{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:LOXPKAZDQD7X57ASPHXHGEGLIQ","short_pith_number":"pith:LOXPKAZD","canonical_record":{"source":{"id":"2109.04482","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-09T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"e2d1a34e0317f71044184448e205c3965c0ba94d59c38bf54f6b598b713d120f","abstract_canon_sha256":"103ef43781ff8035d8e8c0375d888c1bbd6d06a127cc7656c2bfbbfe1a581994"},"schema_version":"1.0"},"canonical_sha256":"5baef5032380ff7efc1279ee7310cb4438991d4e65e45bd7b52875e03870e23e","source":{"kind":"arxiv","id":"2109.04482","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.04482","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"arxiv_version","alias_value":"2109.04482v2","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.04482","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_12","alias_value":"LOXPKAZDQD7X","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"LOXPKAZDQD7X57AS","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"LOXPKAZD","created_at":"2026-07-05T03:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:LOXPKAZDQD7X57ASPHXHGEGLIQ","target":"record","payload":{"canonical_record":{"source":{"id":"2109.04482","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-09T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"e2d1a34e0317f71044184448e205c3965c0ba94d59c38bf54f6b598b713d120f","abstract_canon_sha256":"103ef43781ff8035d8e8c0375d888c1bbd6d06a127cc7656c2bfbbfe1a581994"},"schema_version":"1.0"},"canonical_sha256":"5baef5032380ff7efc1279ee7310cb4438991d4e65e45bd7b52875e03870e23e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:30:41.463501Z","signature_b64":"gdjqpRr+9JRw+i7TxrRVOpJrBuYR2ydEw+ZFQa39hQvykXcOghhw6k4gewd/X1cuKKshvyo7cbXHoagsR6jDDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5baef5032380ff7efc1279ee7310cb4438991d4e65e45bd7b52875e03870e23e","last_reissued_at":"2026-07-05T03:30:41.462991Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:30:41.462991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.04482","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":"2026-07-05T03:30:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k4qpXbU/UjtiixQaT+U162qIaF2t0SNwubTHRwUpkFmpZ+18rJi/Si3Yc6kwRSr97gX/wKgzr0ocp2SGoH4iAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T05:59:47.291510Z"},"content_sha256":"9da82b7704f5dca51f34e241d086836ac2fcec4003864cd544714904de328cd3","schema_version":"1.0","event_id":"sha256:9da82b7704f5dca51f34e241d086836ac2fcec4003864cd544714904de328cd3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:LOXPKAZDQD7X57ASPHXHGEGLIQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantifying the Impact of Precision Errors on Quantum Approximate Optimization Algorithms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Eugene Dumitrescu, Gregory Quiroz, Itay Hen, Kevin Schultz, Paraj Titum, Pavel Lougovski, Phillip Lotshaw","submitted_at":"2021-09-09T18:00:03Z","abstract_excerpt":"The quantum approximate optimization algorithm (QAOA) is a hybrid quantum-classical algorithm that seeks to achieve approximate solutions to optimization problems by iteratively alternating between intervals of controlled quantum evolution. Here, we examine the effect of analog precision errors on QAOA performance both from the perspective of algorithmic training and canonical state- and observable-dependent QAOA-relevant metrics. Leveraging cumulant expansions, we recast the faulty QAOA as a control problem in which precision errors are expressed as multiplicative control noise and derive bou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.04482","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/2109.04482/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":"2026-07-05T03:30:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lO0arDUKBH/3PQsuaUJgee6TliK9tNEWplHx6lgmZuW2bEZmLrsAAMHa1b6+BvMJ491ykQdzbFWeL8tG9l7/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T05:59:47.292121Z"},"content_sha256":"c1b703b574afebe260689f7f75cf6f0225b5b1d8b3805a5614e20997c7f854d7","schema_version":"1.0","event_id":"sha256:c1b703b574afebe260689f7f75cf6f0225b5b1d8b3805a5614e20997c7f854d7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/bundle.json","state_url":"https://pith.science/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/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":"2026-08-06T05:59:47Z","links":{"resolver":"https://pith.science/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ","bundle":"https://pith.science/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/bundle.json","state":"https://pith.science/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LOXPKAZDQD7X57ASPHXHGEGLIQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:LOXPKAZDQD7X57ASPHXHGEGLIQ","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":"103ef43781ff8035d8e8c0375d888c1bbd6d06a127cc7656c2bfbbfe1a581994","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-09T18:00:03Z","title_canon_sha256":"e2d1a34e0317f71044184448e205c3965c0ba94d59c38bf54f6b598b713d120f"},"schema_version":"1.0","source":{"id":"2109.04482","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.04482","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"arxiv_version","alias_value":"2109.04482v2","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.04482","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_12","alias_value":"LOXPKAZDQD7X","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"LOXPKAZDQD7X57AS","created_at":"2026-07-05T03:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"LOXPKAZD","created_at":"2026-07-05T03:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:c1b703b574afebe260689f7f75cf6f0225b5b1d8b3805a5614e20997c7f854d7","target":"graph","created_at":"2026-07-05T03:30:41Z","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/2109.04482/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The quantum approximate optimization algorithm (QAOA) is a hybrid quantum-classical algorithm that seeks to achieve approximate solutions to optimization problems by iteratively alternating between intervals of controlled quantum evolution. Here, we examine the effect of analog precision errors on QAOA performance both from the perspective of algorithmic training and canonical state- and observable-dependent QAOA-relevant metrics. Leveraging cumulant expansions, we recast the faulty QAOA as a control problem in which precision errors are expressed as multiplicative control noise and derive bou","authors_text":"Eugene Dumitrescu, Gregory Quiroz, Itay Hen, Kevin Schultz, Paraj Titum, Pavel Lougovski, Phillip Lotshaw","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-09T18:00:03Z","title":"Quantifying the Impact of Precision Errors on Quantum Approximate Optimization Algorithms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.04482","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":"sha256:9da82b7704f5dca51f34e241d086836ac2fcec4003864cd544714904de328cd3","target":"record","created_at":"2026-07-05T03:30:41Z","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":"103ef43781ff8035d8e8c0375d888c1bbd6d06a127cc7656c2bfbbfe1a581994","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-09-09T18:00:03Z","title_canon_sha256":"e2d1a34e0317f71044184448e205c3965c0ba94d59c38bf54f6b598b713d120f"},"schema_version":"1.0","source":{"id":"2109.04482","kind":"arxiv","version":2}},"canonical_sha256":"5baef5032380ff7efc1279ee7310cb4438991d4e65e45bd7b52875e03870e23e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5baef5032380ff7efc1279ee7310cb4438991d4e65e45bd7b52875e03870e23e","first_computed_at":"2026-07-05T03:30:41.462991Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:30:41.462991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gdjqpRr+9JRw+i7TxrRVOpJrBuYR2ydEw+ZFQa39hQvykXcOghhw6k4gewd/X1cuKKshvyo7cbXHoagsR6jDDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:30:41.463501Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.04482","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9da82b7704f5dca51f34e241d086836ac2fcec4003864cd544714904de328cd3","sha256:c1b703b574afebe260689f7f75cf6f0225b5b1d8b3805a5614e20997c7f854d7"],"state_sha256":"e0d40a7e449c9d44051160050c198724b1bd87b8e6f7d6bbe152ea596af999ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KlEMwYGLchs06w9UBqsDFnToyPBIAH8VmT5ATSizB0GElGDjz1Pq6P7sEYM6Q2ZTxLPJsNdaZ0+slCJ6S+n7Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T05:59:47.297381Z","bundle_sha256":"b9b293e867ebea6acbc2f20d19853cc4d668bdefeb83cbf247dba69b3667f4b3"}}