{"id":153223,"date":"2022-12-19T19:25:12","date_gmt":"2022-12-20T01:25:12","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2022\/12\/autonomous-estimation-of-high-dimensional-coulomb-diamonds-from-sparse-measurements"},"modified":"2022-12-19T19:25:12","modified_gmt":"2022-12-20T01:25:12","slug":"autonomous-estimation-of-high-dimensional-coulomb-diamonds-from-sparse-measurements","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2022\/12\/autonomous-estimation-of-high-dimensional-coulomb-diamonds-from-sparse-measurements","title":{"rendered":"Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements"},"content":{"rendered":"<p><a class=\"blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/autonomous-estimation-of-high-dimensional-coulomb-diamonds-from-sparse-measurements2.jpg\"><\/a><\/p>\n<p>In spin-based quantum processors, each quantum dot of a qubit is populated by exactly one electron, which requires careful tuning of each gate voltage such that it lies inside the charge-stability region (the \u201cCoulomb diamond\u2019\u2018) associated with the dot array. However, mapping the boundary of a multidimensional Coulomb diamond by traditional dense raster scanning would take years, so the authors develop a sparse acquisition technique that autonomously learns Coulomb-diamond boundaries from a small number of measurements. Here we have hardware-triggered line searches in the gate-voltage space of a silicon quadruple dot, with smart search directions proposed by an active-learning algorithm.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In spin-based quantum processors, each quantum dot of a qubit is populated by exactly one electron, which requires careful tuning of each gate voltage such that it lies inside the charge-stability region (the \u201cCoulomb diamond\u2019\u2018) associated with the dot array. However, mapping the boundary of a multidimensional Coulomb diamond by traditional dense raster scanning would [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,1965,1617,6],"tags":[],"class_list":["post-153223","post","type-post","status-publish","format-standard","hentry","category-information-science","category-mapping","category-quantum-physics","category-robotics-ai"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/153223","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=153223"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/153223\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=153223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=153223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=153223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}