One by one photon delay in double slit experiment

[hkonstas]

In a 'one photon at a time' double slit experiment, does the interference pattern still emerges if the time delay between individual photon emissions is increased to minutes or even hours?

 

[Nugatory]

In a 'one photon at a time' double slit experiment, does the interference pattern still emerges if the time delay between individual photon emissions is increased to minutes or even hours?

Yes, one dot a time.

 

[hkonstas]

Thank you for your reply. I am a beginner in Quantum physics and I am both amazed and perplexed with the double slit experiments. So theoretically the delay can even span for years and the interference pattern will still emerge.

I have one last question: in the same double slit experiment, within the time frame between single photon emissions, if we were to emit momentarily a laser beam between the slit and the detector screen, would that eliminate the interference pattern?

For example:

1- Emission of 1 photon through the double slit.
2-The photon hits the detection screen
3-A laser beam passes between the detection screen and the slits (wave scrambling?)
4-Another photon is emmited.

And so on.. would the interference pattern still emerge?