Ground-state cooling based on a three-cavity optomechanical system in the unresolved-sideband regime

doi:10.1088/1674-1056/abc159

Abstract In the unresolved sideband regime, we propose a scheme for cooling mechanical resonator close to its ground state in a three-cavity optomechanical system, where the auxiliary cavities are indirectly connected with the mechanical resonator through standard optomechanical subsystem. The standard optomechanical subsystem is driven by a strong pump laser field. With the help of the auxiliary cavities, the heating process is suppressed and the cooling process of the mechanical resonator is enhanced. More importantly, the average phonon number is much less than 1 in a larger range. This means that the mechanical resonator can be cooled down to its ground state. All these interesting features will significantly promote the physical realization of quantum effects in multi-cavity optomechanical systems.

Keywords: ground-state cooling three-cavity optomechanical system unresolved sideband regime

Received: 19 August 2020
Revised: 08 September 2020
Accepted manuscript online: 15 October 2020

PACS:	42.50.Pq	(Cavity quantum electrodynamics; micromasers)
	42.50.Nn	(Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems)
	42.50.Ct	(Quantum description of interaction of light and matter; related experiments)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)

Fund: Project supported by the Research Fund of Tonghua Normal University (Grant No. 202017ND).

Corresponding Authors: ^†Corresponding author. E-mail: pwl1207wj@163.com

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Jing Wang(王婧) Ground-state cooling based on a three-cavity optomechanical system in the unresolved-sideband regime 2021 Chin. Phys. B 30 024204

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Ground-state cooling based on a three-cavity optomechanical system in the unresolved-sideband regime

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