Scientific article
Open access

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

Published inPhysical review letters, vol. 112, no. 14
Publication date2014

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.

Citation (ISO format)
GALLAND, Christophe et al. Heralded Single-Phonon Preparation, Storage, and Readout in Cavity Optomechanics. In: Physical review letters, 2014, vol. 112, n° 14. doi: 10.1103/PhysRevLett.112.143602
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Article (Published version)
ISSN of the journal0031-9007

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