Article View: sci.physics
Article #1321Communication using non-local quantum correlation
From: Mitsuharu Hadeishi
Date: Wed, 22 Jul 1992 09:53
Date: Wed, 22 Jul 1992 09:53
102 lines
6696 bytes
6696 bytes
I received the following communication from Dr. Jack Sarfatti a couple of days ago, and I thought it was important enough to post to the net: [begin edited quote (typos omitted) with permission from author, edits in square brackets]: It's hard to explain the basic idea in this format - but I will make a quick introduction. I would like you to get this into general circulation - I am not competent with using Well yet. The current experiments on photon pair polarization correlations cannot be used for communication - but a simple change of design will allow communication. Yes, it will allow communication from the future - I mean a backwards-in-time quantum radio as you put it. One must break the symmetry between the two detectors that detect the two photons in the same back to back pair. One must have the "transmitter photon" interfere with itself in a special way. The self-interference coherence information is teleported to the receiver photon using what Professor Costa de Beauregard of Institut Henri Poincare calls the "Feynman zig zag". Let the 4D space-time event for the pair emission from an atom be S. Let the irreversible measurement of the transmitter photon be at 4D event T in the light-like future of event S. Let the irreversible measurement of the receiver photon be at event R also in the lightlike future of S. The space-time interval between T and R is generally space-like which means a superluminal signal would have to connect them directly. But what happens, and I emphasize that this is standard quantum mechanics using the Feynman rules for how to combine amplitudes, the transmitter photon retarded wave arrives at T and is detected. Information on the setting of the transmitter at event T is sent backwards-in-time by an advanced transmitter photon wave. The advanced wave arrives at S just as the photon pair is being emitted. This is what Fred Hoyle calls a "loop in time" between events S and T. Thus, the twin receiver photon's polarization frame of reference is prepared from the future detection of its twin. The receiver photon carries that information into its future over to the detection event at R which analyses what T prepared. You can run the analysis the other way - it doesn't matter. What matters, however, is that T is active cause and R is passive effect the way the apparatus is configured. One can operate this in a "delayed choice mode" (Wheeler) in which T happens after R - this is the backwards-in-time quantum radio mode. This all comes from the old Wheeler-Feynman electrodynamics modified by John Cramer's "transactional" picture (done first by de Beauregard) and formalized by me. I have algebra based on Feynman rules to back up every detail of what I am talking about intuitively here. This is not handwaving. Now here is the beautiful effect that I predict. The equations show - I emphasize it is the equations talking not some time-travelling dwarf from Zeta Rediculi possessing Nick Herbert's mind - or Shirley Mac Claine's - the equations say that the coherent phase information at the transmitter disappears from the transmitter and reappears at the receiver as elliptical polarization of the receiver photon! Now I must tell you more about the apparatus if you want to grok this. I assume you want to grok it? The receiver is simply a birefringent calcite rhomb which provides two alternative paths for the receiver photon each of a different orthogonal linear polarization (say V(R) and H(R)) with counters for each path. The [transmitter] signal is measured in the difference between the count rates. In the ordinary experiments (e.g., Aspect in Paris) the count rates are equal indicating unpolarized light. [ . . . ] The transmitter is an interferometer. The first stage is the calcite rhomb as in the receiver. Let the V(T) path for the transmitter photon out the back of the calcite pass through a variable phase plate which is the modulator encoding the quantum message carried over to the receiver by the Feynman zig-zag. This is a phase modulation quantum connection communicator [ . . . ] The other H(T) path passes through a half-wave plate which transforms H(T) to V(T). The orginal V(T) path is reflected by non-absorbing (to make it simple) mirror M to 50-50 beam recombiner B which also catches the H(T)->V(T) beam. The two inputs to B have to (erase "to") The two inputs to B have two interferogram outputs one to each detector. Now if the light incident on T were not pair correlated then one would see local coherent interference effects as the position of the phase plate modulator was changed. But, and this is interesting, because of the distant nonlocal quantum correlations of the transmitter photon to orthogonal spin states of its twin receiver photon, this expected local coherence at the transmitter interferometer is not there! It has teleported (in the zig zag) over to the receiver - this is a nonlocally controllable induced polarization of the receiver photon which should have been unpolarized! The actual equation from the Feynman rules of standard quantum mechanics in the simple ideal case of 100 % efficient detectors and no absorption at M and B is that the difference in the count rates at the two receiver photon counters is equal to the sine of twice the misalignment angle between the settings of the calcite rhombs at events R and T multiplied by the [cosine] of the sum of the phase controllably variable phase delay of the transmitter phase plate plus the reflection phase shift at transmitter mirror M multiplied by the cosine of the reflection phase shift of the beam recombiner B at the transmitter. [ . . . ] So in order to see the new kind of quantum phase signal on the nonlocal connection the two calcite rhombs must be misaligned - a relative fixed angle of 45 degrees is optimal and the reflection phase shift at the transmitter interferometer beam recombiner must not be 90 degrees - as close to zero degrees is best - this is a matter of Fresnel equations in Maxwell's electrodynamics. [end quote of Dr. Jack Sarfatti] ------------------ Mitsu Hadeishi General Partner, Open Mind Research mitsu@well.sf.ca.us mitsu@cerf.net mitsu@netcom.com
Technical Details
Message-ID:
<2351@nic.cerf.net>Path:
arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!nic!mitsuShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!nic!mitsu From: mitsu@nic.cerf.net (Mitsuharu Hadeishi) Newsgroups: sci.physics Subject: Communication using non-local quantum correlation Message-ID: <2351@nic.cerf.net> Date: 22 Jul 92 09:53:04 GMT Organization: CERFnet Lines: 102