The manipulation of the quantum properties of light involves its technically challenging strong interaction with matter. Now, an experiment shows that when light propagates through a waveguide it only takes a weakly coupled line of atoms to single out its photons, or bunch them together, unveiling and controlling its quantum nature.
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Solano, P. Guiding light to non-classicality. Nat. Photonics 14, 716–718 (2020). https://doi.org/10.1038/s41566-020-00719-1
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DOI: https://doi.org/10.1038/s41566-020-00719-1
