> On 20 Apr 2020, at 03:09, spudboy100 via Everything List > <everything-list@googlegroups.com> wrote: > > Now all is has to do is work far better than digital computing.
Quantum computing is still digital computing. A Quantum Computer does not violate the Church-Turing thesis, and it obeys to whatever we can prove (a lot) about limitations and possibilities of digital machines. What a QC can do, and no Classical machine seem able to do, is to simulate in polynomial time any natural process, not even the quantum vacuum, but this is what classical computation theory predicts, when we assume mechanism in cognitive science, as any piece of matter is “made of” (“emerges on”) infinitely many computations. In my opinion, quantum computers will exist, but that might take a long time. I agree with Clark that eventually that will be a machine using quantum topological qubits, and the first one will be a gigantic machine, then they will get smaller and smaller, but that too will take sometime. What will happen sooner will be some classical computer having some quantum gates, for some particular task. Nearby (from my office) a team works hard to just make a “true” quantum random generator, but that is already an immensely complex endeavour. Of course, the actual miniaturisation of the classical computer is already a prowess of quantum mechanics. Even the transistor would not have been possible without quantum mechanics. Bruno > > > -----Original Message----- > From: John Clark <johnkcl...@gmail.com> > To: everything-list@googlegroups.com > Sent: Thu, Apr 16, 2020 4:59 pm > Subject: Quantum Computers > > In today's issue of the journal Nature there is a article about a Silicon > based Quantum Computer that operates at temperatures as high as 1.25 degrees > Kelvin with an error rate of only 0.7%. That may seem pretty cold but > previous Silicon based Quantum Computers, the type corporate investors like > best, needed 0.01 degrees Kelvin. Compared with that 1.25 is blistering hot. > > Universal quantum logic in hot silicon qubits > <https://www.nature.com/articles/s41586-020-2170-7.epdf?referrer_access_token=XsHdAm9MshAU5-lXuKjHvtRgN0jAjWel9jnR3ZoTv0Mq2y-NgrvDAmaQByJJUjWh0wWMRtvMvesXUkt7Je7E0p153O2QHZlcPk1NQTS0iitw1eOlvcrRnWWLbdRvuKu7Yf-pnUHuLbJiI5MXcKpB-wK9Avrjl6UoIPCSea5LS_ztPSvH62r4BaUh5SDt4IATPX7lb5xsmG73nwD37zFPndXKV6ryW352BW8wlDISsgzVA2kpbkXYbUnEl3L9heDVuWdKULsWTi4kH_xCfSrS7iTC2DlG5TmYwJovdCI6qqhhFE2AVTMXHmVJUiyWw3_gPXq37sYOPKjhWHxIEs8PNBFgA94REcn4eiQzUHmdvcDDrFTTFOnA9uU9KePFJpdOzxU7XzFhWuVcX_pu1unQC1h6wjBe5a3KECp_tHkRwWGlpC667InJhZCA-oGbSF0-gDsU3A2nAmhzggFkbJBwmMfL1y7TiV9mQWsdxjpb5lmjHGiphKS-l_Crhsg25c91&tracking_referrer=www.sciencenews.org> > > John K Clark > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to everything-list+unsubscr...@googlegroups.com > <mailto:everything-list+unsubscr...@googlegroups.com>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/CAJPayv3%2B3by42NefBO7ROEWtn8NELk5c57B5cK%3Dc9gypJU%3Dw0g%40mail.gmail.com > > <https://groups.google.com/d/msgid/everything-list/CAJPayv3%2B3by42NefBO7ROEWtn8NELk5c57B5cK%3Dc9gypJU%3Dw0g%40mail.gmail.com?utm_medium=email&utm_source=footer>. > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to everything-list+unsubscr...@googlegroups.com > <mailto:everything-list+unsubscr...@googlegroups.com>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/1437118162.3221131.1587344960769%40mail.yahoo.com > > <https://groups.google.com/d/msgid/everything-list/1437118162.3221131.1587344960769%40mail.yahoo.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/43F6B85E-9B8E-4DDF-AAB1-5AF810B2E5C5%40ulb.ac.be.
