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Electromagnetic waves representation as superposition of single photons

What is it about?

Up to now, the electromagnetic waves were respresented through the Electric and Magnetic fields. However, the Electric and Magnetic fields derive from a single field, the Vector Potential. The quantization of the Vector Potential leads to the reperesentation of photons. Thus, the electromagnetic waves can be represented from a unique field, the Vector Potential, as a superposition of photons.

Why is it important?

The quantization of the Vector Potential amplitude is enhanced at a single photon level showing that all electromagnetic waves, whatever the frequency, are composed of a superposition of single photons. Thus, it is the first time the electromagnetic waves can be represented through a unique field, the quantized Vector Potential.

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Constantin Meis
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