> On 5 Oct 2020, at 21:13, Philip Thrift <[email protected]> wrote: > > > > On Monday, October 5, 2020 at 1:55:20 PM UTC-5 [email protected] wrote: > > I think the killer application for a quantum computer will be simulating > quantum systems. > > John K Clark > > > Why shouldn't simulations of quantum systems on (massive CPU/GPU parallel) > computers be just as good?
It is good enough! …in theory. You can simulate a quantum computer classically, but to factorise a number with more than one or two hundreds of digits, the observable universe is not big enough to contain the massive parallel classical computers. This means that even the quasi-exact simulation of a proton requires something bigger than a (single) physical universe (if that notion could make sense). Now, as Deutsch has shown, any quantum system can be emulated by a quantum computer in polynomial time. Bruno > > @philipthrift > > -- > 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 [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/d737022e-8535-4d75-afca-86466aeb1fd6n%40googlegroups.com > > <https://groups.google.com/d/msgid/everything-list/d737022e-8535-4d75-afca-86466aeb1fd6n%40googlegroups.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/B76E5052-3F7E-4EB3-B96A-9D514D90C9DB%40ulb.ac.be.
