PerspectiveQuantum Processing

Catching the quantum sound wave

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Science  10 Oct 2014:
Vol. 346, Issue 6206, pp. 165-166
DOI: 10.1126/science.1260180

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  1. Classical and quantum sound.

    (A) Ultrasound imaging works by creating and detecting sound waves with piezoelectric crystals in the handheld “wand.” (B) A schematic of the superconducting device of Gustafsson et al. that operates in the quantum regime at cryogenic temperatures. An acoustic transducer coupled to a superconducting qubit is fabricated on a piezoelectric substrate. Surface acoustic waves are shown to interact in a quantum way with the artificial atom.