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when toggle format what by license comment
Dec 9, 2019 at 15:36 history edited user137289 CC BY-SA 4.0
link to graphene
Dec 9, 2019 at 11:05 comment added Emilio Pisanty This is indeed correct ─ for free-space interactions. In restricted dimensionality (say, if the photon is confined to a waveguide), the cross-section language needs to be dropped, and the interaction probability can go as high as 100% if the photon is on resonance (example, example).
Dec 9, 2019 at 10:55 history edited Emilio Pisanty CC BY-SA 4.0
Minor formatting fix.
Dec 9, 2019 at 8:32 history answered user137289 CC BY-SA 4.0