{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:IOBTV6SBVDDCYJFNQ7VFIU6BZH","short_pith_number":"pith:IOBTV6SB","schema_version":"1.0","canonical_sha256":"43833afa41a8c62c24ad87ea5453c1c9c2a0cb4a4698d51a4a6744ec0a137dff","source":{"kind":"arxiv","id":"2212.04749","version":2},"attestation_state":"computed","paper":{"title":"Validating quantum-supremacy experiments with exact and fast tensor network contraction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC"],"primary_cat":"quant-ph","authors_text":"Chu Guo, Dexun Chen, Guangwen Yang, Haohuan Fu, Jiangang Gao, Jiawei Song, Lin Gan, Wei Wu, Wenzhao Wu, Xin Liu, Xinmin Shi, Yaojian Chen, Yong Liu, Zhifeng Zhao","submitted_at":"2022-12-09T10:01:02Z","abstract_excerpt":"The quantum supremacy experiment, such as Google Sycamore [Nature \\textbf{574}, 505 (2019)], poses great challenge for classical verification due to the exponentially-increasing compute cost. Using a new-generation Sunway supercomputer within $8.5$ days, we provide a direct verification by computing three million exact amplitudes for the experimentally generated bitstrings, obtaining an XEB fidelity of $0.191\\%$ (the estimated value is $0.224\\%$). The leap of simulation capability is built on a multiple-amplitude tensor network contraction algorithm which systematically exploits the ``classica"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2212.04749","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-12-09T10:01:02Z","cross_cats_sorted":["cs.DC"],"title_canon_sha256":"7ec30cbed61f5f20547f23c69c29d1ec0d7f97730aaf700173a1b7efeb8aa556","abstract_canon_sha256":"003b3f064d93e0ecbf4de7489f4609e408e909823cfae59d948931a814dff6d6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:34:14.595157Z","signature_b64":"fF3I+hihTbB8VH8puGYtWM0R3PkraDdYtcgCMUF+z1zwOEwraz3uf1bLtRHvLZWhdJvY370mIXFpnVT6uMIHDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43833afa41a8c62c24ad87ea5453c1c9c2a0cb4a4698d51a4a6744ec0a137dff","last_reissued_at":"2026-07-05T07:34:14.594673Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:34:14.594673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Validating quantum-supremacy experiments with exact and fast tensor network contraction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC"],"primary_cat":"quant-ph","authors_text":"Chu Guo, Dexun Chen, Guangwen Yang, Haohuan Fu, Jiangang Gao, Jiawei Song, Lin Gan, Wei Wu, Wenzhao Wu, Xin Liu, Xinmin Shi, Yaojian Chen, Yong Liu, Zhifeng Zhao","submitted_at":"2022-12-09T10:01:02Z","abstract_excerpt":"The quantum supremacy experiment, such as Google Sycamore [Nature \\textbf{574}, 505 (2019)], poses great challenge for classical verification due to the exponentially-increasing compute cost. Using a new-generation Sunway supercomputer within $8.5$ days, we provide a direct verification by computing three million exact amplitudes for the experimentally generated bitstrings, obtaining an XEB fidelity of $0.191\\%$ (the estimated value is $0.224\\%$). The leap of simulation capability is built on a multiple-amplitude tensor network contraction algorithm which systematically exploits the ``classica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.04749","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/2212.04749/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2212.04749","created_at":"2026-07-05T07:34:14.594730+00:00"},{"alias_kind":"arxiv_version","alias_value":"2212.04749v2","created_at":"2026-07-05T07:34:14.594730+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.04749","created_at":"2026-07-05T07:34:14.594730+00:00"},{"alias_kind":"pith_short_12","alias_value":"IOBTV6SBVDDC","created_at":"2026-07-05T07:34:14.594730+00:00"},{"alias_kind":"pith_short_16","alias_value":"IOBTV6SBVDDCYJFN","created_at":"2026-07-05T07:34:14.594730+00:00"},{"alias_kind":"pith_short_8","alias_value":"IOBTV6SB","created_at":"2026-07-05T07:34:14.594730+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH","json":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH.json","graph_json":"https://pith.science/api/pith-number/IOBTV6SBVDDCYJFNQ7VFIU6BZH/graph.json","events_json":"https://pith.science/api/pith-number/IOBTV6SBVDDCYJFNQ7VFIU6BZH/events.json","paper":"https://pith.science/paper/IOBTV6SB"},"agent_actions":{"view_html":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH","download_json":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH.json","view_paper":"https://pith.science/paper/IOBTV6SB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2212.04749&json=true","fetch_graph":"https://pith.science/api/pith-number/IOBTV6SBVDDCYJFNQ7VFIU6BZH/graph.json","fetch_events":"https://pith.science/api/pith-number/IOBTV6SBVDDCYJFNQ7VFIU6BZH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH/action/storage_attestation","attest_author":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH/action/author_attestation","sign_citation":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH/action/citation_signature","submit_replication":"https://pith.science/pith/IOBTV6SBVDDCYJFNQ7VFIU6BZH/action/replication_record"}},"created_at":"2026-07-05T07:34:14.594730+00:00","updated_at":"2026-07-05T07:34:14.594730+00:00"}