{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:HEN2Q65KFQTJGPGB6YZVWT2A2A","short_pith_number":"pith:HEN2Q65K","canonical_record":{"source":{"id":"2201.08080","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-20T09:26:23Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"6e281a4ee3656febbc714f0b556a706b7496258cadafa6e7439609d6731030f6","abstract_canon_sha256":"d2cbbebef7dee8977fcc6b00f34d21cc4b27218c66498474f4646d9926fad72d"},"schema_version":"1.0"},"canonical_sha256":"391ba87baa2c26933cc1f6335b4f40d03472860bd6ff4ff2ceb8578a9e61864b","source":{"kind":"arxiv","id":"2201.08080","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.08080","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"arxiv_version","alias_value":"2201.08080v3","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.08080","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_12","alias_value":"HEN2Q65KFQTJ","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_16","alias_value":"HEN2Q65KFQTJGPGB","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_8","alias_value":"HEN2Q65K","created_at":"2026-07-05T05:30:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:HEN2Q65KFQTJGPGB6YZVWT2A2A","target":"record","payload":{"canonical_record":{"source":{"id":"2201.08080","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-20T09:26:23Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"6e281a4ee3656febbc714f0b556a706b7496258cadafa6e7439609d6731030f6","abstract_canon_sha256":"d2cbbebef7dee8977fcc6b00f34d21cc4b27218c66498474f4646d9926fad72d"},"schema_version":"1.0"},"canonical_sha256":"391ba87baa2c26933cc1f6335b4f40d03472860bd6ff4ff2ceb8578a9e61864b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:30:06.019451Z","signature_b64":"N46WIR3VbaBrGTxjeF1OLkXHUcBiZzIS64QmGaHqIPcsygNcZnZoslCYOzFIzMrZ5FAwMAVpnLYQzHwgHCnJCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"391ba87baa2c26933cc1f6335b4f40d03472860bd6ff4ff2ceb8578a9e61864b","last_reissued_at":"2026-07-05T05:30:06.018941Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:30:06.018941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.08080","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:30:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OsHhrF4GmMGBx1yJmX70Q46bZqotSgOk0Jfi7zy0UtffqhApxR8yvYCOaGk34rbQIfG058rsaekhCWj/R8uXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:58:32.440882Z"},"content_sha256":"e29a8bb98f97be1c841a37156623b83c5da90198d0274af627ee36510b5a5450","schema_version":"1.0","event_id":"sha256:e29a8bb98f97be1c841a37156623b83c5da90198d0274af627ee36510b5a5450"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:HEN2Q65KFQTJGPGB6YZVWT2A2A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimization of Richardson extrapolation for quantum error mitigation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"quant-ph","authors_text":"Alessio Calzona, Bj\\\"orn Trauzettel, Michael Krebsbach","submitted_at":"2022-01-20T09:26:23Z","abstract_excerpt":"Quantum error mitigation is a key concept for the development of practical applications based on current noisy intermediate scale quantum (NISQ) devices. One of the most promising methods is Richardson extrapolation to the zero noise limit. While its main idea is rather simple, the full potential of Richardson extrapolation has not been completely uncovered yet. We give an in-depth analysis of the relevant parameters of Richardson extrapolation and propose an optimized protocol for its implementation. This protocol allows for a precise control of the increase in statistical uncertainty and lay"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.08080","kind":"arxiv","version":3},"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/2201.08080/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":"2026-07-05T05:30:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kESfm+4xZp4EWIxQv6Ab0o6n5MlBlH0tCdBQYth9WH1TzUYX5Fv0VNfvNxkqQ78dEoH8tD8oKCNDMYvEPSHrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:58:32.441621Z"},"content_sha256":"f141538a803c43360aec9ab8fd4bb626353c4fb4266a57cb60ab69e6b67dc5ae","schema_version":"1.0","event_id":"sha256:f141538a803c43360aec9ab8fd4bb626353c4fb4266a57cb60ab69e6b67dc5ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/bundle.json","state_url":"https://pith.science/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/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":"2026-08-19T19:58:32Z","links":{"resolver":"https://pith.science/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A","bundle":"https://pith.science/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/bundle.json","state":"https://pith.science/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HEN2Q65KFQTJGPGB6YZVWT2A2A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:HEN2Q65KFQTJGPGB6YZVWT2A2A","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":"d2cbbebef7dee8977fcc6b00f34d21cc4b27218c66498474f4646d9926fad72d","cross_cats_sorted":["cond-mat.other"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-20T09:26:23Z","title_canon_sha256":"6e281a4ee3656febbc714f0b556a706b7496258cadafa6e7439609d6731030f6"},"schema_version":"1.0","source":{"id":"2201.08080","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.08080","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"arxiv_version","alias_value":"2201.08080v3","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.08080","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_12","alias_value":"HEN2Q65KFQTJ","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_16","alias_value":"HEN2Q65KFQTJGPGB","created_at":"2026-07-05T05:30:06Z"},{"alias_kind":"pith_short_8","alias_value":"HEN2Q65K","created_at":"2026-07-05T05:30:06Z"}],"graph_snapshots":[{"event_id":"sha256:f141538a803c43360aec9ab8fd4bb626353c4fb4266a57cb60ab69e6b67dc5ae","target":"graph","created_at":"2026-07-05T05:30:06Z","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/2201.08080/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum error mitigation is a key concept for the development of practical applications based on current noisy intermediate scale quantum (NISQ) devices. One of the most promising methods is Richardson extrapolation to the zero noise limit. While its main idea is rather simple, the full potential of Richardson extrapolation has not been completely uncovered yet. We give an in-depth analysis of the relevant parameters of Richardson extrapolation and propose an optimized protocol for its implementation. This protocol allows for a precise control of the increase in statistical uncertainty and lay","authors_text":"Alessio Calzona, Bj\\\"orn Trauzettel, Michael Krebsbach","cross_cats":["cond-mat.other"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-20T09:26:23Z","title":"Optimization of Richardson extrapolation for quantum error mitigation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.08080","kind":"arxiv","version":3},"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:e29a8bb98f97be1c841a37156623b83c5da90198d0274af627ee36510b5a5450","target":"record","created_at":"2026-07-05T05:30:06Z","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":"d2cbbebef7dee8977fcc6b00f34d21cc4b27218c66498474f4646d9926fad72d","cross_cats_sorted":["cond-mat.other"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-20T09:26:23Z","title_canon_sha256":"6e281a4ee3656febbc714f0b556a706b7496258cadafa6e7439609d6731030f6"},"schema_version":"1.0","source":{"id":"2201.08080","kind":"arxiv","version":3}},"canonical_sha256":"391ba87baa2c26933cc1f6335b4f40d03472860bd6ff4ff2ceb8578a9e61864b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"391ba87baa2c26933cc1f6335b4f40d03472860bd6ff4ff2ceb8578a9e61864b","first_computed_at":"2026-07-05T05:30:06.018941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:30:06.018941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N46WIR3VbaBrGTxjeF1OLkXHUcBiZzIS64QmGaHqIPcsygNcZnZoslCYOzFIzMrZ5FAwMAVpnLYQzHwgHCnJCA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:30:06.019451Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.08080","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e29a8bb98f97be1c841a37156623b83c5da90198d0274af627ee36510b5a5450","sha256:f141538a803c43360aec9ab8fd4bb626353c4fb4266a57cb60ab69e6b67dc5ae"],"state_sha256":"ac343602c329b7c924ab24d5a46b8bebd2e078215dacd2d03257256bdb3a34de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nyM6f3KVHUxofsWwSVfgpPXv8sPtCrfgmFeigJHD5PmqIKZmlv2zw+Qhehfi62Ln7RRb7rMGKi2oTtnT0cEAAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T19:58:32.448876Z","bundle_sha256":"3b093256b2cb88fb741cb55e973664c7cdef57dec086222f62da02397a9a393f"}}