{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:2PBY32MB6RZ4R37YE27ECR6ULL","short_pith_number":"pith:2PBY32MB","canonical_record":{"source":{"id":"2404.19386","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-04-30T09:20:58Z","cross_cats_sorted":[],"title_canon_sha256":"8d425cf648348f65aefad8dc56701297d28151fdac7555479dda6fc59925063b","abstract_canon_sha256":"822a252b6e423ca2d51ae1ede10b8bf4a8897b1850233e2cffdfff47aabe03f9"},"schema_version":"1.0"},"canonical_sha256":"d3c38de981f473c8eff826be4147d45af349f3cf6d744cedc7d19fe9b8491519","source":{"kind":"arxiv","id":"2404.19386","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19386","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19386v2","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19386","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_12","alias_value":"2PBY32MB6RZ4","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_16","alias_value":"2PBY32MB6RZ4R37Y","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_8","alias_value":"2PBY32MB","created_at":"2026-07-05T08:46:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:2PBY32MB6RZ4R37YE27ECR6ULL","target":"record","payload":{"canonical_record":{"source":{"id":"2404.19386","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-04-30T09:20:58Z","cross_cats_sorted":[],"title_canon_sha256":"8d425cf648348f65aefad8dc56701297d28151fdac7555479dda6fc59925063b","abstract_canon_sha256":"822a252b6e423ca2d51ae1ede10b8bf4a8897b1850233e2cffdfff47aabe03f9"},"schema_version":"1.0"},"canonical_sha256":"d3c38de981f473c8eff826be4147d45af349f3cf6d744cedc7d19fe9b8491519","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:46:24.607016Z","signature_b64":"AUvwJanNNDBEfpt0Q3v+Qa3pmCvSZqI/vmkykQKpvII06S3cUKbtfrtdl6+cFXyE2cXoYo1kbAir6aDlBeGPDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3c38de981f473c8eff826be4147d45af349f3cf6d744cedc7d19fe9b8491519","last_reissued_at":"2026-07-05T08:46:24.606540Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:46:24.606540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.19386","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":"2026-07-05T08:46:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U2rHkcKzjdseGzrsSnGzJ1c6+H3BOIVpYtuE2YvBw1K9k4ALom/gUkw49YMnMNOxzUC3XLCG55fFUCC4tuAABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:20:38.765921Z"},"content_sha256":"307bd9c35f61ba65a549464b4535824748aef3357dbd5778ca6b22645d6a1957","schema_version":"1.0","event_id":"sha256:307bd9c35f61ba65a549464b4535824748aef3357dbd5778ca6b22645d6a1957"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:2PBY32MB6RZ4R37YE27ECR6ULL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Weighted Feedback-Based Quantum Algorithm for Excited States Calculation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"\\\"Ozkan Karabacak, Rafal Wisniewski, Salahuddin Abdul Rahman","submitted_at":"2024-04-30T09:20:58Z","abstract_excerpt":"Drawing inspiration from the Lyapunov control technique for quantum systems, feedback-based quantum algorithms have been proposed for calculating the ground states of Hamiltonians. In this work, we consider extending these algorithms to tackle calculating excited states. Inspired by the weighted subspace-search variational quantum eigensolver algorithm, we propose a novel weighted feedback-based quantum algorithm for excited state calculation. We show that depending on how we design the weights and the feedback law, we can prepare the $p$th excited state or lowest energy states up to the $p$th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19386","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/2404.19386/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":"2026-07-05T08:46:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8gzfER7gG1XvAEMuJdmc45tl4m6Xbm2eyIknwG/fcf2TIZP408WuzvInbpIcs+BR8UqzpDiN03/LvXaqrVxIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:20:38.766287Z"},"content_sha256":"d77cce21ad0f1eb73058bebe44147e10df660872db1d05dc9d2c0d95a43fa601","schema_version":"1.0","event_id":"sha256:d77cce21ad0f1eb73058bebe44147e10df660872db1d05dc9d2c0d95a43fa601"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PBY32MB6RZ4R37YE27ECR6ULL/bundle.json","state_url":"https://pith.science/pith/2PBY32MB6RZ4R37YE27ECR6ULL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PBY32MB6RZ4R37YE27ECR6ULL/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":"2026-07-06T16:20:38Z","links":{"resolver":"https://pith.science/pith/2PBY32MB6RZ4R37YE27ECR6ULL","bundle":"https://pith.science/pith/2PBY32MB6RZ4R37YE27ECR6ULL/bundle.json","state":"https://pith.science/pith/2PBY32MB6RZ4R37YE27ECR6ULL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PBY32MB6RZ4R37YE27ECR6ULL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:2PBY32MB6RZ4R37YE27ECR6ULL","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":"822a252b6e423ca2d51ae1ede10b8bf4a8897b1850233e2cffdfff47aabe03f9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-04-30T09:20:58Z","title_canon_sha256":"8d425cf648348f65aefad8dc56701297d28151fdac7555479dda6fc59925063b"},"schema_version":"1.0","source":{"id":"2404.19386","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19386","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19386v2","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19386","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_12","alias_value":"2PBY32MB6RZ4","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_16","alias_value":"2PBY32MB6RZ4R37Y","created_at":"2026-07-05T08:46:24Z"},{"alias_kind":"pith_short_8","alias_value":"2PBY32MB","created_at":"2026-07-05T08:46:24Z"}],"graph_snapshots":[{"event_id":"sha256:d77cce21ad0f1eb73058bebe44147e10df660872db1d05dc9d2c0d95a43fa601","target":"graph","created_at":"2026-07-05T08:46:24Z","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/2404.19386/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Drawing inspiration from the Lyapunov control technique for quantum systems, feedback-based quantum algorithms have been proposed for calculating the ground states of Hamiltonians. In this work, we consider extending these algorithms to tackle calculating excited states. Inspired by the weighted subspace-search variational quantum eigensolver algorithm, we propose a novel weighted feedback-based quantum algorithm for excited state calculation. We show that depending on how we design the weights and the feedback law, we can prepare the $p$th excited state or lowest energy states up to the $p$th","authors_text":"\\\"Ozkan Karabacak, Rafal Wisniewski, Salahuddin Abdul Rahman","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-04-30T09:20:58Z","title":"Weighted Feedback-Based Quantum Algorithm for Excited States Calculation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19386","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":"sha256:307bd9c35f61ba65a549464b4535824748aef3357dbd5778ca6b22645d6a1957","target":"record","created_at":"2026-07-05T08:46:24Z","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":"822a252b6e423ca2d51ae1ede10b8bf4a8897b1850233e2cffdfff47aabe03f9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-04-30T09:20:58Z","title_canon_sha256":"8d425cf648348f65aefad8dc56701297d28151fdac7555479dda6fc59925063b"},"schema_version":"1.0","source":{"id":"2404.19386","kind":"arxiv","version":2}},"canonical_sha256":"d3c38de981f473c8eff826be4147d45af349f3cf6d744cedc7d19fe9b8491519","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3c38de981f473c8eff826be4147d45af349f3cf6d744cedc7d19fe9b8491519","first_computed_at":"2026-07-05T08:46:24.606540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:46:24.606540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AUvwJanNNDBEfpt0Q3v+Qa3pmCvSZqI/vmkykQKpvII06S3cUKbtfrtdl6+cFXyE2cXoYo1kbAir6aDlBeGPDw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:46:24.607016Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.19386","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:307bd9c35f61ba65a549464b4535824748aef3357dbd5778ca6b22645d6a1957","sha256:d77cce21ad0f1eb73058bebe44147e10df660872db1d05dc9d2c0d95a43fa601"],"state_sha256":"343ed2a5cba70c04fa195cfa2800b019a0ff448d9e287f06a1e0e51f419eac9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+giidvPBDuFazyWvebnexwlasumr/uJspGMsiMmHNdZncLklDX4RQ4mudO6uIIYznfCvZ0PZo7LLpEzT0W4CDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T16:20:38.768526Z","bundle_sha256":"cf7a13817165af104ae1c3b75bcb4f122c56bc2beaa8be3ffd25000c9c0d7107"}}