{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:H2GI27ZQIIQ5UVT344AD2YMUQD","short_pith_number":"pith:H2GI27ZQ","canonical_record":{"source":{"id":"2305.04425","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-05-08T02:33:33Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"8c1a572f2da815822a8934a70d13d91ae5482bd08f8762c7bbcfa017a7bee88f","abstract_canon_sha256":"95245a8a164f37b765f50ddefe66018677c2960405b1e9fba19c1175f6e36c2a"},"schema_version":"1.0"},"canonical_sha256":"3e8c8d7f304221da567be7003d619480de034ab5abc67b52029805c311a0f55e","source":{"kind":"arxiv","id":"2305.04425","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.04425","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"2305.04425v3","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.04425","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"H2GI27ZQIIQ5","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_16","alias_value":"H2GI27ZQIIQ5UVT3","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_8","alias_value":"H2GI27ZQ","created_at":"2026-07-05T06:45:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:H2GI27ZQIIQ5UVT344AD2YMUQD","target":"record","payload":{"canonical_record":{"source":{"id":"2305.04425","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-05-08T02:33:33Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"8c1a572f2da815822a8934a70d13d91ae5482bd08f8762c7bbcfa017a7bee88f","abstract_canon_sha256":"95245a8a164f37b765f50ddefe66018677c2960405b1e9fba19c1175f6e36c2a"},"schema_version":"1.0"},"canonical_sha256":"3e8c8d7f304221da567be7003d619480de034ab5abc67b52029805c311a0f55e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:45:17.043130Z","signature_b64":"kfHWgxP9y6Jceo9eDg5BliNCw863GlswhmtP3zXlN288S5cmN2TlvGXpa5lTJBPLRTI0U5E4X7mQ8Rd9iuFbCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e8c8d7f304221da567be7003d619480de034ab5abc67b52029805c311a0f55e","last_reissued_at":"2026-07-05T06:45:17.042650Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:45:17.042650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.04425","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":"2026-07-05T06:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f86LIqjVQSpZkkkfFjib3pEDgepxSSGSp2s7oj9M6fvI3AgGXlS0XSHo7oEzkBg6WaTthLvbboFjBVostYJLBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T18:33:05.433142Z"},"content_sha256":"4c12ad59a6508f2a17c60b0fcf2f8648483c55c830ff676f1afb2be8a3be537e","schema_version":"1.0","event_id":"sha256:4c12ad59a6508f2a17c60b0fcf2f8648483c55c830ff676f1afb2be8a3be537e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:H2GI27ZQIIQ5UVT344AD2YMUQD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modular Cluster Circuits for the Variational Quantum Eigensolver","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"quant-ph","authors_text":"Gerhard W. Dueck, Seyed Ehsan Ghasempouri, Stijn De Baerdemacker","submitted_at":"2023-05-08T02:33:33Z","abstract_excerpt":"The variational quantum eigensolver (VQE) algorithm recently became a popular method to compute quantum chemical properties of molecules on noisy intermediate scale quantum (NISQ) devices. In order to avoid noise accumulation from the NISQ device in the circuit, it is important to keep the so-called quantum depth of the circuit at a minimum, defined as the minimum number of quantum gates that need to be operated sequentially. In the present work, we introduce a modular 2-qubit cluster circuit that allows for the design of a shallow-depth quantum circuit compared to previously proposed architec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.04425","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/2305.04425/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":"2026-07-05T06:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+T/XNS/UAstFWJ/a57XqrI0qd1adbRNUes+kHJUpZ4zV3FcfWbguk3vQLUHR13svRPf1TgLP8VQk+CTVxXovBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T18:33:05.434201Z"},"content_sha256":"4bfca058dbd6b2ba519729483f19c35e61ef8b22e999c0009b368438f55ccb06","schema_version":"1.0","event_id":"sha256:4bfca058dbd6b2ba519729483f19c35e61ef8b22e999c0009b368438f55ccb06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/bundle.json","state_url":"https://pith.science/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/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":"2026-08-16T18:33:05Z","links":{"resolver":"https://pith.science/pith/H2GI27ZQIIQ5UVT344AD2YMUQD","bundle":"https://pith.science/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/bundle.json","state":"https://pith.science/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2GI27ZQIIQ5UVT344AD2YMUQD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:H2GI27ZQIIQ5UVT344AD2YMUQD","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":"95245a8a164f37b765f50ddefe66018677c2960405b1e9fba19c1175f6e36c2a","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-05-08T02:33:33Z","title_canon_sha256":"8c1a572f2da815822a8934a70d13d91ae5482bd08f8762c7bbcfa017a7bee88f"},"schema_version":"1.0","source":{"id":"2305.04425","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.04425","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"2305.04425v3","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.04425","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"H2GI27ZQIIQ5","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_16","alias_value":"H2GI27ZQIIQ5UVT3","created_at":"2026-07-05T06:45:17Z"},{"alias_kind":"pith_short_8","alias_value":"H2GI27ZQ","created_at":"2026-07-05T06:45:17Z"}],"graph_snapshots":[{"event_id":"sha256:4bfca058dbd6b2ba519729483f19c35e61ef8b22e999c0009b368438f55ccb06","target":"graph","created_at":"2026-07-05T06:45:17Z","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/2305.04425/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The variational quantum eigensolver (VQE) algorithm recently became a popular method to compute quantum chemical properties of molecules on noisy intermediate scale quantum (NISQ) devices. In order to avoid noise accumulation from the NISQ device in the circuit, it is important to keep the so-called quantum depth of the circuit at a minimum, defined as the minimum number of quantum gates that need to be operated sequentially. In the present work, we introduce a modular 2-qubit cluster circuit that allows for the design of a shallow-depth quantum circuit compared to previously proposed architec","authors_text":"Gerhard W. Dueck, Seyed Ehsan Ghasempouri, Stijn De Baerdemacker","cross_cats":["physics.chem-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-05-08T02:33:33Z","title":"Modular Cluster Circuits for the Variational Quantum Eigensolver"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.04425","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":"sha256:4c12ad59a6508f2a17c60b0fcf2f8648483c55c830ff676f1afb2be8a3be537e","target":"record","created_at":"2026-07-05T06:45:17Z","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":"95245a8a164f37b765f50ddefe66018677c2960405b1e9fba19c1175f6e36c2a","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-05-08T02:33:33Z","title_canon_sha256":"8c1a572f2da815822a8934a70d13d91ae5482bd08f8762c7bbcfa017a7bee88f"},"schema_version":"1.0","source":{"id":"2305.04425","kind":"arxiv","version":3}},"canonical_sha256":"3e8c8d7f304221da567be7003d619480de034ab5abc67b52029805c311a0f55e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e8c8d7f304221da567be7003d619480de034ab5abc67b52029805c311a0f55e","first_computed_at":"2026-07-05T06:45:17.042650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:45:17.042650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kfHWgxP9y6Jceo9eDg5BliNCw863GlswhmtP3zXlN288S5cmN2TlvGXpa5lTJBPLRTI0U5E4X7mQ8Rd9iuFbCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:45:17.043130Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.04425","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c12ad59a6508f2a17c60b0fcf2f8648483c55c830ff676f1afb2be8a3be537e","sha256:4bfca058dbd6b2ba519729483f19c35e61ef8b22e999c0009b368438f55ccb06"],"state_sha256":"09b9e96579879ff3bf714f91ca7174d3bfef66d80d1ea6896708373e7e19d6d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TqbMRAFLQs4U7jhVdr7QefP6dxyAxpvEy7aMgnJ0tZuiC7vXvfO/D8Cbpy3OXdZ57/rM7dVCc4apjJC/Xe/8AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T18:33:05.504327Z","bundle_sha256":"fb8bc659a92f3d2d61256a0559b2a7595e4c1536da1f3e6ebd2002ae58b1f960"}}