Young's Double Slit - Low intensity

[elevenb]

Homework Statement

Having recently completed an experiment on Young's double slit experiment for both high and low intensity light; I am having trouble writing conclusions in the report. In one part of the experiment I know I was firing only one photon at a time down the tube, and I achieved an interference pattern. I know how to describe this if my particle was an electron with a quantum wavefunction approach - however there doesn't seem to be such a wavefunction for a photon. Is this correct?

Homework Equations

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The Attempt at a Solution

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[drvrm]

In one part of the experiment I know I was firing only one photon at a time down the tube, and I achieved an interference pattern. I know how to describe this if my particle was an electron with a quantum wavefunction approach -

how you could do it? and how the photon was counted?