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Re: Is photon a wave packet ?



Misattributing authority does not help. Note that the beginning of the
article uses "photons" in the plural. One photon does not create an
interference pattern. A sequence of single photons does. One photon is
not the same as a sequence of single photons, no matter how long the delay
between successive photons in the sequence. You don't see the pattern
until many photons have passed through the slits.

"Many" is not the same as "one"!

On Wed, 15 May 2002, Brian Whatcott wrote:

On Tue, 14 May 2002, Jack Uretsky wrote:
Note also that a single photon cannot create an interference patte=
rn.
Only a coherent assembly of photons can do that. It's like the leg=
al
principle that a person, acting alone, can never be guilty of a
conspiracy.

Jack must be using the word "cannot" in some legal sense with which
I am unfamiliar.

Here are notes from some "Can do" folks from Princeton, Brown, Cornel=
l,
Colgate, UAlberta and Sweden:
[Google: "single photon interference"]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Photon
Interference of a Single Photon. This Page contains
information about an experiment done with a ...
<imogen.princeton.edu/user/page/single_photon.html>

Single Photon Interference
=2E.. 7a55.20 Single Photon Interference. PURPOSE: To show
the two slit experiment with single photons ...
<www.physics.brown.edu/Studies/Demo/modern/demo/7a5520.htm>

Re: Single photon interference
=2E.. Re: Single photon interference. ... References: Re: Single phot=
on
interference: From: nospam@de-ster.demon.nl (JJ Lodder). ...
<www.lns.cornell.edu/spr/1999-04/msg0015757.html>

Re: Single photon interference
=2E.. Re: Single photon interference. ... Follow-Ups: Re: Single phot=
on
interference:
=46rom: Vesselin Gueorguiev <vesselin@baton.phys.lsu.edu>. ...
<www.lns.cornell.edu/spr/1999-04/msg0015683.html>

Single Photon Interference
Single Photon Interference. Lauren Heilig. Advisor: Dr. Enrique J. Ga=
lvez.
This
project aims at studying the wave-particle duality of light. A first =
set of
=2E..
<departments.colgate.edu/physics/ students/sresearch01/heilig.htm>

Five experiments
=2E.. 2. Single-photon interference. The ... 98%. Figure 2: Arrangeme=
nt
to exhibit single-photon interference. ...
<departments.colgate.edu/physics/research/ Photon/five_experiments.ht=
m>

Single Photon Interference
Single Photon Overview. -Laser (left) -Mercury Lamp (center)
-Photon Enclosure (center right) Photon Entrance. ...
<polaris.phys.ualberta.ca/users/keen/photon.html>

Delayed single-photon interference
Delayed single-photon interference. ... Stefan Kr=F6ll, Baozhu
Luo and R. Krishna Mohan. The project ...
<www-atom.fysik.lth.se/afdocs/Progrep978/b2.htm>


Brian Whatcott
Altus OK Eureka!


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you, because that is what I must do. Tonight it is only you and me, fish.
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