Do many photons interfere with them selves or each other?

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The discussion centers on the behavior of photons in the double slit experiment, specifically whether individual photons interfere with themselves or with other photons. It is established that when a beam of light is used at low intensity, photons pass through the slits one by one and still produce an interference pattern, indicating that each photon interferes only with itself in superposition. The introduction of detectors eliminates the interference pattern, confirming that detection collapses the superposition state.

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jimjones
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Hello,

If a beam of light is used in the double slit experiment instead of individual photons does each photon interfere only with itself in superposition or do the different photons interfere with each other? If detectors are used will the interference pattern still disappear?

Thanks
 
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Consider a beam with such low intensity that photons pass one by one.Photons can't be 'interacting' with one another,yet the interference pattern persists. The interference is lost if detectors are used.
 

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