{"id":168234,"date":"2023-07-24T14:24:36","date_gmt":"2023-07-24T19:24:36","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2023\/07\/researchers-observe-strongest-quantum-contextuality-in-single-system"},"modified":"2023-07-24T14:24:36","modified_gmt":"2023-07-24T19:24:36","slug":"researchers-observe-strongest-quantum-contextuality-in-single-system","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2023\/07\/researchers-observe-strongest-quantum-contextuality-in-single-system","title":{"rendered":"Researchers observe strongest quantum contextuality in single system"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/researchers-observe-strongest-quantum-contextuality-in-single-system.jpg\"><\/a><\/p>\n<p>A team led by Prof. Li Chuanfeng and Prof. Xu Jinshi from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with Prof. Chen Jingling from Nankai University and Prof. Ad\u00e1n Cabello from the University of Seville, studied the single-system version of multipartite Bell nonlocality, and observed the highest degree of quantum contextuality in single system. Their work was published in Physical Review Letters.<\/p>\n<p>Quantum contextuality refers to the phenomenon that the measurements of quantum observables cannot be simply considered as revealing preexisting properties. It is a distinctive feature in <a href=\"https:\/\/phys.org\/tags\/quantum+mechanics\/\" rel=\"tag\" class=\"\">quantum mechanics<\/a> and a crucial resource for quantum computation. Contextuality defies noncontextuality hidden-variable theories and is closely linked to <a href=\"https:\/\/phys.org\/tags\/quantum+nonlocality\/\" rel=\"tag\" class=\"\">quantum nonlocality<\/a>.<\/p>\n<p>In multipartite systems, quantum <a href=\"https:\/\/phys.org\/tags\/nonlocality\/\" rel=\"tag\" class=\"\">nonlocality<\/a> arises as the result of the contradiction between quantum contextuality and noncontextuality hidden-variable theories. The extent of nonlocality can be measured by the violation of Bell <a href=\"https:\/\/phys.org\/tags\/inequality\/\" rel=\"tag\" class=\"\">inequality<\/a> and previous researches showed that the violation increases exponentially with the number of quantum bits involved. However, while single-particle high-dimensional system offers more possibilities for measurements compared to multipartite systems, the quest to enhance contextual correlation\u2019s robustness remains an ongoing challenge.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A team led by Prof. Li Chuanfeng and Prof. Xu Jinshi from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with Prof. Chen Jingling from Nankai University and Prof. Ad\u00e1n Cabello from the University of Seville, studied the single-system version of multipartite Bell nonlocality, and observed [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,1617],"tags":[],"class_list":["post-168234","post","type-post","status-publish","format-standard","hentry","category-particle-physics","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/168234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=168234"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/168234\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=168234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=168234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=168234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}