{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7G4WXGZVTRILEEWHLXVWC3RDOI","short_pith_number":"pith:7G4WXGZV","canonical_record":{"source":{"id":"1510.04048","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-14T11:31:58Z","cross_cats_sorted":[],"title_canon_sha256":"6ac4bc17a2314086220ccd41a2367cabadde451246b2a24a33d26957d4e27e9e","abstract_canon_sha256":"c70ed3c6025783257e3815ef87eeec62db59ff512915d528003069e0ba7df534"},"schema_version":"1.0"},"canonical_sha256":"f9b96b9b359c50b212c75deb616e2372086391d4c336ffc2bb71a862554fb9fe","source":{"kind":"arxiv","id":"1510.04048","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04048","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04048v3","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04048","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"pith_short_12","alias_value":"7G4WXGZVTRIL","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7G4WXGZVTRILEEWH","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7G4WXGZV","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7G4WXGZVTRILEEWHLXVWC3RDOI","target":"record","payload":{"canonical_record":{"source":{"id":"1510.04048","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-14T11:31:58Z","cross_cats_sorted":[],"title_canon_sha256":"6ac4bc17a2314086220ccd41a2367cabadde451246b2a24a33d26957d4e27e9e","abstract_canon_sha256":"c70ed3c6025783257e3815ef87eeec62db59ff512915d528003069e0ba7df534"},"schema_version":"1.0"},"canonical_sha256":"f9b96b9b359c50b212c75deb616e2372086391d4c336ffc2bb71a862554fb9fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:43.388212Z","signature_b64":"YzecE7sCop/oXGZ6SmE9h/GM4WzqhPjL2Dcm08m7rAOXns4jr2bKYFUbEPTMSULwHU6VC+kSU4JAXMwDyTJ4CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f9b96b9b359c50b212c75deb616e2372086391d4c336ffc2bb71a862554fb9fe","last_reissued_at":"2026-05-18T01:12:43.387845Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:43.387845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.04048","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":"2026-05-18T01:12:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cnrUjSjAvMMadWiQgKlXQUg90MYRr3trDJb8KYz8vVBgp5yxDszTeVqvNaovO/DVxV1qz0B8O1TPEO9RQ/5sAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:31:01.404754Z"},"content_sha256":"13e3c22b59ec23576b817408e69166a6b38839434202c7961b0ae5e93e4ce3fe","schema_version":"1.0","event_id":"sha256:13e3c22b59ec23576b817408e69166a6b38839434202c7961b0ae5e93e4ce3fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7G4WXGZVTRILEEWHLXVWC3RDOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimizing qubit resources for quantum chemistry simulations in second quantization on a quantum computer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andreas Fuhrer, Ivano Tavernelli, Nikolaj Moll, Peter Staar","submitted_at":"2015-10-14T11:31:58Z","abstract_excerpt":"Quantum chemistry simulations on a quantum computer suffer from the overhead needed for encoding the fermionic problem in a bosonic system of qubits. By exploiting the block diagonality of a fermionic Hamiltonian, we show that the number of required qubits can be reduced by a factor of two or more. There is no need to go into the basis of the Hilbert space for this reduction because all operations can be performed in the operator space. The scheme is conceived as a pre-computational step that would be performed on a classical computer prior to the actual quantum simulation. We apply this schem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04048","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":""},"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":"2026-05-18T01:12:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6kFEvNl+FvjWokuJ3kJarrdxh2AhXNk1pgSPfYP+3Or2QcvXrSTkRmmkzbGwsBaw/F07s0i3zhpzAFdQWZvODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:31:01.405108Z"},"content_sha256":"cb89958cd50155e1cb0f1efa54b81dc00b186abec185423a43645e2ff8fd17af","schema_version":"1.0","event_id":"sha256:cb89958cd50155e1cb0f1efa54b81dc00b186abec185423a43645e2ff8fd17af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/bundle.json","state_url":"https://pith.science/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/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":"2026-05-31T02:31:01Z","links":{"resolver":"https://pith.science/pith/7G4WXGZVTRILEEWHLXVWC3RDOI","bundle":"https://pith.science/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/bundle.json","state":"https://pith.science/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7G4WXGZVTRILEEWHLXVWC3RDOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7G4WXGZVTRILEEWHLXVWC3RDOI","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":"c70ed3c6025783257e3815ef87eeec62db59ff512915d528003069e0ba7df534","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-14T11:31:58Z","title_canon_sha256":"6ac4bc17a2314086220ccd41a2367cabadde451246b2a24a33d26957d4e27e9e"},"schema_version":"1.0","source":{"id":"1510.04048","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04048","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04048v3","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04048","created_at":"2026-05-18T01:12:43Z"},{"alias_kind":"pith_short_12","alias_value":"7G4WXGZVTRIL","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7G4WXGZVTRILEEWH","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7G4WXGZV","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:cb89958cd50155e1cb0f1efa54b81dc00b186abec185423a43645e2ff8fd17af","target":"graph","created_at":"2026-05-18T01:12:43Z","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"},"paper":{"abstract_excerpt":"Quantum chemistry simulations on a quantum computer suffer from the overhead needed for encoding the fermionic problem in a bosonic system of qubits. By exploiting the block diagonality of a fermionic Hamiltonian, we show that the number of required qubits can be reduced by a factor of two or more. There is no need to go into the basis of the Hilbert space for this reduction because all operations can be performed in the operator space. The scheme is conceived as a pre-computational step that would be performed on a classical computer prior to the actual quantum simulation. We apply this schem","authors_text":"Andreas Fuhrer, Ivano Tavernelli, Nikolaj Moll, Peter Staar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-14T11:31:58Z","title":"Optimizing qubit resources for quantum chemistry simulations in second quantization on a quantum computer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04048","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":"sha256:13e3c22b59ec23576b817408e69166a6b38839434202c7961b0ae5e93e4ce3fe","target":"record","created_at":"2026-05-18T01:12:43Z","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":"c70ed3c6025783257e3815ef87eeec62db59ff512915d528003069e0ba7df534","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-14T11:31:58Z","title_canon_sha256":"6ac4bc17a2314086220ccd41a2367cabadde451246b2a24a33d26957d4e27e9e"},"schema_version":"1.0","source":{"id":"1510.04048","kind":"arxiv","version":3}},"canonical_sha256":"f9b96b9b359c50b212c75deb616e2372086391d4c336ffc2bb71a862554fb9fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f9b96b9b359c50b212c75deb616e2372086391d4c336ffc2bb71a862554fb9fe","first_computed_at":"2026-05-18T01:12:43.387845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:43.387845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YzecE7sCop/oXGZ6SmE9h/GM4WzqhPjL2Dcm08m7rAOXns4jr2bKYFUbEPTMSULwHU6VC+kSU4JAXMwDyTJ4CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:43.388212Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.04048","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13e3c22b59ec23576b817408e69166a6b38839434202c7961b0ae5e93e4ce3fe","sha256:cb89958cd50155e1cb0f1efa54b81dc00b186abec185423a43645e2ff8fd17af"],"state_sha256":"479b4d77261bff6997ff1e05795edd79ccd94ca791a3ecc636195dc666fc31ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7hAn63kgTvaR4QX50t9H+6/t7R69gqMuwn9aA53tnHApXzp4EJh0hN9KX7YKZ33QSctOGKhhdNtqN40YvOxtBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T02:31:01.407276Z","bundle_sha256":"42fb416d26a9909cee18d012625a54211b69f8485a7dad8061e6941a8b0f5a0d"}}