Single Photons in Two-slit Experiment

in the single or double slit experiment, when we lower the light intensity so much that only single photons are in the tube, then how much time passes between two photons appearing on the result screen? (the answer would also answer how much time passes between two energy states of the emitting electron)?
- Arpad (age 36)
Pacific Palisades

The more you lower the intensity, the longer the average time between photon detections gets. If you wait long enough to detect enough photons, you'll still get the same diffraction pattern.

Mike W.

(published on 08/26/2016)