Converting light to sound in cold quantum systems

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Oscillators lie at the core of many precision quantum experiments. The oscillations can exist in atomic clocks used for accurate timing, laser and masers, or a variety of other devices, but the regular cycling of quantum oscillators play an essential role in modern science and engineering. However, most uses have been confined to the electromagnetic regime, where the vibrations exhibit as photons; the quantum states of mechanical oscillators, where the vibrations are sound waves, have proven more difficult to control.   More...