{"id":961,"date":"2013-08-09T18:38:05","date_gmt":"2013-08-09T16:38:05","guid":{"rendered":"https:\/\/webs.uab.cat\/giq\/seminar\/computational-and-cryptanalytic-consequences-time-travel\/"},"modified":"2013-08-09T18:38:05","modified_gmt":"2013-08-09T16:38:05","slug":"computational-and-cryptanalytic-consequences-time-travel","status":"publish","type":"seminar","link":"https:\/\/webs.uab.cat\/giq\/seminar\/computational-and-cryptanalytic-consequences-time-travel\/","title":{"rendered":"Computational and cryptanalytic consequences of time travel"},"content":{"rendered":"<p>We focus on two particular models of closed timelike curves.<\/p>\n<p> The first is Deutsch&#8217;s 1991 mixed-state-fixed-point model which abolishes the grandfather paradox. The second is due to Bennett and Schumacher, in which the grandfather paradox on certain initial states is exploited as a putative physical mechanism for post-selection.<\/p>\n<p> We discuss possible consequences of the existence of such closed timelike curves on quantum information processing.<\/p>\n<p> Joint work with Charles Bennett, Graeme Smith, and John Smolin from IBM TJ Watson Research Center<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We focus on two particular models of closed timelike curves. The first is Deutsch&#8217;s 1991 mixed-state-fixed-point model which abolishes the grandfather paradox. The second is due to Bennett and Schumacher, in which the grandfather paradox on certain initial states is exploited as a putative physical mechanism for post-selection. We discuss possible consequences of the existence [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-961","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/961","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=961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}