Simultaneous cooling of degenerate mechanical modes in unresolved sideband regime via optical and mechanical nonlinearities
arXiv:2604.16831 · doi:10.1103/PhysRevA.109.033509
Abstract
We propose a scheme to simultaneously cool multiple degenerate mechanical modes in optomechanical systems beyond the resolved sideband regime. In general, one of the main obstacles for cooling degenerate mechanical modes is the so-called dark-mode effect. The Duffing nonlinearities (mechanical nonlinearities) can be used to overcome the dark-mode effect of degenerate mechanical modes. A second-order nonlinear medium (optical nonlinearity) is introduced to accomplish the ground-state cooling of degenerate mechanical modes beyond the resolved sideband regime. We find the dark mode of degenerate mechanical modes can be broken when the mechanical nonlinearities of different mechanical modes are not very close. Our scheme paves the way toward the implementation of simultaneous ground-state cooling of degenerate mechanical modes of optomechanical systems beyond the resolved sideband regime in experiments.
10 pages, 7 figures
References in corpus (11)
- Squeezed Optomechanics with Phase-matched Amplification and Dissipation
- Multimode circuit optomechanics near the quantum limit
- Steady-state Mechanical Squeezing in an Optomechanical System via Duffing Nonlinearity
- Nonreciprocal ground-state cooling of multiple mechanical resonators
- Multiple membrane cavity optomechanics
- Simultaneous cooling and entanglement of mechanical modes of a micromirror in an optical cavity
- Intracavity-squeezed optomechanical cooling
- Multimode optomechanical cooling via general dark-mode control
- Controlling Multimode Optomechanical Interactions via Interference
- Thermal-noise-resistant optomechanical entanglement via general dark-mode control
- Large mechanical squeezing beyond 3dB of hybrid atom-optomechanical systems in highly unresolved sideband regime