I have read that circularly polarized light forms from the superposition of two linearly polarised light. Then is it true that polarisation can't happen with single Photon because it always need at least two photons to interfere with each other and superimpose the electric vectors?
If polarisation can happen with single-photon then how does it happen?
[Physics] Does polarization happen with single Photon
electromagnetismphotonspolarizationsuperposition
Best Answer
Single photons are polarized.
The state of a circularly polarized photon can be described as a quantum mechanical superposition of two linearly polarized states. Note that this varies from your description in two ways. The photon does not form from two other photons, it's state does. And the combination is quantum mechanical superposition which is not the same as combining together two photons.