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Heralded Single-Phonon Preparation, Storage, and Readout in Cavity Optomechanics

Galland, Christophe
Piro, Nicolas
Kippenberg, Tobias J.
Published in Physical Review Letters. 2014, vol. 112, no. 14
Abstract We show how to use the radiation pressure optomechanical coupling between a mechanical oscillator and an optical cavity field to generate in a heralded way a single quantum of mechanical motion (a Fock state). Starting with the oscillator close to its ground state, a laser pumping the upper motional sideband produces correlated photon-phonon pairs via optomechanical parametric down-conversion. Subsequent detection of a single scattered Stokes photon projects the macroscopic oscillator into a single-phonon Fock state. The nonclassical nature of this mechanical state can be demonstrated by applying a readout laser on the lower sideband to map the phononic state to a photonic mode and performing an autocorrelation measurement. Our approach proves the relevance of cavity optomechanics as an enabling quantum technology.
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GALLAND, Christophe et al. Heralded Single-Phonon Preparation, Storage, and Readout in Cavity Optomechanics. In: Physical Review Letters, 2014, vol. 112, n° 14. https://archive-ouverte.unige.ch/unige:36551

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Deposited on : 2014-05-13

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