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Quantum physics

Atomic doughnuts from single photons

Analysis of the interaction between a photon and an ensemble of some 3,000 atoms trapped between two mirrors has revealed a form of multi-atom quantum entanglement that has no counterpart in classical mechanics. See Letter p.439

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Figure 1: Creating highly shared entanglement.

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Correspondence to James K. Thompson.

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Thompson, J. Atomic doughnuts from single photons. Nature 519, 420–421 (2015). https://doi.org/10.1038/519420b

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