a new way to attempt a variation on QUICK & FLASH?
This sounds familiar.
"In order to discriminate between the two hypotheses, we must seek a material that can exhibit different effects when circularly and linearly polarized photons pass through it respectively. Note that the usual method of inserting a quarter-wave plate cannot be used here since the photons in one optical path may have two rotation directions. So we make use of roto-optic effect (or Faraday effect) to distinguish between circularly and linearly polarized photons. This is because a linearly polarized photon can be regarded as the combination of left-handed and right-handed circularly polarized components. When it passes through a roto-material, the velocities of the two components are different according to Fresnel’s roto-optic theory. Then there exists a phase shift between the two components. The polarization plane of the photon will rotate and the quantum state will change. As a circularly polarized photon passes through the roto-material, its polarization quantum state will not change since it has only one rotation direction."


No, I am trying to have it both ways not Sanders. There is no problem having it both ways. Partial measurements are an obvious idea. Wooters wrote a famous paper on it for the double slit in the big Wheeler Quantum Measurement book I think (Princeton). You can partially know which slit and still see a fuzzy fringe pattern. Measurements do not have to be perfect to be useful technologically.

In Sanders set up maybe we can use a Kerr cell at the a' output to modulate the entanglement signal at b'. But perhaps not. There may be a Catch 22 that the amount of Kerr phase shift in the a' beam needed to get the entanglement signal makes the overlap too small at b' to detect the signal? This would save Stapp's theorem in that case.

Now we have that paper from China that may reawaken Nick's old ideas in QUICK and FLASH?

From: Paul Zielinski <This email address is being protected from spambots. You need JavaScript enabled to view it.>
To: JACK SARFATTI <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Sent: Sun, July 10, 2011 12:00:39 PM
Subject: Re: Stapp's theorem for entangled coherent states

Either way I would say this is an interesting result.

It does seem that Sanders is trying to have it both ways with his quasi-orthogonal coherent states (13) with high alpha -- "distinct", but not quite orthogonal.