sending signal back through time
16 Nov 2006 15:57:28 UTC
Topic 192075
(moderation:
i've first heard of
this sensational announcement on Slashdot today.
This is one next step in exploiting entanglement paradox - namely the instantinious collapse of wave function of two entangled particles when change in one of it requires instantinious change in the other no matter how far apart they are.
Quote:
We're going to shoot an ultraviolet laser into a (special type of) crystal, and out will come two lower-energy photons that are entangled,"
Quote:
"one of the entangled photons will be sent through a slit screen to a detector that will register it as either a particle or a wave -- because, again, the photon can be either. The other photon will be sent toward two 10-kilometer (6.2-mile) spools of fiber optic cables before emerging to hit a movable detector, he said.Adjusting the position of the detector that captures the second photon (the one sent through the cables) determines whether it is detected as a particle or a wave.
They claim they will be able to send signal back in time from one photon to the other.
Quote:
The trip through the optical cables also will delay the second photon relative to the first one by 50 microseconds, Cramer said.Here's where it gets weird.
Because these two photons are entangled, the act of detecting the second as either a wave or a particle should simultaneously force the other photon to also change into either a wave or a particle. But that would have to happen to the first photon before it hits its detector -- which it will hit 50 microseconds before the second photon is detected.
This claim of sending signal back in time is not what interested me (- since they cannot control the outcome of the 2nd photon one can always claim that it was the first photon that defined the outcome of the second one and not vice versa) in the article.
But what interested me is the fact they will use a delaying fiber and movable detector and in
principle can try to determine at what distance the entangelment is no more - namely at what distance outcomes are always in accordance with entanglement and at what distance they sometimes are not in accordance with entanglement
sending signal back through time
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i believe that humans are way behind real time events...
so as a NON expert, i believe we can detect a 'future' event...
however the 'future' event is actually the past...
the human brain is too slow at detecting the actual present moment!
but we cannot interact with an actual past event...
there is no actual future event...
so we are still left with only a present moment...
our interpretation of the present moment takes too long as humans!
the universe in real time has no speed limit, the human brain limits our speed;
everything is true, the opposite of everything is also true
Sorrry - in my first post i
)
Sorrry - in my first post i missed the point of the experiment:
So they claim they can control the outcome of the second photon by positioning their moving detector. This is getting really exciting then - if we position detecter to register 2nd photon as a wave - will we be able to detect it if the 1st photon registered as particle 50 mksec earlier ?
I am still in doubt if they can control the outcome of entangled photon ?
RE: Sorrry - in my first
)
Debugas,
Thanks so much for the info sir, I'm trying to understand what is going on here. You help to see the whole picture!
Can quantum paradoxes be related to someone forcasting the future?
Can the mind tap into the quantum world?
Is space,time,and thought closer related than we think?
I'm just a rookie sir,
thank you so much
Ernie
God Bless