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Items tagged with "three-body interactions"

A red beam with packets of photons represented as dots passes through a cloud of atoms represented by a cluster of blue spheres.
April 26, 2021

Two (Photons) is Company, Three’s a Crowd

Photons—the quantum particles of light—normally don’t have any sense of personal space. A laser crams tons of photons into a tight beam, and they couldn’t care less that they are packed on top of each other. Two beams can even pass through each other without noticing.