{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:2P6BHSA4RXKRYEN2B26NFBRTX5","short_pith_number":"pith:2P6BHSA4","schema_version":"1.0","canonical_sha256":"d3fc13c81c8dd51c11ba0ebcd28633bf489e50522782219a2a897059e4c426fb","source":{"kind":"arxiv","id":"2605.29774","version":1},"attestation_state":"computed","paper":{"title":"Quantum algorithms for density functional theory with minimal readout","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hirofumi Nishi, Hiroki Sakagami, Satoshi Hirose, Taichi Kosugi, Tatsuki Oikawa, Tatsuya Okayama, Yuansheng Zhao, Yu-ichiro Matsushita","submitted_at":"2026-05-28T11:19:49Z","abstract_excerpt":"While quantum computers have shown significant promise for electronic structure calculations, their potential to accelerate density functional theory (DFT) calculations remains unclear. In this work, we present a qubit-efficient encoding scheme for wavefunctions in Kohn--Sham (KS) DFT, together with a quantum algorithm that computes all occupied orbitals simultaneously. We further show that our algorithm is particularly well suited to the Harris functional, enabling the total energy to be evaluated with a potential exponential speedup over classical approaches by entirely avoiding the costly r"},"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":"2605.29774","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-05-28T11:19:49Z","cross_cats_sorted":[],"title_canon_sha256":"abf1c1a3745a6b442d57212440f284ee36989db0f4864364840298555dbe5927","abstract_canon_sha256":"73d2e7fd2945cf8688809355da05efb8774e2f3a4cd7b47a53cf8f2620b6f911"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-29T02:05:25.796215Z","signature_b64":"dpCBiIoNpZIYg0OpUWzYJdPtIoAVbP+gzGihSCc5nX715WdpkWdeFohmZk9P+yfdhzCTJarhaKec3yYfC41RAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3fc13c81c8dd51c11ba0ebcd28633bf489e50522782219a2a897059e4c426fb","last_reissued_at":"2026-05-29T02:05:25.795679Z","signature_status":"signed_v1","first_computed_at":"2026-05-29T02:05:25.795679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum algorithms for density functional theory with minimal readout","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hirofumi Nishi, Hiroki Sakagami, Satoshi Hirose, Taichi Kosugi, Tatsuki Oikawa, Tatsuya Okayama, Yuansheng Zhao, Yu-ichiro Matsushita","submitted_at":"2026-05-28T11:19:49Z","abstract_excerpt":"While quantum computers have shown significant promise for electronic structure calculations, their potential to accelerate density functional theory (DFT) calculations remains unclear. In this work, we present a qubit-efficient encoding scheme for wavefunctions in Kohn--Sham (KS) DFT, together with a quantum algorithm that computes all occupied orbitals simultaneously. We further show that our algorithm is particularly well suited to the Harris functional, enabling the total energy to be evaluated with a potential exponential speedup over classical approaches by entirely avoiding the costly r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.29774","kind":"arxiv","version":1},"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/2605.29774/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":"2605.29774","created_at":"2026-05-29T02:05:25.795740+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.29774v1","created_at":"2026-05-29T02:05:25.795740+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.29774","created_at":"2026-05-29T02:05:25.795740+00:00"},{"alias_kind":"pith_short_12","alias_value":"2P6BHSA4RXKR","created_at":"2026-05-29T02:05:25.795740+00:00"},{"alias_kind":"pith_short_16","alias_value":"2P6BHSA4RXKRYEN2","created_at":"2026-05-29T02:05:25.795740+00:00"},{"alias_kind":"pith_short_8","alias_value":"2P6BHSA4","created_at":"2026-05-29T02:05:25.795740+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/2P6BHSA4RXKRYEN2B26NFBRTX5","json":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5.json","graph_json":"https://pith.science/api/pith-number/2P6BHSA4RXKRYEN2B26NFBRTX5/graph.json","events_json":"https://pith.science/api/pith-number/2P6BHSA4RXKRYEN2B26NFBRTX5/events.json","paper":"https://pith.science/paper/2P6BHSA4"},"agent_actions":{"view_html":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5","download_json":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5.json","view_paper":"https://pith.science/paper/2P6BHSA4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.29774&json=true","fetch_graph":"https://pith.science/api/pith-number/2P6BHSA4RXKRYEN2B26NFBRTX5/graph.json","fetch_events":"https://pith.science/api/pith-number/2P6BHSA4RXKRYEN2B26NFBRTX5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5/action/storage_attestation","attest_author":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5/action/author_attestation","sign_citation":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5/action/citation_signature","submit_replication":"https://pith.science/pith/2P6BHSA4RXKRYEN2B26NFBRTX5/action/replication_record"}},"created_at":"2026-05-29T02:05:25.795740+00:00","updated_at":"2026-05-29T02:05:25.795740+00:00"}