archive: RE: SETI ETI Quantum Communication

RE: SETI ETI Quantum Communication

R.J. Fear ( (no email) )
Fri, 30 Oct 1998 10:35:15

Troy,

I tend to agree with you. And, unless someone has designed and built some
type of Heisenberg Compensator the prospect is a little on the scary side.

R.J.

At 08:14 AM 10/30/98 -0700, Troy Taylor <TroyT@medicaltech.com> wrote:
>Once again, someone stuff me back in my place here if I am wrong, BUT...
>
>I believe that this "quantum teleportation" would not transmitt any faster
>or farther than normal RF communications. Light is just another form of
>radiation. It travels through a medium at the speed of light for that
>medium. The method used to transfer the information for the object (its
>properties) was a laser. Thus, the limitations of the range and speed for
>transfering that object are those of the laser (light).
>
>The article stated, "Quantum teleportation allows information to be
>transmitted at the speed of light -- the fastest speed possible -- without
>being slowed down by wires or cables."
>
>Their point isn't that this will allow us to communicate faster, but rather
>that it might allow us to transmit the properties of an object at the speed
>of light from one location to the other. But the limitations are still on
>the method of the transportation. I.E. They used a laser to send the
>information from one location to another. To quote: "They used these two
>entangled beams to carry information about the quantum state of a third
>beam. The first two beams were destroyed in the process, but the third
>successfully transmitted its properties over a distance of about a yard
>(meter)."
>
>Thus, the quantum side of things just affects WHAT kinds of things we can
>send (I.E. perhaps a physical object) but not HOW fast or far we can send
>those things. Make sense?
>
>Another thing that disquieted me was the following from the IBM article: "it
>would produce an exact copy rather than an approximate facsimile, and it
>would destroy the original in the process of scanning it." I don't think I
>like the destroy part! heheheh. But hey, that's your typical teleportation
>requirement, right?
>
>Troy D. Taylor

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Robert J. (R.J.) Fear North Central Regional Coordinator
President The SETI League Inc.
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