Dynamic Cooling of a Micromechanical Membrane in a Double-cavity Optomechanical System

Mu, Qing-Xia; Lang, Chao; Lin, Peiying

doi:10.1007/s10773-019-04339-6

Cited by 2 publications

(1 citation statement)

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“…We consider a double-cavity optomechanical system to study the cooling of the mechanical resonator to its ground-state, which is formed by a mechanical mode and two single-cavity modes, as illustrated in figure 1, motivated by [57,58]. Here, the mechanical resonator (with frequency w m and decay rate g m ) Figure 1.…”

Section: Theoretical Model and System Dynamicsmentioning

confidence: 99%

Suppression of Stokes heating processes and improved optomechanical cooling with frequency modulation

Bao¹,

Liao²,

Zhao³

et al. 2022

Commun. Theor. Phys.

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Ground-state cooling of mesoscopic mechanical objects is still a major challenge in the unresolved sideband regime. We present a frequency modulation (FM) scheme to achieve mechanical resonator cooling to its ground-state in a double-cavity optomechanical system containing a mechanical resonator. The mean phonon number is determined by numerically solving a set of differential equations derived from the quantum master equations. Due to efficient suppression of Stokes heating processes in the presence of FM, the ground-state cooling indicated by numerical calculations is achievable considerably no matter whether in the resolved sideband regime or the unresolved sideband regime. Furthermore, by choosing parameters reasonably, the improvement of the quantum cooling limit is found to be capable of being positively correlated with the modulation frequency. This method provides new insight into quantum manipulation and creates more possibilities for applications of quantum devices.

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Section: Theoretical Model and System Dynamicsmentioning

confidence: 99%