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arXiv · 1803.06767

Generation and detection of non-Gaussian phonon-added coherent states in optomechanical systems

Jie Li·Simon Gröblacher·Shi-Yao Zhu·G. S. Agarwal
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Abstract

Adding excitations on a coherent state provides an effective way to observe nonclassical properties of radiation fields. Here we describe and analyse how to apply this concept to the motional state of a mechanical oscillator and present a full scheme to prepare non-Gaussian {\it phonon}-added coherent states of the mechanical motion in cavity optomechanics. We first generate a mechanical coherent state using electromagnetically induced transparency. We then add a single phonon onto the coherent state via optomechanical parametric down-conversion combined with single photon detection. We validate this single-phonon-added coherent state by using a red-detuned beam and reading out the state of the optical output field. This approach allows us to verify nonclassical properties of the phonon state, such as sub-Poissonian character and quadrature squeezing. We further show that our scheme can be directly implemented using existing devices, and is generic in nature and hence applicable to a variety of systems in opto- and electromechanics.

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quant-phcond-mat.mes-hallphysics.optics

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Jie Li, Simon Gröblacher, Shi-Yao Zhu, G. S. Agarwal. 2018-03-19. Generation and detection of non-Gaussian phonon-added coherent states in optomechanical systems. https://doi.org/10.1103/physreva.98.011801

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