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Solve algorithms without running it., Quantum shenanigans
Posted: Thu Feb 23, 2006 12:19 am
by DiscoDave
First spotted on
http://www.arrse.co.uk
By 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."
http://www.physorg.com/news11087.html
Posted: Thu Feb 23, 2006 12:22 am
by andyman
yeah this is why i'm not getting a new computer, not with this technology right around the corner
HEY FARVA!
Posted: Thu Feb 23, 2006 12:23 am
by Grandpa Stu
exotic, that sounds hawt.
oh yeah
Posted: Thu Feb 23, 2006 12:23 am
by Grandpa Stu
btw can you guys help me with that math problem?
Posted: Thu Feb 23, 2006 12:30 am
by eepberries
I wish I could do work without ever having to actually do work
Re: oh yeah
Posted: Thu Feb 23, 2006 1:42 am
by Guest
Grandpa Stu wrote:btw can you guys help me with that math problem?
42
Posted: Thu Feb 23, 2006 1:47 am
by Tsakali_
43 is the new 42
Posted: Thu Feb 23, 2006 2:08 am
by Guest
Is it? I really thought 42 was a permanent thing you know... the whole secrets of the universe and stuff simplified you know...
Posted: Thu Feb 23, 2006 2:21 am
by ek
Might be your IQ.
Posted: Thu Feb 23, 2006 2:35 am
by Guest
Might be the number of dicks you sucked in your lifetime too so shut the fuck up faggot.
Re: oh yeah
Posted: Thu Feb 23, 2006 2:52 am
by Pext
Kracus wrote:Grandpa Stu wrote:btw can you guys help me with that math problem?
24
fixed ...
Posted: Thu Feb 23, 2006 2:55 am
by Guest
You know pext did you choose your avatar because it looks cool or to represent your fucking unoriginal and "infinite" repeating responses
Posted: Thu Feb 23, 2006 2:59 am
by andyman
Kracus wrote:You know pext did you choose your avatar because it looks cool or to represent your fucking unoriginal and "infinite" repeating responses
talk about the pot calling the kettle a negro....
Posted: Thu Feb 23, 2006 6:18 am
by simply
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.
Posted: Thu Feb 23, 2006 6:30 am
by [xeno]Julios
Posted: Thu Feb 23, 2006 6:38 am
by mjrpes
This is making my head 'spin' lol
Re: oh yeah
Posted: Thu Feb 23, 2006 11:52 am
by MKJ
Kracus wrote:Grandpa Stu wrote:btw can you guys help me with that math problem?
42
reverse that
Posted: Thu Feb 23, 2006 12:59 pm
by DiscoDave
Posted: Thu Feb 23, 2006 1:21 pm
by werldhed
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.
Are you at a school? You can just grab the original article from Nature if you're really interested.
Here's a snippet from the
Methods section (the whole paper doesn't format correctly with copy/paste):
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').
From: Hosten et al. Nature 2006; 439, 949-952.
Posted: Thu Feb 23, 2006 5:31 pm
by Iccy
Kracus wrote:Is it? I really thought 42 was a permanent thing you know... the whole secrets of the universe and stuff simplified you know...
Nothing in life in permenant, why would that be also ?
Posted: Thu Feb 23, 2006 5:33 pm
by bitWISE
shenanigans
yar
Posted: Thu Feb 23, 2006 5:58 pm
by Grandpa Stu
evil shenanigans!