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Rydberg atoms

Two to tango

The old adage that you can't tango alone is certainly true for humans. But recent experiments show that it may also be applicable to Rydberg atoms, which keep a beat through the coherent exchange of energy.

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Figure 1: a, Two coupled pendulums can exchange their energy resonantly (top) or off-resonantly (bottom).

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Correspondence to Robert Löw.

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Löw, R. Two to tango. Nature Phys 10, 901–902 (2014). https://doi.org/10.1038/nphys3153

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