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Quantum sound on a chip

A nanoelectromechanical system made from a nanobeam embedded in a phononic crystal and coupled to a pair of superconducting microwave oscillators can couple hypersonic sound quanta at 0.425 GHz and light quanta with high coherence.

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Fig. 1: Mechanical and electrical oscillators.


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Correspondence to Guido Burkard.

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Burkard, G. Quantum sound on a chip. Nat. Nanotechnol. 14, 311–312 (2019).

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