Certain computer scientists have already scoffed at this development as not 
being accurate. I hope it is accurate, because the species needs all the help 
it can get to survive. At best it is a hybrid, quantum-conventional computer. 
The road to any kind of good singularity seems to be very long, and I ponder if 
there is some unappreciated development in computer engineering and materials 
science that could catapult us where we need to go, instead of the quantum?



-----Original Message-----
From: John Clark <[email protected]>
To: everything-list <[email protected]>
Sent: Wed, Dec 9, 2015 12:41 pm
Subject: Google's Quantum Computer




Google's D-wave machine is not a general purpose Quantum Computer that can work 
on any sort of problem, those are more difficult to build, but now it looks 
like D-Wave's claim that it can solve "QUBO class problems" dramatically faster 
than conventional computers may have some truth to it. Interestingly protein 
folding is a QUBO problem and solving that would revolutionize medicine and be 
a big stepping stone toward full scale Drexler style Nanotechnology. Google 
just published a paper saying their D-Wave can solve those type of problems 100 
million times faster than the regular computer:



​"​
We found that for problem instances involving nearly 1000 binary variables, 
quantum annealing significantly outperforms its classical counterpart, 
simulated annealing. It is more than 10^8 times faster than simulated annealing 
running on a single core. We also compared the quantum hardware to another 
algorithm called Quantum Monte Carlo. This is a method designed to emulate the 
behavior of quantum systems, but it runs on conventional processors. While the 
scaling with size between these two methods is comparable, they are again 
separated by a large factor sometimes as high as 10^8.
​"




On the other hand Google's paper has not been peer reviewed yet, on the third 
hand the regular computer was not using the most efficient algorithm available, 
on the fourth  hand it does prove that the D-wave really is using Quantum logic 
in its internal computations not regular logic, on the fifth hand as the 
problem gets larger the advantage the D-Wave would have over the regular 
computer would increase.




You can see the paper at:   ​


http://arxiv.org/pdf/1512.02206v1.pdf





​  John K Clark​




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