Ground-state cooling of multiple near-degenerate mechanical modes

Abstract

We propose a general and experimentally feasible approach to realize simultaneous ground-state cooling of arbitrary number of near-degenerate, or even fully degenerate mechanical modes, overcoming the limit imposed by the formation of mechanical dark modes. Multiple optical modes are employed to provide different dissipation channels that prevent complete destructive interference of the cooling pathway, and thus eliminating the dark modes. The cooling rate and limit are explicitly specified, in which the distinguishability of the optical modes to the mechanical modes is found to be critical for an efficient cooling process. In a realistic multi-mode optomechanical system, ground-state cooling of all mechanical modes is demonstrated by sequentially introducing optical drives, proving the feasibility and scalability of the proposed scheme. The work may provide new insights in preparing and manipulating multiple quantum states in macroscopic systems.

References in corpus (12)

• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
• Theory of ground state cooling of a mechanical oscillator using dynamical back-action
• Dispersive optomechanics: a membrane inside a cavity
• Multimode circuit optomechanics near the quantum limit
• Optomechanical sideband cooling of a micromechanical oscillator close to the quantum ground state
• Continuous mode cooling and phonon routers for phononic quantum networks
• Nonreciprocal ground-state cooling of multiple mechanical resonators
• Simultaneous cooling and entanglement of mechanical modes of a micromirror in an optical cavity
• Quantum back-action evading measurement of collective mechanical modes
• Approaching the motional ground state of a 10 kg object
• Ultrasensitive nano-optomechanical force sensor at dilution temperatures

Cited by in corpus (6)

• Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle
• Multimode optomechanical cooling via general dark-mode control
• Thermal-noise-resistant optomechanical entanglement via general dark-mode control
• Millionfold improvement in multivibration-feedback optomechanical refrigeration via auxiliary mechanical coupling
• Simultaneous ground-state cooling of multiple degenerate mechanical modes through cross-Kerr effect
• Optomechanical compensatory cooling mechanism with exceptional points