On 7/25/2013 1:21 PM, John Clark wrote:
On Tue, Jul 23, 2013 Jason Resch <jasonre...@gmail.com <mailto:jasonre...@gmail.com>>
> To me it seems that must be incorrect, because it would enable super
communication. By sending a continuous stream of entangled photons in
I can't send a message that way because I have no way of controlling if I send a dot or
a dash, if a photon polarized at 0 degrees hits a 45 degree filter there is a 50 50
chance it will get through and I can't change that. Quantum entanglement can influence
things faster than light but you need more than that to transmit information, you need a
standard to measure that change against, and Quantum Mechanics can't provide that
standard; all it can do is change one apparently random state to another apparently
Think of quantum entanglement as 2 magic coins, I have one and you have the other, no
matter how far apart we are if I flip my coin and it comes up heads then when you flip
your coin it will always come up heads, if my coin is tails then so will your coin when
you flip it. As marvelous as this fact is there is no way I can use the coins to send
you a message because I have no control over my coin, it could come out heads or tails,
so you see just randomness in the coin toss just like I do. It is only when we
communicate through conventional means (at the speed of light or less) do we realize
that my apparently random sequence of coin tosses and your apparently random sequence of
coin tosses are identical.
I think this misunderstands Jason's thought experiment. I think he's assuming the source
is polarized at 0deg, the same as A, not a random source as you assume. He's proposing
that inserting B will cause A to transmit some photons (~25%) that go thru C. Removing B
will result in no photons passing thru C. So removing and replacing B can send dots and
dashes to someone just beyond C. I don't think that's right, but I've been very busy and
haven't had time to figure out just why.
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