Single-photon double-slit with multiple apparatus?

[aletheia]

Personally, my view was more that it wasn’t a good way to test the history concept that you were interested in.

You’re right. Actually, you are all right.
I did my study, applied my reasoning and understood why the idea was wrong.
Thanks.

 

[Roberto Pavani]

True, but a fast optical shutter can provide a good approximation by defining when photons are allowed into the apparatus. The only caveat is that, within a given time window, there is always a non-zero probability of having two photons rather than one.