From: Eliezer S. Yudkowsky (sentience@pobox.com)
Date: Sat May 11 2002 - 10:01:26 MDT
scerir wrote:
>
> It is not easy to find a big good source of (just) entangled photons!
> There is always some noise in the SPDC. In these experiments
> they have to use filters, polarizers, and detectors of coincidences
> to be sure that they are recording just entangled photons events.
Yes, but if there was a pure source of entangled photons, would the
interference pattern then be *locally* noticeable, without need to compare
with the data at the opposite terminal? If so, then you can build an
interstellar ansible and either switch the interference pattern on and off,
or modulate it, according to taste. Am I missing something here?
> [btw, you can also "modulate" the "emission", if you shift the double
> slit D, along the vertical axis, you also shift the interference
> pattern on the screen S !]
-- -- -- -- --
Eliezer S. Yudkowsky http://singinst.org/
Research Fellow, Singularity Institute for Artificial Intelligence
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