🚀 go-pugleaf

Postscript: Refutation of unitarity violation in FTL Communicator

#29 Look at equations #12 & #13 for single photon in the dangerous input
state
[|E> - |O>]/sqrt2  even when m = b = pi the output is never zero. We have an
indeterminate form 0/0 when phi = 0 but the limit is 1/2. That is, p(I) =
p(II) = 1/2 in the
case that was mistakenly thought to give p(I) = p(II) = 0.

#30 Nick Herbert has objected that the device will not work because of an
effective
superselection rule in calcite so that E and O (also e and o) can never be
coherently
recombined.  If that were true it would eliminate communication on the
connection. One
can conclude that retarded causality demands such a superselection rule.
Since even
double refraction should involve elastic scattering of photons from
electrons it is hard to
see how correlations of the photons in e and o paths to orthogonal matter
states would
occur.  If Nick Herbert is right then #12 and #13 are wrong.  This can
easily be tested
experimentally.  I have been assuming that the calcite is the optical analog
to a Stern-
Gerlach splitter for spinning magnetic particles.  There is no
superselection rule in that
case - is there?