archiv~1: SETI quantum communication

SETI quantum communication

Zoltan Farkas ( farkas@almos.vein.hu )
Tue, 03 Nov 1998 10:51:57 +0100

Hi,

This discussion is very interesting, theres's just one thing not clear
for me: in order to teleport information, the particle beam must first
arrive at the receiver side, since you're teleporting quantum states,
not the particles themselves. So if you want to send a message to
someone at a distance of, say, 40.000 LYs, you must first send the
"half-photons", wait for 40.000 years (while storing the other
"halves"), and when your photons finally arrive, it is only then, when
you can start the actual communication, and you must maintain a
"dedicated line", a continuous stream of particles, otherwise, if you
hang up once, the 40.000 years "dial-up" period starts again.

If this indeed was the case, and quantum teleports were in use in our
Universe, we should see many continuous streams of particles (not
necessarily photons, neutrinos???), from and to many directions,
something like the cosmic background radiation. We would see no
modulation, coding, doppler correction whatever.

Am I wrong somewhere? Sorry if I missed something trivial.

Zoltan Farkas
SETI League Regional Coordinator for Hungary