I know. But no information was extracted from the welcher weg photons before they were erased. I.e., no consciousness "recorded" which way and then forgot the result. I think the act of recording the result, by a consciousness or anything else, is inherently irreversible. If no record is made, then erasure is perfectly possible. Just knowing that there were welcher weg photons that have been erased is not quite the same thing.
Bruce ---- this paper seems interestig (and also quantitative), a concrete example of the relationship between information and interference in quantum systems. https://arxiv.org/abs/1606.09442 Measurement-induced decoherence and information in double-slit interference Joshua Kincaid https://arxiv.org/search?searchtype=author&query=Joshua+Kincaid , Kyle McLelland https://arxiv.org/search?searchtype=author&query=Kyle+McLelland , Michael Zwolak https://arxiv.org/search?searchtype=author&query=Michael+Zwolak (Submitted on 30 Jun 2016) > The double slit experiment provides a classic example of both interference > and the effect of observation in quantum physics. When particles are sent > individually through a pair of slits, a wave-like interference pattern > develops, but no such interference is found when one observes which "path" > the particles take. We present a model of interference, dephasing, and > measurement-induced decoherence in a one-dimensional version of the > double-slit experiment. Using this model, we demonstrate how the loss of > interference in the system is correlated with the information gain by the > measuring apparatus/observer. In doing so, we give a modern account of > measurement in this paradigmatic example of quantum physics that is > accessible to students taking quantum mechanics at the graduate or senior > undergraduate levels. > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
