Opto-mechanical source of quantum light

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In quantum information, photons possess the advantage of weak interactions with the environment but also a disadvantage in that it is difficult to perform any non-linear operation on them. Thus, a Gaussian (quasi-classical) field will stay Gaussian most of time. However, non-linear interactions between the mechanical oscillator and optical cavity in an optomechanical system permit a non-classical evolution of the cavity field in the fourth and higher orders of expansion. In this project a bi-chromatic driving with a phase change after each mechanical period will be used to eliminate most optical and interaction terms in lower orders of expansion, allowing the non-classicality and purity of the resulting cavity field to be investigated.