{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:SK4AUDJ6N5XGVSWIRLPL6XUXQV","short_pith_number":"pith:SK4AUDJ6","canonical_record":{"source":{"id":"2112.05937","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-11T09:22:25Z","cross_cats_sorted":[],"title_canon_sha256":"52f8346ff2f501e988f5dab9dbffa0c90da09a8dced2b484ed9618901a20bccf","abstract_canon_sha256":"38acd2f4039009a06feabf2e2908ebe5b117a1cd880106c5489300a3eadf6d2d"},"schema_version":"1.0"},"canonical_sha256":"92b80a0d3e6f6e6acac88adebf5e978554f7f08a66bc2f7b5dca95f0b8654660","source":{"kind":"arxiv","id":"2112.05937","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05937","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05937v1","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05937","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_12","alias_value":"SK4AUDJ6N5XG","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_16","alias_value":"SK4AUDJ6N5XGVSWI","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_8","alias_value":"SK4AUDJ6","created_at":"2026-07-05T05:04:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:SK4AUDJ6N5XGVSWIRLPL6XUXQV","target":"record","payload":{"canonical_record":{"source":{"id":"2112.05937","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-11T09:22:25Z","cross_cats_sorted":[],"title_canon_sha256":"52f8346ff2f501e988f5dab9dbffa0c90da09a8dced2b484ed9618901a20bccf","abstract_canon_sha256":"38acd2f4039009a06feabf2e2908ebe5b117a1cd880106c5489300a3eadf6d2d"},"schema_version":"1.0"},"canonical_sha256":"92b80a0d3e6f6e6acac88adebf5e978554f7f08a66bc2f7b5dca95f0b8654660","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:04:26.480402Z","signature_b64":"3q/jcYZ1FtkrjS0y04AU4djijnNuzsXZXL7mlAgAeLCJc/JYKTTs00Pj0jObd/5B/3j95G/grkGzi038CYPCBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92b80a0d3e6f6e6acac88adebf5e978554f7f08a66bc2f7b5dca95f0b8654660","last_reissued_at":"2026-07-05T05:04:26.479912Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:04:26.479912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.05937","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":"2026-07-05T05:04:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nr5HAbU+sa2NuDHmZ+2Y4du9nUieh5Px3DohGaxDhVC+LTo6NbBjgg3qLaxi5wjqp8NCSl76onT4e/WDr5lzBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T09:12:45.893472Z"},"content_sha256":"07b7e4b791b942ebba1847ea8beea0ebf9caee0174e3a7734ea97ae27b1c2e79","schema_version":"1.0","event_id":"sha256:07b7e4b791b942ebba1847ea8beea0ebf9caee0174e3a7734ea97ae27b1c2e79"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:SK4AUDJ6N5XGVSWIRLPL6XUXQV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black-Box Quantum State Preparation with Inverse Coefficients","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Guolong Cui, Jiayun Li, Ruimin Shang, Runhong He, Shangshang Shi, Shengbin Wang, Wendong Li, Yanan Li, YongJian Gu, Zhimin Wang, Zhiqiang Wei","submitted_at":"2021-12-11T09:22:25Z","abstract_excerpt":"Black-box quantum state preparation is a fundamental building block for many higher-level quantum algorithms, which is applied to transduce the data from computational basis into amplitude. Here we present a new algorithm for performing black-box state preparation with inverse coefficients based on the technique of inequality test. This algorithm can be used as a subroutine to perform the controlled rotation stage of the Harrow-Hassidim-Lloyd (HHL) algorithm and the associated matrix inversion algorithms with exceedingly low cost. Furthermore, we extend this approach to address the general bla"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05937","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/2112.05937/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":"2026-07-05T05:04:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ohaCCZdoM4CHFl7zReTyGdYXovL7rUOhuu5IM/a/3rk5ykvyzgPDDgB/pv/q8YiayFm9HYSlerZ1fSvbRRInBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T09:12:45.893834Z"},"content_sha256":"3f1a55e60e756a8839148895b1bfce6994cd86e7dd9368ccbd02dc98c337f448","schema_version":"1.0","event_id":"sha256:3f1a55e60e756a8839148895b1bfce6994cd86e7dd9368ccbd02dc98c337f448"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/bundle.json","state_url":"https://pith.science/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/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":"2026-07-17T09:12:45Z","links":{"resolver":"https://pith.science/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV","bundle":"https://pith.science/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/bundle.json","state":"https://pith.science/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SK4AUDJ6N5XGVSWIRLPL6XUXQV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SK4AUDJ6N5XGVSWIRLPL6XUXQV","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":"38acd2f4039009a06feabf2e2908ebe5b117a1cd880106c5489300a3eadf6d2d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-11T09:22:25Z","title_canon_sha256":"52f8346ff2f501e988f5dab9dbffa0c90da09a8dced2b484ed9618901a20bccf"},"schema_version":"1.0","source":{"id":"2112.05937","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05937","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05937v1","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05937","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_12","alias_value":"SK4AUDJ6N5XG","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_16","alias_value":"SK4AUDJ6N5XGVSWI","created_at":"2026-07-05T05:04:26Z"},{"alias_kind":"pith_short_8","alias_value":"SK4AUDJ6","created_at":"2026-07-05T05:04:26Z"}],"graph_snapshots":[{"event_id":"sha256:3f1a55e60e756a8839148895b1bfce6994cd86e7dd9368ccbd02dc98c337f448","target":"graph","created_at":"2026-07-05T05:04:26Z","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/2112.05937/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Black-box quantum state preparation is a fundamental building block for many higher-level quantum algorithms, which is applied to transduce the data from computational basis into amplitude. Here we present a new algorithm for performing black-box state preparation with inverse coefficients based on the technique of inequality test. This algorithm can be used as a subroutine to perform the controlled rotation stage of the Harrow-Hassidim-Lloyd (HHL) algorithm and the associated matrix inversion algorithms with exceedingly low cost. Furthermore, we extend this approach to address the general bla","authors_text":"Guolong Cui, Jiayun Li, Ruimin Shang, Runhong He, Shangshang Shi, Shengbin Wang, Wendong Li, Yanan Li, YongJian Gu, Zhimin Wang, Zhiqiang Wei","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-11T09:22:25Z","title":"Black-Box Quantum State Preparation with Inverse Coefficients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05937","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":"sha256:07b7e4b791b942ebba1847ea8beea0ebf9caee0174e3a7734ea97ae27b1c2e79","target":"record","created_at":"2026-07-05T05:04:26Z","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":"38acd2f4039009a06feabf2e2908ebe5b117a1cd880106c5489300a3eadf6d2d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-11T09:22:25Z","title_canon_sha256":"52f8346ff2f501e988f5dab9dbffa0c90da09a8dced2b484ed9618901a20bccf"},"schema_version":"1.0","source":{"id":"2112.05937","kind":"arxiv","version":1}},"canonical_sha256":"92b80a0d3e6f6e6acac88adebf5e978554f7f08a66bc2f7b5dca95f0b8654660","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92b80a0d3e6f6e6acac88adebf5e978554f7f08a66bc2f7b5dca95f0b8654660","first_computed_at":"2026-07-05T05:04:26.479912Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:04:26.479912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3q/jcYZ1FtkrjS0y04AU4djijnNuzsXZXL7mlAgAeLCJc/JYKTTs00Pj0jObd/5B/3j95G/grkGzi038CYPCBA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:04:26.480402Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.05937","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07b7e4b791b942ebba1847ea8beea0ebf9caee0174e3a7734ea97ae27b1c2e79","sha256:3f1a55e60e756a8839148895b1bfce6994cd86e7dd9368ccbd02dc98c337f448"],"state_sha256":"2f93cfe7327b9dcd57afc1ac6b36b08646448c1b959871a9f6dfcc46544972ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zwJJlZTUxSOe95nRP7O6aDgaRm0z5QG8B8/ELqfLf81381zm9J6wTQi7mIhfg2s1PxjDSyQG46fVqnf/64l/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T09:12:45.897010Z","bundle_sha256":"46e95801d577711973dad458df870626bfe44615c26f4ae33e1ed2184b762a6e"}}