The demonstration of all-optical switching by confining light and cold rubidium atoms in a hollow-core photonic band-gap fibre may help bring the goal of single-photon switching closer to reality.
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Dayan, B., Silberberg, Y. Atoms and photons share quarters. Nature Photon 3, 429–430 (2009). https://doi.org/10.1038/nphoton.2009.125
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DOI: https://doi.org/10.1038/nphoton.2009.125
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