Measurement of the world's smallest photon. (IMAGE)
Caption
Measurement of the world's smallest photon. a Model of the nanocavity, where the calculated strength of the electric field is shown with the colour scale. b Magnification around the narrow strip of material in the bowtie structure in the centre where photons are squeezed together. c Measurement of the electric field that emerges when photons are sent into the cavity by shining it with a laser, i.e., a microscopic image of the world's smallest photon. The white line shows the outline of the nanostructure for comparison.
Credit
Illustration: DTU.
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