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Joined: 06 Oct 2005
Posts: 602
Location: Toon Town
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"One can imagine the photons as bulletlike cylinders fired at the
target, Howell says, only each cylinder is two-to-three millimeters in
diameter and up to a meter long. As the cylinders pass through the
stencil, the parts that hit the opaque material are absorbed and no
longer represent locations at which the photon can potentially be measured."
UR optical buffer experiment without entangled photon pairs
"Birgit Dopfer found that photons that were 'entangled', or linked by
their properties such as momentum, showed the same wave-or-particle
behavior as one another. ... The double slits should filter out most
unentangled photons and either block or let pass both members of an
entangled pair, at least in theory."
Cramer's retrocausal experiment with entangled pairs.
Dopfer allegedly finds empirically that entanglement is a nonlocal lens
that faithfully images the diffraction pattern of one photon to the
other photon apparently non-metrically across any space-time barrier in
a controllable way. No ordinary signal has to propagate energy through
the 4D space-time to allow post-quantum nonlocal communication without
the coincidence circuit as I suggested in Robert Anton Wilson's "Cosmic
Trigger" and Martin Gardner's 1976 MIT Technology Review Letter and in
Lawry Chickering's March 12, 1982 letter to Richard DeLauer at DOD. This
is what is seen of course in spooky telepathic "remote viewing between
entangled minds." If this really happens,it overthrows mainstream
opinions on how quantum physics really works at the most fundamental
level. John Cramer is bringing back all of these heretical "voodoo"
ideas on Gnostic Magick without magic in physics today.
Dirac wrote in his classic text book "Quantum Mechanics" that 'the
photon interferes with itself." Even though each photon when measured
leaves a tiny localized imprint in a collapse, nevertheless before the
collapse the photon is spread out in a what can be a large complex wave
packet, e.g.
"two-to-three millimeters in diameter and up to a meter long"
whose shape can encode a message. For example, not knowing which slit
the photon passes, in the low intensity double slit experiment, one
photon at a time, the wavy fringe pattern builds up pixel by pixel
because each photon has the information diffraction pattern of the total
experimental arrangement. Therefore, we need a lot of photons to see the
pattern, the "message" provided that each photon in the large
statistical sample is prepared in the same way, in the same pattern. In
terms of Bohm's pilot wave theory, the message is imprinted in the shape
of the nonlocal quantum potential Q. In the case of the photon, as
distinct from an electron or a neutron etc. it's a "super Q" rather than
the plain Q. Encode the message of the nonlocal retrocausal signal in
the shape of the diffraction pattern. Does Nature forbid?
"Consider the famous double-slit experiment, in which individual photons
are beamed through a pair of adjacent gaps (slits) in a screen. As long
as researchers do not try to determine which of the two slits each
photon is passing through, light shined through the screen will create a
so-called diffraction pattern of alternating bright and dark spots.
The double-slit experiment demonstrates that a photon can in some sense
"feel" both slits, just like a wave passing through both at once. Like a
wave, each individual photon propagates away from the screen spread out
and carrying the whole diffraction pattern—but that does not mean each
photon creates a weak image of the whole diffraction pattern when it
hits the far wall. Instead, each photon lands in just one spot, and many
photons together create the pattern.
The new technique worked similarly. The group prepared weak pulses of
light that on average contained less than one photon. (That's possible
because the pulses were each in a superposition, or mixture of quantum
states; some pulses did not contain any photons and others contained one
photon, Howell says.)
The researchers shined the pulses through a stencil of the initials "UR"
and into a four-inch-long cavity filled with hot cesium vapor, which
acted as a drag on the light, slowing it down. After emerging from this
cavity, the pulses struck a four-square-millimeter region in a single
pinpoint location.
Each pulse struck the region somewhere in the "UR" shape carved out of
the light pulses by the stencil. But generating the whole image required
up to 100 million pulses, in part because a single photon detector had
to scan back and forth over the whole detection region, as described in
the January 26 edition of Physical Review Letters.
One can imagine the photons as bulletlike cylinders fired at the target,
Howell says, only each cylinder is two-to-three millimeters in diameter
and up to a meter long. As the cylinders pass through the stencil, the
parts that hit the opaque material are absorbed and no longer represent
locations at which the photon can potentially be measured.
"It's just like when you put Play-Doh through one of those stencils,"
Howell says. Like the Play-Doh, each pulse that passes through the
stencil does carry the whole "UR" shape, but, as with the two-slit
diffraction pattern, one photon does not produce the whole image on
being detected.
Howell says the experiment is the first demonstration that optical
buffering, or delaying of light, can reliably transmit two-dimensional
information—in this case an image. The kind of information sent down
optical fibers is normally encoded along the length of the pulse, he says."
http://www.sciam.com/article.cfm?chanID=sa003&articleID=5116CF53-E7F2-99DF-3B64CF41CFBB5B91
"The experiment builds on work done in the late 1990s in Anton
Zeilinger's lab, when he was at the University of Innsbruck, Austria.
Researcher Birgit Dopfer found that photons that were "entangled", or
linked by their properties such as momentum, showed the same
wave-or-particle behavior as one another. Using a crystal, Dopfer
converted one laser beam into two so that photons in one beam were
entangled with those in the other, and each pair was matched up by a
circuit known as a coincidence detector. One beam passed through a
double slit to a photon detector, while the other passed through a lens
to a movable detector, which could sense a photon in two different
positions.
The movable detector is key, because in one position it effectively
images the slits and measures each photon as a particle, while in the
other it captures only a wave-like interference pattern. Dopfer showed
that measuring a photon as a wave or a particle forced its twin in the
other beam to be measured in the same way."
SF Chronicle article cited on earlier messages in this thread
The claim here is that the shape of the diffraction pattern or quantum
potential Q is transmitted by entanglement from one photon to the other.
Of course, we need many photon pairs all prepared this same way in order
to decode the prophetic message from the future.
You can, perhaps, think of it something like this. Sender photon (a) has
Bohm quantum potential Qk(a) and receiver photon (b) has the same shape
quantum potential Qk(b) in the same kth diffraction pattern mode.
However, the entangled state of both photons does not factorize, it is a
superposition with spatio-temporal cross correlation summed over many
modes (many possible diffraction pattern shapes)
Q(a,b,t,t') = Sum over k Qk(a,t)Qk(b,t')
where t and t' are moments of detection of the individual photons in the
pair.
Passing (a) through the UR stencil in the future collapses the above
superposition into the single mode corresponding to
Qk(a) = UR stencil shape.
http://qedcorp.com/APS/URstencil.jpg
What is new here contradicting orthodox quantum measurement theory is
the assumption that the stencil forces a controlled collapse into a
desired mode or diffraction pattern (2D information pattern) that is the
message. Previous experiments have not had this feature and because of
the no-cloning theorem most physicists will say this will not happen -
an empirical question.
Does sender photon (a) in the future retrocausally imprint the delayed
choice inserted stencil "UR" on receiver photon (b) in the past. Is
entanglement Magick without magic Play Doh?
The superposition then collapses to the factorized quantum potential
Q(a,b,t,t') --> Qur(a,t)Qur(b,t')
This appears Rube Goldberg, contrived, but does Nature work that way?
Let experiments decide.
Also, why does the future delayed choice of stencil for (a) override
what happens to (b) in the past?
"To use this setup to send a signal, it needs to work without a
coincidence circuit. Inspired by Raymond Jensen at Notre Dame
University, Cramer then proposed passing each beam through a double
slit, not only to give the experimenter the choice of measuring photons
as waves or particles, but also to help track photon pairs. The double
slits should filter out most unentangled photons and either block or let
pass both members of an entangled pair, at least in theory. So a photon
arriving at one detector should have its twin appear at the other. As
before, the way you measure one should affect the other. Jensen
suggested that such a setup might let you send a signal from one
detector to another instantaneously -- a highly controversial claim,
since it would seem to demonstrate faster-than-light travel."
SF Chronicle article cited on earlier messages in this thread |
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