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Forums
Physics
Quantum Physics
A video about the delayed choice eraser that I made
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[QUOTE="vanhees71, post: 6489383, member: 260864"] It is very important to understand that the coin-die analogue is NOT a true analogue of the quantum situation, because in the latter case the single-photon observables are not determined but maximally uncertain, because the photon pairs are prepared in Bell states. The message is of course correct: There's indeed nothing violating causality and there are no retrocausal interactions. It's far from incomprehensible, because the very fact that physicists are able to conceptualize such a delayed-choice experiment using quantum theory (Wheeler) and also to realize it in the lab with high accuracy (e.g., Kim et al) shows that these physicists very well understood what's going on. If they'd not they couldn't have made the experiment at all let alone predict precisely the outcome of the experiment. [/QUOTE]
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Physics
Quantum Physics
A video about the delayed choice eraser that I made
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