{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Z4RBBEPK4CYX7DVEKPT5ZRBUBA","short_pith_number":"pith:Z4RBBEPK","canonical_record":{"source":{"id":"2105.14360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-29T19:28:17Z","cross_cats_sorted":[],"title_canon_sha256":"380b63c3c0127288bca297657ce7046e68fb3241ee2e84db0888281fd35bcbb1","abstract_canon_sha256":"3ecfcfcf6764c1f22a0dcfde6dcb7f315d038c283a49d9e37e1b061e0308abf2"},"schema_version":"1.0"},"canonical_sha256":"cf221091eae0b17f8ea453e7dcc434082a3ea96881c167dfa3ddf7b2b1e6df46","source":{"kind":"arxiv","id":"2105.14360","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14360","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14360v2","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14360","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_12","alias_value":"Z4RBBEPK4CYX","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_16","alias_value":"Z4RBBEPK4CYX7DVE","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_8","alias_value":"Z4RBBEPK","created_at":"2026-07-05T03:24:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Z4RBBEPK4CYX7DVEKPT5ZRBUBA","target":"record","payload":{"canonical_record":{"source":{"id":"2105.14360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-29T19:28:17Z","cross_cats_sorted":[],"title_canon_sha256":"380b63c3c0127288bca297657ce7046e68fb3241ee2e84db0888281fd35bcbb1","abstract_canon_sha256":"3ecfcfcf6764c1f22a0dcfde6dcb7f315d038c283a49d9e37e1b061e0308abf2"},"schema_version":"1.0"},"canonical_sha256":"cf221091eae0b17f8ea453e7dcc434082a3ea96881c167dfa3ddf7b2b1e6df46","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:24:43.037761Z","signature_b64":"mLHp1L+GodCT8bJ/iTkb8UxSL4jqN7/8CdTUtnJK0XtA1NlCGKrfFD2RrdVSa3zAihMlb1Rqb+iQ8Hj9CizwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf221091eae0b17f8ea453e7dcc434082a3ea96881c167dfa3ddf7b2b1e6df46","last_reissued_at":"2026-07-05T03:24:43.037241Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:24:43.037241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.14360","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":"2026-07-05T03:24:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ttyIA+jTKx+ecyzgh+dGpDmecKod+A3yovFj8nOxVV24dA8UNJ4x1Hh+l26pGChsRS6X+8R5zk+fmUDVsHQTDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:33:47.725702Z"},"content_sha256":"f80a242cc50933c42afe2cf4005fbc720f0267a062a39378f4cecb5390e4e3f0","schema_version":"1.0","event_id":"sha256:f80a242cc50933c42afe2cf4005fbc720f0267a062a39378f4cecb5390e4e3f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Z4RBBEPK4CYX7DVEKPT5ZRBUBA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Calibration of flux crosstalk in large-scale flux-tunable superconducting quantum circuits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. J. Martinez, A. J. Melville, A. Lupascu, B. M. Niedzielski, D. A. Lidar, D. K. Kim, D. Melanson, D. M. Tennant, J. A. Grover, J. I. Basham, J. L. Yoder, M. A. Yurtalan, R. Das, R. Trappen, S. J. Weber, S. M. Disseler, S. Novikov, X. Dai, Y. Tang","submitted_at":"2021-05-29T19:28:17Z","abstract_excerpt":"Magnetic flux tunability is an essential feature in most approaches to quantum computing based on superconducting qubits. Independent control of the fluxes in multiple loops is hampered by crosstalk. Calibrating flux crosstalk becomes a challenging task when the circuit elements interact strongly. We present a novel approach to flux crosstalk calibration, which is circuit model independent and relies on an iterative process to gradually improve calibration accuracy. This method allows us to reduce errors due to the inductive coupling between loops. The calibration procedure is automated and im"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14360","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2105.14360/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:24:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iYsHn/FHtSXjqPkn3372hJ2nPiiidWBN0PTVyq2v3iZlXUaAsBB4kpjU2JoxlRl6BgHmT4Vo5Aw9zSPqHWIVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:33:47.726186Z"},"content_sha256":"43355a1edfb78f990034e57e1d000642ecd7ddc868f5885ca7f060da8b3d6ca1","schema_version":"1.0","event_id":"sha256:43355a1edfb78f990034e57e1d000642ecd7ddc868f5885ca7f060da8b3d6ca1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/bundle.json","state_url":"https://pith.science/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/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":"2026-08-03T16:33:47Z","links":{"resolver":"https://pith.science/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA","bundle":"https://pith.science/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/bundle.json","state":"https://pith.science/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4RBBEPK4CYX7DVEKPT5ZRBUBA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Z4RBBEPK4CYX7DVEKPT5ZRBUBA","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":"3ecfcfcf6764c1f22a0dcfde6dcb7f315d038c283a49d9e37e1b061e0308abf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-29T19:28:17Z","title_canon_sha256":"380b63c3c0127288bca297657ce7046e68fb3241ee2e84db0888281fd35bcbb1"},"schema_version":"1.0","source":{"id":"2105.14360","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14360","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14360v2","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14360","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_12","alias_value":"Z4RBBEPK4CYX","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_16","alias_value":"Z4RBBEPK4CYX7DVE","created_at":"2026-07-05T03:24:43Z"},{"alias_kind":"pith_short_8","alias_value":"Z4RBBEPK","created_at":"2026-07-05T03:24:43Z"}],"graph_snapshots":[{"event_id":"sha256:43355a1edfb78f990034e57e1d000642ecd7ddc868f5885ca7f060da8b3d6ca1","target":"graph","created_at":"2026-07-05T03:24:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2105.14360/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic flux tunability is an essential feature in most approaches to quantum computing based on superconducting qubits. Independent control of the fluxes in multiple loops is hampered by crosstalk. Calibrating flux crosstalk becomes a challenging task when the circuit elements interact strongly. We present a novel approach to flux crosstalk calibration, which is circuit model independent and relies on an iterative process to gradually improve calibration accuracy. This method allows us to reduce errors due to the inductive coupling between loops. The calibration procedure is automated and im","authors_text":"A. J. Martinez, A. J. Melville, A. Lupascu, B. M. Niedzielski, D. A. Lidar, D. K. Kim, D. Melanson, D. M. Tennant, J. A. Grover, J. I. Basham, J. L. Yoder, M. A. Yurtalan, R. Das, R. Trappen, S. J. Weber, S. M. Disseler, S. Novikov, X. Dai, Y. Tang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-29T19:28:17Z","title":"Calibration of flux crosstalk in large-scale flux-tunable superconducting quantum circuits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14360","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:f80a242cc50933c42afe2cf4005fbc720f0267a062a39378f4cecb5390e4e3f0","target":"record","created_at":"2026-07-05T03:24:43Z","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":"3ecfcfcf6764c1f22a0dcfde6dcb7f315d038c283a49d9e37e1b061e0308abf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-05-29T19:28:17Z","title_canon_sha256":"380b63c3c0127288bca297657ce7046e68fb3241ee2e84db0888281fd35bcbb1"},"schema_version":"1.0","source":{"id":"2105.14360","kind":"arxiv","version":2}},"canonical_sha256":"cf221091eae0b17f8ea453e7dcc434082a3ea96881c167dfa3ddf7b2b1e6df46","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf221091eae0b17f8ea453e7dcc434082a3ea96881c167dfa3ddf7b2b1e6df46","first_computed_at":"2026-07-05T03:24:43.037241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:24:43.037241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mLHp1L+GodCT8bJ/iTkb8UxSL4jqN7/8CdTUtnJK0XtA1NlCGKrfFD2RrdVSa3zAihMlb1Rqb+iQ8Hj9CizwBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:24:43.037761Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.14360","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f80a242cc50933c42afe2cf4005fbc720f0267a062a39378f4cecb5390e4e3f0","sha256:43355a1edfb78f990034e57e1d000642ecd7ddc868f5885ca7f060da8b3d6ca1"],"state_sha256":"ee92898ccdc141221951c1d859492c7971acfea9246a95b610c1a0920e4c12ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5lyHTLESSZ/hx7hLztShPT1Hb3XViN9bI26L6RWIay0b0S7QPegxsO45ynEQbXnJiE7goCwbhjtA4vlxZhDhBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:33:47.729782Z","bundle_sha256":"f3cea7965c556584cdcb6d9ecab1dca4db1598e983a993ca2f2d226aa32535d7"}}