Measurement and Preparation in the Double Slit Experiment

A. Neumaier · Feb 18, 2016

vanhees71 said:

Ok, that's still a superposition of states, not of "position".

And of spin states, not of position states!

naima · Feb 18, 2016

It has nothing to do with spin!
|u> is for the upper slit.

A. Neumaier · Feb 18, 2016

naima said:

It has nothing to do with spin!
|u> is for the upper slit.

Then your notation |u> and |d> stands for two spherical waves, not for two position eigenstates! And nothing at all is measured at the slits (if not energy), just prepared. There are no clicks anywhere. (Except perhaps in a detector later, which does a measurement (of the energy at the detector surface).

Measurement and Preparation in the Double Slit Experiment

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