archiv~1: Re: SETI Quantum Communications?

Re: SETI Quantum Communications?

Brian Wong ( )
Mon, 2 Nov 1998 10:48:25 -0800 (PST)


The 'action at a distance' phenomena appears to be more than observational
interpretation. It is real. According to this URL:

Caltech has succeeded in 'teleporting' a set of quantum states for a
photon stream across some small distance. They copied a set of quantum
states form point A to point B with high fidelity. If I'm not mistaken,
'action at a distance' appears to have no spatial nor temporal
dependencies (but don't quote me on that). :-)

There has been some discussion here of the difficulties encoding/decoding
data in this way but if true teleportation has been done, as the Caltech
announcement suggests, then data has been successfully encoded/decode
through a quantum connection. Therefore, true quantum communication is
indeed possible. That Caltech web page also discusses ideas for a
'quantum computer'. Now that would be nice to have.

Brian Wong

On Mon, 2 Nov 1998, Daniel Boyd Fox wrote:

> Well, I could see it possibly providing a secure channel between
> extra-terrestrial civilizations when used with some other method of
> communication (laser or microwave), but I can't see it providing an FTL
> link, only a method of encryption.
> 73,
> Daniel Fox
> On Mon, 2 Nov 1998 wrote:
> >
> > It makes sense that people would ask. I honestly have not dug out the physics
> > articles so I would say my knowledge on this is sketchy at best. I seem to
> > recall that the real question was how this would work with something besides
> > photons--and how the correlation degrades with distance.
> >
> > 73
> > Chip N1IR
> >