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[BBC] Nasa buys into 'quantum' computer

post #1 of 15
Thread Starter 
wow all those folding points I'm curious about Quantum GPUs
Quote:
In one case it took less than half a second to do something that took conventional software 30 minutes.

source
 
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post #2 of 15
I can't wait for a picture of the new computer working in a room next to a bunch of 1970's computers that were never replaced because of how much QA is required for new hardware (so another Apollo 13 or Challenger doesn't occur).
post #3 of 15
Still isn't what would be called "true" quantum computing however, and that should leave you thinking... If it is this fast now...
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post #4 of 15
Quantum computers are a bit scary. They are able to decrease the complexity of most problems by a factor of n I think (so an O(n^2) problem becomes linear time). It totally borks RSA and other complexity-based encryption algorithms, and while quantum secure algorithms exist, they haven't been very rigorously tested. Basically, I suspect computer security will be non-existant when QC goes mainstream.
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post #5 of 15
Then we'll use quantum computers to do the encryption.

Though standard computers would be completely boned, as quantum-based encryption would take WAY too long, and standard encryption would fail very quickly from a quantum attack.


Management: "What do you mean Windows XP and WEP isn't good enough for us?! BS!"
post #6 of 15
Quote:
Originally Posted by alcal View Post

Quantum computers are a bit scary. They are able to decrease the complexity of most problems by a factor of n I think (so an O(n^2) problem becomes linear time). It totally borks RSA and other complexity-based encryption algorithms, and while quantum secure algorithms exist, they haven't been very rigorously tested. Basically, I suspect computer security will be non-existant when QC goes mainstream.
Quantum security has not only been tested, but has been in place for over 2 years at Los Alamos, and is very limited.

They are using it on their local network, and it is currently completely impossible to compromise. But it uses specialized hardware.

And it is being used in other places as well:

http://www.businessweek.com/articles/2013-05-13/a-hack-proof-internet-exists-thanks-to-quantum-physics
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post #7 of 15
$15 million and a shed size case, just for one CPU, crazy
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by ZTR1760 View Post

$15 million and a shed size case, just for one CPU, crazy


not that expensive when you consider the proportionate spending for super computers that nasa has used in the past.
 
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post #9 of 15
Think of the PPD! It's insane to think what computers might be like in another 10 - 20 years.... Really exciting stuff!
post #10 of 15
but can it play crysis....



sorry, it had to be done
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