{"id":"W4412524209","doi":"10.22331/q-2025-07-21-1800","title":"Averaging gate approximation error and performance of Unitary Coupled Cluster ansatz in Pre-FTQC Era","year":2025,"lang":"en","type":"article","venue":"Quantum","topic":"Quantum Computing Algorithms and Architecture","field":"Computer Science","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"Perimeter Institute; University of Waterloo","funders":"","keywords":"Ansatz; Unitary state; Cluster (spacecraft); Coupled cluster; Mathematics; Approximation error; Mathematical physics; Physics; Applied mathematics; Quantum mechanics; Computer science; Political science; Law; Computer network","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001985071,0.0005443152,0.001227838,0.0005331244,0.001237463,0.001069342,0.002067726,0.001385743,0.00350116],"category_scores_gemma":[0.005446849,0.0002431134,0.000479117,0.0007162399,0.001669164,0.002366115,0.001448113,0.001624482,0.0004284661],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001282982,"about_ca_system_score_gemma":0.00191916,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.007565238,"about_ca_topic_score_gemma":0.005668457,"domain_scores_codex":[0.999171,0.0003103659,0.00002766314,0.00009234494,0.0002232435,0.0001754757],"domain_scores_gemma":[0.9970264,0.001486919,0.0001826335,0.000457306,0.0005260778,0.0003206565],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.001458502,0.0002618637,0.004030896,0.0004858775,0.0001774335,0.0003734535,0.0003489395,0.6312432,0.008957997,0.3172071,0.01122537,0.02422934],"study_design_scores_gemma":[0.00001771712,0.00003718226,0.0002821065,0.0000162084,0.00001108317,0.00001407527,0.00002795831,0.9773761,0.001654596,0.02029964,0.0002447723,0.00001866374],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.772211,0.004061436,0.1760854,0.004108576,0.0007396145,0.00009270304,0.0007971412,0.002239921,0.03966416],"genre_scores_gemma":[0.9806616,0.0004093164,0.0161897,0.0001869806,0.00006901447,0.00004368999,0.0004258097,0.0001952925,0.001818513],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.007565238,"threshold_uncertainty_score":0.01504236,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007138213898733898,"score_gpt":0.2320573930421354,"score_spread":0.2249191791434015,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}