Recent content by Quantum of Solace

Yes, I admit I'm out of my comfort zone and this particular question mixes classical theory (destructive wave interference) with implications from quantum mechanics (wave function interference). I can't find any references to delayed choice light wave interference except in the context of...

Thread necromancer, here. I watched an excellent video by YouTuber "Applied Science", where he discusses and experiments with Rugate filters used as lens coatings. I urge you to check it out if that sounds interesting. In the video, he explains how you can create an anti-reflective coating...

I apologize in advance that this is not the usual format. I don't have a specific question, and it's not out of peer review just yet, but this new study seems pretty interesting overall. Does anyone here want to share any thoughts on this? Seems pretty darn interesting to me...

It took a while, but I finally found the reference: http://a-c-elitzur.co.il/uploads/articlesdocs/MultipleIFM.pdf Section 10, Page 13 "The Quantum Liar Paradox" Still trying to understand this properly, but it seems to me until the Z measurement (which box?) is performed, each particle Z...

Stephendaryl covered it pretty well. Thanks for replying.

I've seen Elitzur's brief presentations on this. Two excited atoms pointed at a detector. The detector goes off, it isn't known which particle fired the photon, so you interrogate one, it gives a definite answer but violates bell's inequality? I'm sorry but I'm lost at such a vague...

If two photons traveling in the same direction but out of phase cancel each other out, what happens to the energy and momentum?

I've seen a couple of lectures by Penrose where he describes an experiment to test superposition of physical location of a very small, but macroscopic object. I can't find a reference to it online, but the experiment involved sending a photon through a half-mirror, and depending on the route...

Bell proves that measurement of the state of B affects the state of A, no matter how separated in time or space. Call it 'interacts' or whatever you will... there is no transfer of energy or information so causality is not violated. The experiment at http://arxiv.org/abs/1303.0614 attemps to...

Bell's theorem says yes. I'm fine with that, formal QM allows it and causality is not violated. My post was asking... If one accepts the formalism and results of delayed choice experiments, why are people still asking about the "speed" of entangled interaction.

That's my point. The glove analogy doesn't work as Bell's theorem proves the hidden state (left or right?) doesn't exist until one of the gloves is observed. The most logical conclusion is that observing B affected the state of A, and if A was already recorded then yes, the speed is >...

I don't think it can. I think the concept of 'speed' is irrelevant. I think in the quantum world time is irrelevant, and so-called nonlocality is irrelevant to us in our time frame because no information can be gleaned until the datasets are compared and sorted, which can only happen at...

I have seen many times mention of measuring the 'speed' of state-change over quantum entanglement, and potentially measuring it. re: wave/particle 'duality' this paper explains everything extremely clearly and dispels such popular notions from my mind for a single particle...

Don't delayed-choice experiments render this moot? Or do they still potentially suffer from the freedom-of-choice loophole?

That's partly why I started the other thread on delayed choice (apart from some misunderstanding on the nature of light, which was kindly corrected). Quantum effects collapse the whole system regardless of spacelike separation, but not at a 'speed', since the effect happens even regardless of...