Single-particle interference only when imperfect path detectors click simultaneously
Alfredo Luis, Isabel Gonzalo · European Journal of Physics · 2015
We address particle interference in a Young interferometer with observation of the path by means of imperfect detectors. With a suitably chosen reading of the imperfect detectors we find that interference would be recorded only when both path detectors click simultaneously, while the interference is completely lost when only one detector clicks. We draw as many parallels as possible with classical-optics interference.