Very interesting response, Ken. Am I correct that what you're saying is that observation "extracts information," and that that is what causes waveform collapse? Is that a widely shared understanding, or is the reason observation causes waveform collapse debatable? Are you saying that in the...
So are you both agreeing that it is not the erasure of the previously observed information that leads to the interference pattern? Is that a widely shared understanding?
Thanks for your reply. I'll try to restate. My question is about what the eraser experiment actually proves. It seems to me that other mechanisms for erasing the which-path information (for example, actually and irrevocably erasing that information before looking at it) do not create the same...
Hi all. I am new here, and am very interested in developments in theoretical physics, though I am not trained as a scientist. I am hoping some of you can help answer a question.
The quantum eraser experiment is said to prove that when which-path information is "erased" we get an...