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Cavity QED

Photons in single file

A 'single-photon server', producing a steady stream of single-photon pulses for up to half a minute, has been created by confining, cooling and controlling a neutral atom inside a tiny optical cavity.

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Figure 1: One at a time.

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Kuzmich, A., Kennedy, T. Photons in single file. Nature Phys 3, 219–220 (2007). https://doi.org/10.1038/nphys573

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