Re: FTL by Down-converting
From: chronon (stephen_at_chronon.org)
Date: 10/27/04
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Date: Wed, 27 Oct 2004 16:00:10 +0000 (UTC)
hheffner@mtaonline.net (Horace Heffner) wrote in message news:<hheffner-2510040558170001@dialups-321.palmer.mtaonline.net>...
> FTL by Down-converting
>
> A method is proposed here to achieve faster than light (FTL) communication
> by the use of down-converters. A down-converter splits a photon into two
> photons each having half the energy of the original photon.
>
I've been thinking along similar lines, in fact just this morning I
did a Google search for "downconverting polarisation" (but I didn't
find anything useful). I think the problem is likely to be that a
downconverter doesn't preserve the relevant quantum state of the
photon, and so the device won't work.
Quantum theory says that you can produce two particles with the 'same'
quantum state but not more than two. ('same' in the sense that they
can be equal and opposite). If you could produce three, four or more
photons in the same state then that would be a problem for quantum
theory.
Stephen Lee
www.chronon.org
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