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Anior
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PostPosted: Fri Feb 24, 2006 11:48 am    Post subject: Gotta love quantum computers. Reply with quote

http://www.nature.com/news/2006/060220/full/060220-10.html
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jakamaka
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PostPosted: Fri Feb 24, 2006 12:14 pm    Post subject: Reply with quote

8O :!:
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mdeininger
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PostPosted: Fri Feb 24, 2006 12:29 pm    Post subject: Reply with quote

heh, yeah, that sounds a lot like back in grammar school. gotta love quantum physics! :D

*note to my teacher if you should ever read this: make sure you explain em-waves better next time! nobody in class got that, at all!*
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PostPosted: Fri Feb 24, 2006 1:40 pm    Post subject: Reply with quote

From what I read of the abstract it seems like marketing speak because the inherent nature of the computer is the fundamanetal properties oif quantum mechanics which unlike a current cannot be turned off. The trick however is that extracting the information from the qubit does require work so while the computer might be doing the calculation while it is off, it always has to be on to get it to tell you.

While I have a great deal of respect for the Kwiat group (He and Bouwmeester are easily tops in this field) the whole field is so overhyped and overmarketed that every little things gets hyped. This seems like a good paper but not IMHO Nature worthy as we're not going to see muich come of this in the next five years.
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blue.sca
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PostPosted: Fri Feb 24, 2006 2:19 pm    Post subject: Reply with quote

Tamsco wrote:
While I have a great deal of respect for the Kwiat group (He and Bouwmeester are easily tops in this field) the whole field is so overhyped and overmarketed that every little things gets hyped. This seems like a good paper but not IMHO Nature worthy as we're not going to see muich come of this in the next five years.


Same thoughts, but I think we have to wait for more than 20 years...
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Lepaca Kliffoth
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PostPosted: Fri Feb 24, 2006 6:38 pm    Post subject: Reply with quote

Wait... you mean the article is serious?? I thought it was a joke all along o_O I even laughed when it suggested not running the computation at all to make everything less error-prone...
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pitcrawler
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PostPosted: Fri Feb 24, 2006 6:51 pm    Post subject: Reply with quote

This means we can compile gentoo stuff in a "parallel universe" while we're doing other stuff in our own universe. :) (Read the article and you'll see that this is theoretically not impossible at some time in the future)
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madchaz
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PostPosted: Fri Feb 24, 2006 7:12 pm    Post subject: Reply with quote

Actualy, the article is more or less correct. The interpretation is just off a bit.

Quantum computers, by nature, work by not working. That's why they are so fast. The idea is that all the possibilities are always present, it's the act of taking a mesurement that "fixes" the awnser in time. The basic principle is that the actual calculation gets done in a different dimension, making the work appear instantanious (spelling?). Note that we're talking dimension in quantum physics, not sci-fi movie phisic. Basicaly, it's a different axis on the graph. You normaly have xyz for length, width and dept. This one takes place in something that would come after Z. (at least, that's my understanding of it)
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