It seems, one could exploit the Casimir effect to send messages across arbitrarily-large distances with carefully-tuned Casimir plates.

Obviously, relativity would preclude FTL information transfer, but as long as one did not try to measure the signal timing and impose an external reference frame of time, then there would be no violation of the speed of light limit, and would, in theory, be communicated instantaneously (presumably along an extra-dimensional Calabi-Yau surface/"brane").

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    $\begingroup$ @lurscher: As other people have said--- extraordinary claims require only ordinary evidence, just more of it, and more carefully analyzed. That's the basic principle of science. On the other hand, there is good evidence that Casimir effect does not allow FTL, because it can be calculated without any "vacuum" mysticism, just by induced polarizations interacting with other induced polarizations (Casimir force and Van-Der-Waals force are one and the same) and these obviously propagate at the speed of light. $\endgroup$ – Ron Maimon Aug 27 '12 at 21:22
  • $\begingroup$ Possible duplicate: physics.stackexchange.com/q/18835/2451 $\endgroup$ – Qmechanic Aug 28 '12 at 3:37
  • $\begingroup$ why would measuring or not the signal delay do anything? is not like the signal delay is part of some nonconmuting observables. $\endgroup$ – lurscher Aug 31 '12 at 23:22
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    $\begingroup$ what is quantum resonance? it has something to do with crystals and chakras? $\endgroup$ – user56771 Sep 1 '12 at 0:39
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    $\begingroup$ @MarkJ, so, show us the resonant absortion equation in the receiver casimir plates that describes the amplitude oscillation. $\endgroup$ – user56771 Sep 29 '12 at 0:32

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