{"id":"W2069262238","doi":"10.1103/physrevlett.105.130501","title":"Experimental Bound Entanglement in a Four-Photon State","year":2010,"lang":"en","type":"article","venue":"Physical Review Letters","topic":"Quantum Information and Cryptography","field":"Computer Science","cited_by":88,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo","funders":"","keywords":"Quantum entanglement; Physics; State (computer science); W state; Photon; Quantum mechanics; Photon entanglement; Bound state; Atomic physics; Quantum; Computer science","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":[0.0007604217,0.0002066458,0.0003328527,0.0004885244,0.0008806721,0.0007619133,0.0005478904,0.0006581892,0.002679785],"category_scores_gemma":[0.001909064,0.0002917053,0.0002146709,0.0004049348,0.001859253,0.00167743,0.001259031,0.0007245733,0.000142768],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000584437,"about_ca_system_score_gemma":0.0002459855,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0002210576,"about_ca_topic_score_gemma":0.0002359963,"domain_scores_codex":[0.9994733,0.0001779108,0.00002744721,0.00008986542,0.0001609482,0.00007063035],"domain_scores_gemma":[0.9986726,0.0008473638,0.0001474182,0.0002325968,0.00005415353,0.00004592011],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0007836329,0.0002970888,0.0071955,0.0001991696,0.00006274811,0.0005258163,0.0008352308,0.02471703,0.4056147,0.5474038,0.000580646,0.01178455],"study_design_scores_gemma":[0.0001731169,0.0006725284,0.006032384,0.00007226704,0.00005251461,0.0005667425,0.0003180256,0.1514838,0.6756232,0.1569022,0.007980702,0.0001225609],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9813313,0.00009553406,0.01148173,0.0001453221,0.00001523063,0.00001547882,0.00006514708,0.00004152559,0.006808733],"genre_scores_gemma":[0.9951267,0.00004484257,0.004122123,0.00001879359,0.000003879249,0.00002829157,0.00004842973,0.00001169864,0.0005951257],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002679785,"threshold_uncertainty_score":0.008964837,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01521028907837273,"score_gpt":0.2892384789673169,"score_spread":0.2740281898889441,"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."}}