Youngs Experiment - Single Photons

Young's experiment, one photon at a time. Real-time histogram of photon arrival vs angle.The classic interference pattern raises the questions: Which slit did the photon go through? and How can adding more photons make it darker?
Links at end of tutorial
Interference: Young's experiment with single photons and Is there a paradox?

[themistoklischronis]

Joe, thanks for this. I have the experiment, performed it, works wonderfully. I have a question regarding your comments between minute 2:20 to 3:00. What do you mean "more photons but less signal" and how does this tie to the rest? While we are at it, ould you recommend any additional experiments where we can take advantage the TeachSpin's set up? Thanks again

[richardburton]

How do I know that there aren't photons in the machine that aren't being detected by the detector?

[abhishekshah]

I rewatched from 2:23 at least 10 times I cannot believe single photons actually behave like this.

[abhishekshah]

In your experiment, the screen where you measure the photons remain unchanged as you move from single slit to double slit? Does this imply minima regions in the double slit pattern receive less no. of photons/sec than it was receiving with a single slit open?

[larrybeckham]

So, I know the evidence is not there but do you support Schrödinger's waveform collapse, Many-Worlds Interpretation, Many Interacting Worlds, hidden variables, or what.