Quantum-criticality-induced strong Kerr nonlinearities in optomechanical systems

Xin You Lü, Wei Min Zhang, Sahel Ashhab, Ying Wu, Franco Nori

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Abstract

We investigate a hybrid electro-optomechanical system that allows us to realize controllable strong Kerr nonlinearities even in the weak-coupling regime. We show that when the controllable electromechanical subsystem is close to its quantum critical point, strong photon-photon interactions can be generated by adjusting the intensity (or frequency) of the microwave driving field. Nonlinear optical phenomena, such as the appearance of the photon blockade and the generation ofnonclassical states (e.g., Schrödinger cat states), are demonstrated in the weak-coupling regime, making the observation of strong Kerr nonlinearities feasible with currently available optomechanical technology.

Original languageEnglish
Article number2943
JournalScientific Reports
Volume3
DOIs
Publication statusPublished - 15 Oct 2013

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