Starship Asterisk*

@RJN In your statement of the problem, the only mention of existing interference is prior to, and the only mention of photon time-of-release is after, the phrase "the experiment is repeated, except now..." The only reasonable, literate interpretation of your statement is that the time meas...

@wavefunction: I understand you to be saying that (1) there is an interference pattern being displayed (at least if there's an ordinary screen) AND (2) there is the ability to determine time-of-flight accurately enough to distinguish slit identity. Now, (2) is possible only if the source is pulsed m...

Henning Makholm has given the correct naive answer in his point 4. It is identical to that which I posted a few hours earlier. (It appears that, by posting a quantitative development in TeX, I made it invisible to readers on this list.) But, as I said, this is a matter of naively assuming that the p...

The time of flight from source to screen detector via slit 1 is $t_1$, for slit 2 is $t_2$; $t_2 - t_1=\delta t$. Pulse the source narrower than $\delta t$. The time-modulation is $\pi(t)$, a pulse function. This ``should'' give time-of-flight information at the detector that can distinguish the sli...