Abstract
Cavity-optomechanics is an ideal platform for the generation non-Gaussian quantum states due to the anharmonic interaction between the light field and the mechanical oscillator; but exactly this interaction also impedes the preparation in pure states of the light field. In this paper we derive a driving protocol that helps to exploit the anharmonic interaction for state preparation, and that ensures that the state of the light field remains close-to-pure. This shall enable the deterministic preparation of photon Fock states or coherent superpositions thereof.
Highlights
Optomechanical experiments provide accurate control over the quantum dynamics of mesoscopic mechanical oscillators and light fields at the single-photon level [1]
We propose a driving scheme for optomechanical systems for the deterministic preparation of close-to-pure, nonclassical states of light, and we exemplify the scheme with two-photon Fock states and the coherent superposition of this state and the vacuum state
The two most significant experimental imperfections are leakage of light from the cavity and thermalization in the mechanical oscillator. The latter can result in thermal excitations in the initial state of the mechanical oscillator, and it can result in dissipative dynamics during the process of state preparation
Summary
Optomechanical experiments provide accurate control over the quantum dynamics of mesoscopic mechanical oscillators and light fields at the single-photon level [1]. Because the interaction between such oscillators and light fields is anharmonic, there is great potential to generate nonclassical, non-Gaussian states [2,3,4,5,6,7] with various applications including quantum metrology [8,9,10], quantum cryptography [11,12,13], and more [14,15,16,17]. We propose a driving scheme for optomechanical systems for the deterministic preparation of close-to-pure, nonclassical states of light, and we exemplify the scheme with two-photon Fock states and the coherent superposition of this state and the vacuum state.
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