Submitted by TheGandPTurtle t3_111g7s9 in askscience
tpolakov1 t1_j8jji5t wrote
Reply to comment by pavilionaire2022 in Light traveling through a medium that slows it. Does the same photon emerge? by TheGandPTurtle
Yes and no. The entanglement will be most certainly lost if it flies through a room temperature chunk of material consisting of billions of atoms.
In a more idealized case of it interacting with just a single cold atom, it can be preserved and will entangle with the atom also.
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