After all that discussion you should be able to follow this now which is basically the same thing with entangled atoms. The waveform view and the particle view differ markedly as in your original post of an photon entering a gravity well.

There detector can detect the wave without collapsing it by using some QM tricks of entanglement. I thought that bit might interest you.

http://phys.org/news/2016-05-atoms-entangled-emit.html

Last edited by Orac; 05/14/16 04:25 PM.
I believe in "Evil, Bad, Ungodly fantasy science and maths", so I am undoubtedly wrong to you.