{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:5WJXJNUGBB23CUAQIGSSGMZOUD","short_pith_number":"pith:5WJXJNUG","canonical_record":{"source":{"id":"2505.18027","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-23T15:34:02Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"52e71d7dd62f7305af0f7791a2a8600be76a8a7acbfe75bda14467725b6143ea","abstract_canon_sha256":"00daed635fb20724efe348b593a2c803cfdd80ccbf35417cc39ebbb88b83b5d3"},"schema_version":"1.0"},"canonical_sha256":"ed9374b6860875b1501041a523332ea0c817b4db7c39c8ad871ecbd088872d62","source":{"kind":"arxiv","id":"2505.18027","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.18027","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"arxiv_version","alias_value":"2505.18027v1","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.18027","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_12","alias_value":"5WJXJNUGBB23","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_16","alias_value":"5WJXJNUGBB23CUAQ","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_8","alias_value":"5WJXJNUG","created_at":"2026-07-05T12:00:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:5WJXJNUGBB23CUAQIGSSGMZOUD","target":"record","payload":{"canonical_record":{"source":{"id":"2505.18027","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-23T15:34:02Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"52e71d7dd62f7305af0f7791a2a8600be76a8a7acbfe75bda14467725b6143ea","abstract_canon_sha256":"00daed635fb20724efe348b593a2c803cfdd80ccbf35417cc39ebbb88b83b5d3"},"schema_version":"1.0"},"canonical_sha256":"ed9374b6860875b1501041a523332ea0c817b4db7c39c8ad871ecbd088872d62","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:00:01.351563Z","signature_b64":"Wn8Bj6t9A44MMsM3oNOgy9Rml56W7zKOLbmCNZ+w1e6ggJchtKbjO0W5Dg3m3rdfjanrysHcKY3/hqHbX/+TDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed9374b6860875b1501041a523332ea0c817b4db7c39c8ad871ecbd088872d62","last_reissued_at":"2026-07-05T12:00:01.351199Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:00:01.351199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.18027","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T12:00:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"twFdb9YpCvRPqm5JDgEH4f3MGPf74rA3EhBCB2Z/wATq4PpNr0GphYP8q+raVM7PbQQ0ULCZeQzVfde8FTBCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T20:33:06.838109Z"},"content_sha256":"2035c89471de3024d030525856509ffee4ffa07bccf18c542a217eca487dbf33","schema_version":"1.0","event_id":"sha256:2035c89471de3024d030525856509ffee4ffa07bccf18c542a217eca487dbf33"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:5WJXJNUGBB23CUAQIGSSGMZOUD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A variational quantum eigensolver tailored to multi-band tight-binding simulations of electronic structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Dongkeun Lee, Hoon Ryu","submitted_at":"2025-05-23T15:34:02Z","abstract_excerpt":"We propose a cost-efficient measurement scheme of the variational quantum eigensolver (VQE) for atomistic simulations of electronic structures based on a tight-binding (TB) theory. Leveraging the lattice geometry of a material domain, the sparse TB Hamiltonian is constructed in a bottom-up manner and is represented as a linear combination of the standard-basis (SB) operators. The cost function is evaluated with an extended version of the Bell measurement circuit that can simultaneously measure multiple SB operators and therefore reduces the number of circuits required bythe evaluation process."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.18027","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/2505.18027/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":"2026-07-05T12:00:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5MUyRbeW7WIVE5BqP4f6zj0lWTVXFLdjrCG+fFIiWHTeI357iAHbYTdUHnBi/W1bnENa78I8tydZdJqq2I3nDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T20:33:06.838730Z"},"content_sha256":"56592f2480645927e97dbcbb809a02513f43aae853f1094922dc8200ed0efe83","schema_version":"1.0","event_id":"sha256:56592f2480645927e97dbcbb809a02513f43aae853f1094922dc8200ed0efe83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/bundle.json","state_url":"https://pith.science/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/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":"2026-08-19T20:33:06Z","links":{"resolver":"https://pith.science/pith/5WJXJNUGBB23CUAQIGSSGMZOUD","bundle":"https://pith.science/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/bundle.json","state":"https://pith.science/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5WJXJNUGBB23CUAQIGSSGMZOUD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5WJXJNUGBB23CUAQIGSSGMZOUD","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":"00daed635fb20724efe348b593a2c803cfdd80ccbf35417cc39ebbb88b83b5d3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-23T15:34:02Z","title_canon_sha256":"52e71d7dd62f7305af0f7791a2a8600be76a8a7acbfe75bda14467725b6143ea"},"schema_version":"1.0","source":{"id":"2505.18027","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.18027","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"arxiv_version","alias_value":"2505.18027v1","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.18027","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_12","alias_value":"5WJXJNUGBB23","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_16","alias_value":"5WJXJNUGBB23CUAQ","created_at":"2026-07-05T12:00:01Z"},{"alias_kind":"pith_short_8","alias_value":"5WJXJNUG","created_at":"2026-07-05T12:00:01Z"}],"graph_snapshots":[{"event_id":"sha256:56592f2480645927e97dbcbb809a02513f43aae853f1094922dc8200ed0efe83","target":"graph","created_at":"2026-07-05T12:00:01Z","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/2505.18027/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a cost-efficient measurement scheme of the variational quantum eigensolver (VQE) for atomistic simulations of electronic structures based on a tight-binding (TB) theory. Leveraging the lattice geometry of a material domain, the sparse TB Hamiltonian is constructed in a bottom-up manner and is represented as a linear combination of the standard-basis (SB) operators. The cost function is evaluated with an extended version of the Bell measurement circuit that can simultaneously measure multiple SB operators and therefore reduces the number of circuits required bythe evaluation process.","authors_text":"Dongkeun Lee, Hoon Ryu","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-23T15:34:02Z","title":"A variational quantum eigensolver tailored to multi-band tight-binding simulations of electronic structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.18027","kind":"arxiv","version":1},"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":"sha256:2035c89471de3024d030525856509ffee4ffa07bccf18c542a217eca487dbf33","target":"record","created_at":"2026-07-05T12:00:01Z","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":"00daed635fb20724efe348b593a2c803cfdd80ccbf35417cc39ebbb88b83b5d3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-23T15:34:02Z","title_canon_sha256":"52e71d7dd62f7305af0f7791a2a8600be76a8a7acbfe75bda14467725b6143ea"},"schema_version":"1.0","source":{"id":"2505.18027","kind":"arxiv","version":1}},"canonical_sha256":"ed9374b6860875b1501041a523332ea0c817b4db7c39c8ad871ecbd088872d62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed9374b6860875b1501041a523332ea0c817b4db7c39c8ad871ecbd088872d62","first_computed_at":"2026-07-05T12:00:01.351199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:00:01.351199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Wn8Bj6t9A44MMsM3oNOgy9Rml56W7zKOLbmCNZ+w1e6ggJchtKbjO0W5Dg3m3rdfjanrysHcKY3/hqHbX/+TDg==","signature_status":"signed_v1","signed_at":"2026-07-05T12:00:01.351563Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.18027","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2035c89471de3024d030525856509ffee4ffa07bccf18c542a217eca487dbf33","sha256:56592f2480645927e97dbcbb809a02513f43aae853f1094922dc8200ed0efe83"],"state_sha256":"1646d7ec73bb8283a83c038849e86dedec0049bb5165bb3e1b753d9c58352c38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ary85Awmxlz/O5B0LSJk8DjL7/dssbdjmCbB5jx7RJii4n+SCp84se6/Aj2tEAGNSWAokGKdq5I5AGKwlXjJBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T20:33:06.842807Z","bundle_sha256":"fb39c15a51fcdab67175a0f7273ea0eac55ee719533cf7a7398f91b7d3fd6982"}}