Cooling of a nanomechanical resonator in a hybrid optomechanical system: Effect of parametric interactions

In this paper we propose a hybrid electro-optomechanical system consisting of capacitively coupled optical and microwave cavities. An optical parametric amplifier (OPA) is mounted inside the optical cavity. The capacitor of the microwave cavity is formed of two mechanical resonators, which are under the effect of a DC bias voltage. We will show that changing the DC voltage affects on the output spectra of the system at different frequencies. Also, we show that changing the gain coefficient of OPA results in obtaining different responses by the system.

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Ground-State Cooling and High-Fidelity Quantum Transduction via Parametrically Driven Bad-Cavity Optomechanics

Lau

Clerk

2020

Phys. Rev. Lett.

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Optomechanical couplings involve both beam-splitter and two-mode-squeezing types of interactions. While the former underlies the utility of many applications, the latter creates unwanted excitations and is usually detrimental. In this work, we propose a simple but powerful method based on cavity parametric driving to suppress the unwanted excitation that does not require working with a deeply sideband-resolved cavity. Our approach is based on a simple observation: as both the optomechanical two-mode-squeezing interaction and the cavity parametric drive induce squeezing transformations of the relevant photonic bath modes, they can be made to cancel one another. We illustrate how our method can cool a mechanical oscillator below the quantum back-action limit, and significantly suppress the output noise of a sideband-unresolved optomechanical transducer.

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Cooling of a nanomechanical resonator in a hybrid optomechanical system: Effect of parametric interactions

Cited by 4 publications

References 24 publications

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Output spectra of a hybrid electro-optomechanical system: Effect of a DC voltage

Ground-State Cooling and High-Fidelity Quantum Transduction via Parametrically Driven Bad-Cavity Optomechanics

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