I have to do an experiment for my physics class and I was thinking of doing the double slit experiment. Ideally I'd like to do the single photon version if its possible but I realize that's probably too ambitious. If I used neutral density filters to reduce the output from a laser pointer how would I detect the photons? Would it be possible to use a digital camera? Also since I have to do this in my physics class another problem is getting the room dark enough. Could I use a box and cover any openings or would it not be big enough? Thanks for any help.