
Yay for Quantum Computing!
Raymond Johnson

13 times it succeeded out of 10,000 tries? Hmm, makes Microsoft's
windows look promising.
I'll be impressed when it solves problems 9,999 times out of 10,000.
i can live with a little tiny error.
notarichman

Hate to be a downer, but this doesn't seem to be any improvement to current computing. And the thought that all that has to be done is increase it's computing power doesn't seem to be any different than adding power to current computing....so where will this take us in the end?
Jess Atwell

Maybe these new quantum computers will figure out a way to fold space. Then we can get on with the business of interstellar colonization.
Chuck Anziulewicz

I wonder how many times out of 10,000 tries a monkey would get it right? Just wondering if it statistically significant.
Brew

Looking forward to the DBox gaming system!
Paul Smith

Yes Bew, what exactly is the success rate of a monkey solving sixaminoacid folding sequences under the MiyazawaJernigan latticemodel?
A working, commercially available quantum computer is a big deal. It is long way away from mass market but this is still a significant benchmark.
In normal computing there are two states, 0 or 1. In quantum computing there are multiple possible states or quantum bits (qbits) so it has the potential to scale exponentially.
Daishi

It would have been helpful if the author had posted what a purely random approach would have yielded so we can gauge what the significance of 13/10000 is, since otherwise it looks lousy.
Adrien

@Adrien the short answer is 0/10,000 but check out folding@home (http://folding.stanford.edu/English/Science), it is a distributed computing platform that uses mostly donated CPU cycles to complete protein folding.
Here is a quote from the page:
"It's amazing that not only do proteins selfassemble  fold  but they do so amazingly quickly: some as fast as a millionth of a second. While this time is very fast on a person's timescale, it's remarkably long for computers to simulate. In fact, it can take about a day to simulate about a hundred nanoseconds (1/1,000,000,000 of a second). Unfortunately, many proteins fold on the millisecond timescale (1,000,000 nanoseconds). Thus, it would take 10,000 CPU days to simulate folding  i.e. it would take 30 CPU years! That's a long time to wait for one result"
If you are just adding a couple numbers in a single computation it is possible for a random result to occasionally equal the correct result but for something as incredibly complex with as many calculations required to complete a protein folding sequence the odds of a random result being correct are abysmal.
Daishi

In other news: "What?!! Quantum computers are real!?!"
Ken Dawson

I think 13 out of 10,000 means the 13 correct minimum configurations out of 10,000 possible non minimum configurations. It doesn't mean 13 correct out of 10,000 correct.
Ulf Lindroth

Not all quantum computers are created equal. DWave's machine is a special purpose device (albeit still quite versatile) but not what is referred to as a universal gate based Quantum Computer.
I recently tried to sort this out in this blog post.
quax

From the Nature Article :
"Even though the quantum device follows a quantum annealing protocol, the odds of measuring the ground state are not necessarily high. For example, in the 81 qubit experiment, only 13 out of 10,000 measurements yielded the desired solution. We attribute these lowpercentages to the analog nature of the device and to precision limitations in the real values of the local fields and couplings among the qubits in the experimental setup. "
I think what you have to remember is that quantum computing is completely different than regular computing. From what I recall (I don't have time to comprehend the article, its very advanced) You feed in the question, and the answer is given right more times than not... You collect all the answers of multiple runs and they give you something like a bell shaped curve pointing at the correct answer. Feel free to correct me on that. I'm pretty sure its not as cut and dry as "1+1 = 2" but more like 1+1 = median(1,2,2,3,2,4,2,2,1,2,2,4,4,2,1,5,2,0,2,2,2), with the more calculations performed, the higher acuracy result.
I think a better question might be how many of the 10'000 indicated a unique noncorrect solution. If it was more than 13, then theres something wrong with the computer, or just a statistical fluctuation. Don't you just love quantum mechanics?
Tony Smale

I really find this hard to believe. Has anyone taken the "Quantum computer" apart to see how it actually works? I think in a number of months, we will find out that this is a hoax or complete fraud, similar to all the "Perpetual motion" machines or "Cold fusion" devices out there.
Satviewer2000

@Satviewer2000
If you would like to go ahead and rip open the DWave Computer to show the world that it's merely a fraud, be my guest, but remember that Quantum Computing isn't something as blackandwhite as Cold Fusion or Perpetual Motion, and also remember that if you do look at the inside of this DWave computer, you are likely to render it useless as all the qubit particles decouple from having been observed.
Kayvon Manian

Quantum mechanics: The Science of how the Universe works, from beginning to end! Has had a 'rough''line''wave' ride into hard science; These past few years, man's timeline, its finally arrived; Hard Core Scientist have embraced Quantum! In doing so, many nonbelievers, are now believers of Quantum Theory! I teach Quantum Theory of Everything! A Quantum Computer, and and will prove to be very valuable in Quantum Time Line!
Don't believe me study the Science of Quantum and believe!! Or come into my QuantumCafe'Coos, on Facebook!
Dr Gene Landrum, PhD in Quantum!!
QuantumTheoryIntheformofman

My embedded link was dropped. Anyhow, google "Quantum Computing Taxonomy" if you want to learn more about the significant differences in Quantum Computing designs.
quax

So now they have the 1000 times more powerful 512 bit processor  equivalent to 5 petaflops, or the 10th most powerful supercomputer. at least for the specialized problems. If they are able to keep progressing as they promise they can the 2048 bit processor will be 5000 petaflops equivalent,.... or faster the the faster supercomputer in China right now of 35 petaflops.
Nicholas Mathews Hoover