dual coherent emitter interference

From: DAH (dharder_at_bnl-dot-gov.no-spam.invalid)
Date: 11/02/04 

Date: 2 Nov 2004 08:29:41 -0600

Consider the classical interpretation of the classical implementation
of Young’s double slit experiment.

‘The incident beam can be made so weak that, on average, only one
photon at a time will pass through the apparatus and be incident on
the photographic plate. Because only one photon at a time goes
through the apparatus, the possibility of interference between
different photons is eliminated. An interference pattern will still
be on the photographic plate, however. Clearly, a photon that has
reached the photographic plate must have passed through either slit 1
or slit 2. Imagine it was slit 1; then, if slit 2 had been closed, no
interference pattern would have occurred. Hence, the seemingly
terrible paradox that the behavior of the photon is influenced by the
presence of a slit, through which it cannot have passed.’

The resolution of the paradox rests on the fact that the classical
causal space-time description of nature which rests on the “clear-cut
separability between the phenomena and the means of observing these
phenomena,” does not apply.

On the atomic scale, an “uncontrollable interaction between the object
and the measuring instrument” exists (the words in quotation marks
are those of Niels Bohr).

Consider the following suggestion for a non-classical implementation
of Young’s Double Slit experiment.

Thin films of silicon dioxide are deposited/grown on either side of a
thin, rigid, flat *** of opaque ceramic material, with a thickness
d. A solid state laser of wavelength w, a variable neutral density
filter, a beam splitter, a variable optical delay line, and a mirror
are deposited/grown/integrated into the assembly in such a way as to
deliver photons to both SiO2 films at the correct angle to create
effinescent waves along the SiO2 to ceramic interface on both sides
of the opaque ceramic substrate. Project the effinescent wave pair
at a cooled, low noise avalanche photodiode, capable of single photon
detection, positioned at the first order position yn; the zeroth order
would be orthogonal at distance L. Enclose the assembly in a
light-tight box and reduce the intensity of the laser with the
variable neutral density filter, until single photon effinescent wave
phenomena manifests.

This leads to two questions.
1) Would two closely spaced coherent emitters be equivalent to
Young’s double slit?
2) If the relative phasing of the effinescent waves is altered using
the variable optical delay line, does that effect the order spacing,
which is typically given by:
yn=nLw/d ?

DAH 11/2/04

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