXhsL66E5eDGTti7jXjDHjrXYmXM+vGotPwhahZAkd3ygKHAYy62JjVxhxXcQcD2U3ds8EPPl7Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T10:27:42.064342Z","bundle_sha256":"bf512dcae902a8d9d4dae400629db5c603b59ec9101551b3eefe643869b7cf76"}}