Browsing thru more papers by TMarshall, I find the one below…
http://arxiv.org/abs/quant-ph/9711046
Note the last line,
“We conclude that misuse of the Photon Concept has resulted in a mistaken
recognition of ‘nonlocal’ phenomena.”
And this one sounds like a good one…
Are atoms waves or particles?
Abstract
It is shown that the Kapitza-Dirac effect with atoms, which has been
considered to be evidence for their wavelike character, can be interpreted
as a scattering of point-like objects by the periodic laser field.
-mark
---------------------------------------
The myth of the photon
Trevor W. Marshall, Emilio Santos (Mathematics Dept., Manchester Univ. and
Univ. de Cantabria)
Abstract
We have shown that all "single-photon" and "photon-pair" states, produced in
atomic transitions, and in parametric down conversion by nonlinear optical
crystals, may be represented by positive Wigner densities of the relevant
sets of mode amplitudes. The light fields of all such states are represented
as a real probability ensemble (not a pseudoensemble) of solutions of the
unquantized Maxwell equation.
The local realist analysis of light-detection events in spatially separated
detectors requires a theory of detection which goes beyond the currently
fashionable single-mode photon theory. It also requires us to recognize that
there is a payoff between detector efficiency and signal-noise
discrimination. Using such a theory, we have demonstrated that all
experimental data, both in atomic cascades and in parametric down
conversions, have a consistent local realist explanation based on the
unquantized Maxwell field.
Finally we discuss current attempts to demonstrate Schroedinger-cat-like
behaviour of microwave cavities interacting with Rydberg atoms. Here also we
demonstrate that there is no experimental evidence which cannot be described
by the unquantized Maxwell field.
We conclude that misuse of the Photon Concept has resulted in a mistaken
recognition of "nonlocal" phenomena.
From: Mark Iverson-ZeroPoint [mailto:[email protected]]
Sent: Thursday, December 01, 2011 11:27 PM
To: [email protected]
Subject: [Vo]: Spontaneous parametric up/dn-conversion...
Just a couple of papers below that might be of interest to some Vorts…
Why couldn’t SPUC/SPDC be the mechanism channeling the excess energy into
lower forms of energy (i.e, heat, phonons, lattice vibrations) in LENR?
Instead of producing a few highly energetic particles, the energy is spread
out amongst a larger population of lower forms of energy…
-mark
--------------------------------
Nonlocality - The party may be over!
Trevor W. Marshall
Dept. of Mathematics, University of Manchester, Manchester M13 9PL, U. K.
Abstract
We demonstrate that the phenomenon known as Spontaneous Parametric Down
Conversion is really an amplification, in a nonlinear crystal pumped by a
laser, of certain pairs of modes of the electromagnetic zero-point field.
The demonstration is achieved by showing the existence of a related
phenomenon, Spontaneous Parametric Up Conversion. This phenomenon,
once observed, will cast doubt on the quantum-optical theory, which treats
photons as the elementary objects of the light field. It will also lend
greater credibility to the zero-point field description of optical
entanglement phenomena. That description is based on the unquantized light
field and is consistently local, in contrast with the nonlocal description
of Quantum Optics.
--------------------------------
Femtosecond spontaneous parametric upconversion and downconversion in a
quadratic nonlinear medium
Jinyu Sun, Shian Zhang, Tianqing Jia, Zugeng Wang, and Zhenrong Sun
JOSA B, Vol. 26, Issue 3, pp. 549-553 (2009)
http://dx.doi.org/10.1364/JOSAB.26.000549
Abstract
Spontaneous parametric up-conversion (SPUC) and spontaneous parametric
down-conversion (SPDC) have been observed in the β-barium borate (BBO)
crystal, and their mechanisms are experimentally and theoretically
investigated. SPUC, tuned from 530 to 600 nm with a FWHM of about 25 nm, can
be attributed to the sum frequency between the quantum noise and the
fundamental laser pulse in the type II phase matching condition (e+o→e).
SPDC, tuned from 480 to 520 nm with a FWHM of about 15 nm, can be attributed
to the difference frequency between the quantum noise and the fundamental
laser pulse in the type I phase matching condition (e→o+o).
