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(MIT Technology Review)   Amazon and the CIA may or may not have invested in quantum computing   (technologyreview.com) divider line 15
    More: Interesting, Jeff Bezos, Amazon, CIA, quantum, D-Wave Systems, quantum computer, companies of Canada, machine learning  
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1688 clicks; posted to Geek » on 05 Oct 2012 at 8:55 AM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2012-10-05 09:05:38 AM  
I see what u did or did not do there or here.
 
2012-10-05 09:09:52 AM  
Anybody watch (or not watch) Person of Interest on CBS where Fred last night solve The Oregon Trail in about eight seconds when she was 12?
 
2012-10-05 09:13:50 AM  
I checked, and it turns out that they have. But since I checked, now it's just regular old computing. Sorry guys!
 
2012-10-05 09:14:50 AM  
Oh joy. Can we please cut the parts of the budget for various directors to use turf wars as proxies for their dick size? Encryption is the NSA's bailiwick.
 
2012-10-05 09:22:30 AM  
Amazon and the CIA may or and may not have invested in quantum computing

Until we know it is both
 
2012-10-05 09:37:26 AM  
Having read TFA, the headline is uncomfortably accurate. This thing may have qubits, but there's no evidence of entanglement (which is kind of the whole point performance-wise). So it may or may not be a quantum computer as we think of it.
 
2012-10-05 10:46:36 AM  
We won't know until we look at the cat.
 
2012-10-05 11:42:52 AM  
can someome explain it to me like i am 7 how quantum computers are so more awesome? I get bits and peices of the idea but for some reason i reach a mental block how exactly everything falls into place and is usable.
 
2012-10-05 12:39:12 PM  

Loki009: can someome explain it to me like i am 7 how quantum computers are so more awesome? I get bits and peices of the idea but for some reason i reach a mental block how exactly everything falls into place and is usable.


http://simple.wikipedia.org/wiki/Quantum_computer
 
2012-10-05 12:48:21 PM  

grinding_journalist: http://simple.wikipedia.org/wiki/Quantum_computer


Thanks, I think the issue i am getting hung up on is how entanglement would be leveraged in computing system. Dont know if simple.wikipedia will help me there.
 
2012-10-05 03:48:46 PM  
The CIA can neither confirm or deny that Amazon invested in quantum computing?
 
2012-10-05 05:08:33 PM  

Loki009: can someome explain it to me like i am 7 how quantum computers are so more awesome? I get bits and peices of the idea but for some reason i reach a mental block how exactly everything falls into place and is usable.


Let's say you're doing a brute force search for a number that has some property, because you don't have any better way to find it. You just test 0, 1, 2, 3, 4, 5, and so on until you find the one you want. What quantum computing lets you do is test multiple numbers at the same time, because science. The reason entanglement is so important is because it determines how many numbers you can run at once. For each additional "qubit" you entangle, you double the amount of numbers that can be tested at a time. 1 qubit can do 2 numbers at once, 2 qubits can do 4, 3 can do 8, and so on. Hopefully you don't need the for-dummies version of the exponential function to see why that's so awesome.

The only problem is that entangled states are ridiculously fragile, so the exponential performance boost is offset by an exponential difficulty curve in getting the qubits to cooperate. The current record according to the Googles is 14 qubits (16k numbers at once), which is impressive but not nearly enough to do all the fancy crap quantum computing is often advertised as being able to do.
 
2012-10-05 05:30:07 PM  

pueblonative: I see what u did or did not do there or here.


If you saw it, then you measured it, and the outcome was determined. (unless you are like the article, and just looked at it a little.)
 
2012-10-05 11:55:59 PM  

Olympic Trolling Judge: Loki009: can someome explain it to me like i am 7 how quantum computers are so more awesome? I get bits and peices of the idea but for some reason i reach a mental block how exactly everything falls into place and is usable.

Let's say you're doing a brute force search for a number that has some property, because you don't have any better way to find it. You just test 0, 1, 2, 3, 4, 5, and so on until you find the one you want. What quantum computing lets you do is test multiple numbers at the same time, because science. The reason entanglement is so important is because it determines how many numbers you can run at once. For each additional "qubit" you entangle, you double the amount of numbers that can be tested at a time. 1 qubit can do 2 numbers at once, 2 qubits can do 4, 3 can do 8, and so on. Hopefully you don't need the for-dummies version of the exponential function to see why that's so awesome.

The only problem is that entangled states are ridiculously fragile, so the exponential performance boost is offset by an exponential difficulty curve in getting the qubits to cooperate. The current record according to the Googles is 14 qubits (16k numbers at once), which is impressive but not nearly enough to do all the fancy crap quantum computing is often advertised as being able to do.


That helps quite a bit. Thanks. It also confirms that the entanglement part blows a fuse in my brain. I just have a hard time with the idea of entanglement. Not sure why but just doesn't seem like it should work that way to me
 
2012-10-07 11:21:36 PM  
Here's how I see it... (I could be wrong)
If it can work, it must work. If it can fail, it must fail.

And D-Wave is good at getting people to pay them to try and identify and filter out the failures.
 
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