How do entangled photons travel through several kilometers of fiber optic cable and still maintain their entanglement?

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As far as I understand, it is difficult to have entangled photons and particles stay entangled due to their interaction with the environment (as the photon passes through a medium of *place mind-bogglingly high # here* particles).

In: Physics

Anonymous 0 Comments

From what I’ve heard entangled photons will have an equal and opposite reaction despite their distance. This being the base nature of them being entangled.

I could be wrong though.

EDIT: I seem to have misread this. As for the medium I’ve never heard of interference being a problem.