From: John K Clark (jonkc@att.net)
Date: Thu May 09 2002 - 10:55:41 MDT
"scerir" <scerir@libero.it> Wrote:
>if we detect photon 1 in D2, we destroy
>interference in the interferometer 1? [Yes]
I'm not sure I understand your set up but If you added a polarizing filter
into your apparatus then the answer is certainly yes.
> if we detect photon 1 in D2, we destroy
> interference in the interferometer 1
Yes, but the key word is "if". You have no way of knowing or influencing the
outcome, it's a 50-50 crap shoot.
>and we also destroy interference in interferometer 2?
Yes.
> thus, detecting or not photon 1 in D2, can destroy, or not,
> the interference in the interferometer 2?
Yes.
>can we make a 0/1 telegraph?
No. To send a message I not only have to make a change of some sort in your
receiver there must also be some standard that change can be measured
against; Quantum Mechanics can provide the one not the other. Without both
all you have done is change one apparently random sequence into another
apparently random sequence. It's not really random of course but there is
no way you can know that until you communicate with the sender at light
speed or less. If I flip a coin and get tails that tells me nothing unless I
know that you did something and know what would have happened if you had not
done whatever it is you did.
John K Clark jonkc@att.net
This archive was generated by hypermail 2.1.5 : Sat Nov 02 2002 - 09:13:56 MST