{"id":151500,"date":"2022-11-30T09:22:58","date_gmt":"2022-11-30T15:22:58","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2022\/11\/new-quantum-computing-feat-is-a-modern-twist-on-a-150-year-old-thought-experiment"},"modified":"2022-11-30T09:22:58","modified_gmt":"2022-11-30T15:22:58","slug":"new-quantum-computing-feat-is-a-modern-twist-on-a-150-year-old-thought-experiment","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2022\/11\/new-quantum-computing-feat-is-a-modern-twist-on-a-150-year-old-thought-experiment","title":{"rendered":"New quantum computing feat is a modern twist on a 150-year-old thought experiment"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/Ynrw61RXAlM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>A team of quantum engineers at UNSW Sydney has developed a method to reset a quantum computer\u2014that is, to prepare a quantum bit in the \u20180\u2019 state\u2014with very high confidence, as needed for reliable quantum computations. The method is surprisingly simple: it is related to the old concept of \u2018Maxwell\u2019s demon\u2019, an omniscient being that can separate a gas into hot and cold by watching the speed of the individual molecules.<\/p>\n<p>\u201cHere we used a much more modern \u2018demon\u2019\u2014a fast digital voltmeter\u2014to watch the temperature of an electron drawn at random from a warm pool of electrons. In doing so, we made it much colder than the pool it came from, and this corresponds to a high certainty of it being in the \u20180\u2019 computational state,\u201d says Professor Andrea Morello of UNSW, who led the team.<\/p>\n<p>\u201cQuantum computers are only useful if they can reach the final result with very low probability of errors. And one can have near-perfect quantum operations, but if the calculation started from the wrong code, the final result will be wrong too. Our digital \u2018Maxwell\u2019s demon\u2019 gives us a 20x improvement in how accurately we can set the start of the computation.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A team of quantum engineers at UNSW Sydney has developed a method to reset a quantum computer\u2014that is, to prepare a quantum bit in the \u20180\u2019 state\u2014with very high confidence, as needed for reliable quantum computations. The method is surprisingly simple: it is related to the old concept of \u2018Maxwell\u2019s demon\u2019, an omniscient being that [\u2026]<\/p>\n","protected":false},"author":556,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,1617],"tags":[],"class_list":["post-151500","post","type-post","status-publish","format-standard","hentry","category-computing","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/151500","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\/556"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=151500"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/151500\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=151500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=151500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=151500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}