Scientific American claims there is an experiment testing the Copenhagen Interpretation

Brett Hall <[email protected]>
Newsgroups gmane.science.physics.fabric-of-reality
Message-ID <[email protected]>
http://www.scientificamerican.com/article.cfm?id=quantum-delayed-choice

Highlights include these gems:

"New experiments demonstrate that photons not only switch from wave to particle and back again but can actually harbor both wave and particle tendencies at the same time. In fact, a photon can run through a complex optical apparatus and disappear for good into a detector without having decided on an identity—assuming a wave or particle nature only after it has been destroyed."

"Physicists have shown in recent years that a photon "chooses" whether to act as a wave or a particle only when forced. If, for instance, a photon is steered by a beam splitter (a kind of fork in the optical road) onto one of two paths, each leading to a photon detector, the photon will appear at one or the other detector with equal probability. In other words, the photon simply chooses one of the routes and follows it to the end, like a marble rolling through a tube"

I like how in that paragraph "chooses" becomes just chooses.

Finally: 

"Quantum information researcher Seth Lloyd of the Massachusetts Institute of Technology dubbed the phenomenon "quantum procrastination," or "proquastination" in a commentary for Science accompanying the two research papers. "In the presence of quantum entanglement (in which outcomes of measurements are tied together)," he wrote, "it is possible to hold off making a decision, even if events seem to have already made one."

The new experiments add another wrinkle to the warped world of quantum mechanics, where a photon can be seemingly whatever it wants, whenever it wants. "Feynman called it the one true mystery of quantum mechanics," Shadbolt says of wave–particle duality. "It's deeply, deeply strange. Quantum mechanics is deeply weird, completely without classical analogue, and we just have to accept it as such.""

It seems that everything would be so much more clear if only they read FoR and BoI and embraced the multiverse.

What do the physicists here think about this experiment? What's it actually showing? I didn't get it...I only "got" that they seemed to be all doe-eyed about the jargon of wave-particle duality and the "woo".

Brett.

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