http://www.physorg.com/news11087.htmlBy combining quantum computation and quantum interrogation, scientists at the University of Illinois at Urbana-Champaign have found an exotic way of determining an answer to an algorithm – without ever running the algorithm."
Solve algorithms without running it., Quantum shenanigans
Solve algorithms without running it., Quantum shenanigans
First spotted on http://www.arrse.co.uk
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Grandpa Stu
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oh yeah
btw can you guys help me with that math problem?
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eepberries
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Re: oh yeah
fixed ...Kracus wrote:24Grandpa Stu wrote:btw can you guys help me with that math problem?
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[xeno]Julios
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Re: oh yeah
reverse thatKracus wrote:42Grandpa Stu wrote:btw can you guys help me with that math problem?
[url=http://profile.mygamercard.net/Emka+Jee][img]http://card.mygamercard.net/sig/Emka+Jee.jpg[/img][/url]
No it's not[xeno]Julios wrote:working link (other's down)
http://www.scienceagogo.com/news/200601 ... _sys.shtml
Are you at a school? You can just grab the original article from Nature if you're really interested.simply wrote:wow, that's very cool. I just wish they had gone into more depth. because I still don't understand how they're ariving at the resolts, before the action, just that it has to do with the 3 states of quantum spinning.
Here's a snippet from the Methods section (the whole paper doesn't format correctly with copy/paste):
From: Hosten et al. Nature 2006; 439, 949-952.CFC using the 'chained Zeno effect'
Using a polarizing BS and Pockels cells, a single photon is switched into cavity 'Off'' (Fig. 3a). By firing the Pockels cells at appropriate times, cavities 'Off'' and 'Off' are allowed a single coherent amplitude exchange via BS1, after which the cavities are isolated again. While the vast majority of the amplitude is cycling in cavity 'Off'', the small amount of amplitude that has been allowed to leak into cavity 'Off' performs the high-efficiency quantum Zeno cycles described in the text (N times between cavities 'Off' and 'On'). At each step, the amplitude exiting the algorithm is directed to an absorber (A2 or A3) if the ME is different from no. 1, effectively projecting the leaked amplitude into cavity 'Off', assuming N>>1. In contrast, if the ME is no. 1, at the end of N cycles all of the small amplitude component has coherently moved into cavity 'On'; when the Pockels cell in this cavity is fired to terminate the amplitude at A1, no amplitude is left in either cavity 'Off' or 'On'. In fact, this effectively projects the state into cavity 'Off'', assuming N'>>1.
Now we once again temporarily couple cavities 'Off'' and 'Off', and repeat the 'Off'–'On' (inner) cycling another N times. The procedure ends after repeating this entire procedure (outer cycle) N' times, for a total of N' times N inner cycles. Upon successful operation, if the ME is no. 1 (not no. 1), the photon ends up in cavity 'Off'' ('Off').
