{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:5WHG2ITEY3SVA5ORGXHT4LX3WM","short_pith_number":"pith:5WHG2ITE","canonical_record":{"source":{"id":"2501.03144","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-06T17:09:38Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"5b377cf1101dee3a6a1fd9f2afd5db6c196d72771f213b4a1ff584e7c7c4cdd2","abstract_canon_sha256":"6c0a0efbd9a135b818d7f6fff5f0faabb266ceb81499b711f4af05d33decd6f9"},"schema_version":"1.0"},"canonical_sha256":"ed8e6d2264c6e55075d135cf3e2efbb31f2bdf48bfb1e011da032ba51c6cf22f","source":{"kind":"arxiv","id":"2501.03144","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.03144","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"arxiv_version","alias_value":"2501.03144v2","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.03144","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_12","alias_value":"5WHG2ITEY3SV","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_16","alias_value":"5WHG2ITEY3SVA5OR","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_8","alias_value":"5WHG2ITE","created_at":"2026-07-05T09:59:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:5WHG2ITEY3SVA5ORGXHT4LX3WM","target":"record","payload":{"canonical_record":{"source":{"id":"2501.03144","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-06T17:09:38Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"5b377cf1101dee3a6a1fd9f2afd5db6c196d72771f213b4a1ff584e7c7c4cdd2","abstract_canon_sha256":"6c0a0efbd9a135b818d7f6fff5f0faabb266ceb81499b711f4af05d33decd6f9"},"schema_version":"1.0"},"canonical_sha256":"ed8e6d2264c6e55075d135cf3e2efbb31f2bdf48bfb1e011da032ba51c6cf22f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:59:02.504925Z","signature_b64":"JlE9KvmiHD4yuL/PkFSZOD/GaAe4XSkmz1P0qF42I0YQscVzH2/TRYqKMUNoFCidj3/o0Ayt2oJ/HquDJG9HCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed8e6d2264c6e55075d135cf3e2efbb31f2bdf48bfb1e011da032ba51c6cf22f","last_reissued_at":"2026-07-05T09:59:02.504436Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:59:02.504436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.03144","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":"2026-07-05T09:59:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RqK2L0TT0G635k//xz1sKQx38wUYZ0aNocu1pDtLsKNrrGOMMWS3ogXrujaIjrJz8MukCWdcpIWEEHGtvJntDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T23:15:28.761617Z"},"content_sha256":"5d03803f827f09cfac1c0972188af7c35f97c4d68ac1e6b6c344baca66ecc936","schema_version":"1.0","event_id":"sha256:5d03803f827f09cfac1c0972188af7c35f97c4d68ac1e6b6c344baca66ecc936"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:5WHG2ITEY3SVA5ORGXHT4LX3WM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancing Quantum State Reconstruction with Structured Classical Shadows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.OC"],"primary_cat":"quant-ph","authors_text":"Brian T. Kirby, Joseph M. Lukens, Zhen Qin, Zhihui Zhu","submitted_at":"2025-01-06T17:09:38Z","abstract_excerpt":"Quantum state tomography (QST) remains the prevailing method for benchmarking and verifying quantum devices; however, its application to large quantum systems is rendered impractical due to the exponential growth in both the required number of total state copies and classical computational resources. Recently, the classical shadow (CS) method has been introduced as a more computationally efficient alternative, capable of accurately predicting key quantum state properties. Despite its advantages, a critical question remains as to whether the CS method can be extended to perform QST with guarant"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.03144","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/2501.03144/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":"2026-07-05T09:59:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sUv+uAe1WabjGGmWZCtQHttdJBkHoRt7CUK95pE6PBa/BjrCnmkOgnXPmdO8HSZ7nwsG93IjzWz0yfZt7Z2jDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T23:15:28.762211Z"},"content_sha256":"b7a9f27aefaac901cf98d71bdc38a9ad5796c5a879f6a0d3186ba76ef4a7b900","schema_version":"1.0","event_id":"sha256:b7a9f27aefaac901cf98d71bdc38a9ad5796c5a879f6a0d3186ba76ef4a7b900"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/bundle.json","state_url":"https://pith.science/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/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":"2026-08-10T23:15:28Z","links":{"resolver":"https://pith.science/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM","bundle":"https://pith.science/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/bundle.json","state":"https://pith.science/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5WHG2ITEY3SVA5ORGXHT4LX3WM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5WHG2ITEY3SVA5ORGXHT4LX3WM","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":"6c0a0efbd9a135b818d7f6fff5f0faabb266ceb81499b711f4af05d33decd6f9","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-06T17:09:38Z","title_canon_sha256":"5b377cf1101dee3a6a1fd9f2afd5db6c196d72771f213b4a1ff584e7c7c4cdd2"},"schema_version":"1.0","source":{"id":"2501.03144","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.03144","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"arxiv_version","alias_value":"2501.03144v2","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.03144","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_12","alias_value":"5WHG2ITEY3SV","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_16","alias_value":"5WHG2ITEY3SVA5OR","created_at":"2026-07-05T09:59:02Z"},{"alias_kind":"pith_short_8","alias_value":"5WHG2ITE","created_at":"2026-07-05T09:59:02Z"}],"graph_snapshots":[{"event_id":"sha256:b7a9f27aefaac901cf98d71bdc38a9ad5796c5a879f6a0d3186ba76ef4a7b900","target":"graph","created_at":"2026-07-05T09:59:02Z","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/2501.03144/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum state tomography (QST) remains the prevailing method for benchmarking and verifying quantum devices; however, its application to large quantum systems is rendered impractical due to the exponential growth in both the required number of total state copies and classical computational resources. Recently, the classical shadow (CS) method has been introduced as a more computationally efficient alternative, capable of accurately predicting key quantum state properties. Despite its advantages, a critical question remains as to whether the CS method can be extended to perform QST with guarant","authors_text":"Brian T. Kirby, Joseph M. Lukens, Zhen Qin, Zhihui Zhu","cross_cats":["math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-06T17:09:38Z","title":"Enhancing Quantum State Reconstruction with Structured Classical Shadows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.03144","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":"sha256:5d03803f827f09cfac1c0972188af7c35f97c4d68ac1e6b6c344baca66ecc936","target":"record","created_at":"2026-07-05T09:59:02Z","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":"6c0a0efbd9a135b818d7f6fff5f0faabb266ceb81499b711f4af05d33decd6f9","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-06T17:09:38Z","title_canon_sha256":"5b377cf1101dee3a6a1fd9f2afd5db6c196d72771f213b4a1ff584e7c7c4cdd2"},"schema_version":"1.0","source":{"id":"2501.03144","kind":"arxiv","version":2}},"canonical_sha256":"ed8e6d2264c6e55075d135cf3e2efbb31f2bdf48bfb1e011da032ba51c6cf22f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed8e6d2264c6e55075d135cf3e2efbb31f2bdf48bfb1e011da032ba51c6cf22f","first_computed_at":"2026-07-05T09:59:02.504436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:59:02.504436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JlE9KvmiHD4yuL/PkFSZOD/GaAe4XSkmz1P0qF42I0YQscVzH2/TRYqKMUNoFCidj3/o0Ayt2oJ/HquDJG9HCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:59:02.504925Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.03144","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d03803f827f09cfac1c0972188af7c35f97c4d68ac1e6b6c344baca66ecc936","sha256:b7a9f27aefaac901cf98d71bdc38a9ad5796c5a879f6a0d3186ba76ef4a7b900"],"state_sha256":"316819cc7f002d747243cf9f401bcd4d6d57bb1111c84c4759d981e42d1c2e7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FnNYMbLjWkVZLGQPmRlxaD5/zvmAr920pyib0hi5mFnhg75e5ijcQJ2W7LfXND9yoV3AIK0fKiDzPgxp8LerDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T23:15:28.768270Z","bundle_sha256":"de73623aefe17410bfd747deaeb4362580b3a2d0e767311f46f31b4110ffdc9a"}}