{"id":905,"date":"2011-03-03T11:02:58","date_gmt":"2011-03-03T09:02:58","guid":{"rendered":"https:\/\/webs.uab.cat\/giq\/seminar\/multi-copy-programmable-discrimination-general-qubits\/"},"modified":"2011-03-03T11:02:58","modified_gmt":"2011-03-03T09:02:58","slug":"multi-copy-programmable-discrimination-general-qubits","status":"publish","type":"seminar","link":"https:\/\/webs.uab.cat\/giq\/seminar\/multi-copy-programmable-discrimination-general-qubits\/","title":{"rendered":"Multi-copy programmable discrimination of general qubits"},"content":{"rendered":"<p>Quantum state discrimination is a fundamental primitive in quantum     statistics where one has to correctly identify the state of a system     that is in one of two possible known states. A programmable     discrimination machine performs this task when the pair of possible     states is not a priori known but instead the two possible states are     provided through two respective program ports. We study optimal     programmable discrimination machines for general qubit states when     several copies of states are available in the data or program ports.     Two scenarios are considered: One in which the purity of the     possible states is a priori known, and the fully universal one where     the machine operates over generic mixed states of unknown purity.     Also, the local implementation of a programmable machine is studied     as a two-step <em>measure and discriminate<\/em> procedure. We find     that optimal unrestricted programmable machines do not require     quantum memory in some special cases.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quantum state discrimination is a fundamental primitive in quantum statistics where one has to correctly identify the state of a system that is in one of two possible known states. A programmable discrimination machine performs this task when the pair of possible states is not a priori known but instead the two possible states are [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-905","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/types\/seminar"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/users\/20"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/media?parent=905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}