I do not have a access to a physics lab, nor have I come across this type of a d

Question

I do not have a access to a physics lab, nor have I come across this type of a double slit experiment, hence I am curious if someone has tried this.

Given a double slit experiment setup with a detector. What happens if we have a detector at one of the slits, but we do not send one photon at a time (in other words, we send a bunch of photons without concerning ourselves about the count)?

My assumption is that we will see a particle (bullet) pattern like we would if we sent one photon at a time, is this correct?

Explanation / Answer

If you put a detector at one of the two slits, you obtain no interference. But this doesn't depend on whether you send a bunch of photons, or one photon at a time. If both slits are open and without detectors, you will obtain interference, no matter if you send one photon at a time or a bunch of photons. The "bullet" pattern is not due to sending one photon at a time, but to sending then through only one slit.

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