Light is Captured as Both Particle and Wave

The Standard Model and beyond, QED, QCD, etc.

Light is Captured as Both Particle and Wave

Postby FrediFizzx » Mon Mar 02, 2015 9:25 pm

http://www.nbcnews.com/science/science- ... ve-n315936

http://www.nature.com/ncomms/2015/15030 ... s7407.html

I told you so that quantum particles are both waves and particles at the same time. :D
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Re: Light is Captured as Both Particle and Wave

Postby Q-reeus » Tue Mar 03, 2015 2:50 am

FrediFizzx wrote:http://www.nbcnews.com/science/science-news/physics-first-light-captured-both-particle-wave-n315936

http://www.nature.com/ncomms/2015/15030 ... s7407.html

I told you so that quantum particles are both waves and particles at the same time. :D

The real eye-opener in first linked article was visual proof of the nasty, aggressive nature of electrons! :mrgreen:
But seriously, will the simultaneous particle and wave detection claim stand up? Is this merely a semi-weak measurement regime? Can't think of a link right now but recall that for quite some time now it has been experimentally proven that one can gradually transition from particle-like to wave-like detection and vice versa in a two-slit experiment. This latest reminds of the buzz and lengthy controversy a decade ago over Afshar Two Slit Experiment. That seemed to overthrow Bohr complementarity by providing simultaneously both which-way detection and wave interference fringes. That one has just quietly faded though Afshar afaik still holds to his original claim.
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Re: Light is Captured as Both Particle and Wave

Postby Ben6993 » Thu Mar 05, 2015 1:59 am

Metal balls can show wave properties and particle properties simultaneously too, see:
https://uk.video.search.yahoo.com/video/play;_ylt=A2KLqImfIfhU_nUACMx2BQx.;_ylu=X3oDMTBycTlydWI1BHNlYwNzcgRzbGsDdmlkBHZ0aWQDBGdwb3MDOA--?p=sinusoidal+demonstration+using+metal+balls&vid=4119fe1a6a9de96be126f0ea3df86878&l=1%3A46&turl=http%3A%2F%2Fts3.mm.bing.net%2Fth%3Fid%3DVN.607990644583237030%26pid%3D15.1&rurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DyVkdfJ9PkRQ&tit=Pendulum+Waves&c=7&sigr=11bop7fla&sigt=10ebpd4kl&sigi=11r9fjfq8&age=1276105985&fr2=p%3As%2Cv%3Av&&tt=b
for some fascinating patterns.

However, the balls need interconnecting strings to make this work.
And photons need enforced resonance and capture along the nanowire (somehow).
I do not disbelieve the analysis, but I have a question as to the the screening out of irrelevant background noise. The egg crate picture looks, at least superficially, like a picture of atoms. And the nanowire will have a regular structure of atoms, which of course are producers of light. So is it absolutely clear that photons coming direct from the atoms in the wire are excluded from the results?
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Re: Light is Captured as Both Particle and Wave

Postby Q-reeus » Thu Mar 05, 2015 3:46 am

Ben6993 wrote:Metal balls can show wave properties and particle properties simultaneously too, see:
[url]...[/url] for some fascinating patterns.
However, the balls need interconnecting strings to make this work.

It may seem so with end-on view, but there is no coupling between swinging balls - just beat effects owing to the staggered string lengths thus oscillation periods. Two strings per ball provides lateral stability ensuring balls don't 'couple' via collisions. 'Wave-particle duality' there requires...uhmm...imagination! :D

The 2nd OP linked article deals with a many quasi-particle system and in such a case it seems there can be a sharing of particle and wave behavior but without violating complementarity. These seem to agree:
http://www.quora.com/Plasmonics/Have-th ... and-a-wave
https://briankoberlein.com/2015/03/04/two-for-one/
[Note: Edited out earlier commentary suggesting time snapshots were a form of cheating.]
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Re: Light is Captured as Both Particle and Wave

Postby Ben6993 » Thu Mar 05, 2015 3:35 pm

Q-reeus wrote
It may seem so with end-on view, but there is no coupling between swinging balls - just beat effects owing to the staggered string lengths thus oscillation periods. Two strings per ball provides lateral stability ensuring balls don't 'couple' via collisions. 'Wave-particle duality' there requires...uhmm...imagination! :D

Yes, I was too hasty and was wrong. There is no significant coupling. So the wave pattern is illusory. Well, it is a wave pattern at times but the balls are not engaged in any group collaboration or using feedback from one another.

As for the two links wrt the photon experiment, thank you. The second link referred to the effect being for a group of photons rather than showing a wave effect for a single photon. I had noted that myself previously, but accept that the experiment did not try to show single photon wave effects.

Some of the photos in the report seem to show variable numbers of peaks in the egg-crates? So that maybe answers my doubts. If the number of peaks can be varied then it is clear that each peak does not always correspond to a single atom in the nanowire. If there was such a correspondence I would think that the photons could be coming straight from the wire rather than from the SPPs (though I know very little about SPPs).
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