Ground-state cooling of multiple near-degenerate mechanical modes
- URL: http://arxiv.org/abs/2110.14893v1
- Date: Thu, 28 Oct 2021 05:16:34 GMT
- Title: Ground-state cooling of multiple near-degenerate mechanical modes
- Authors: Jin-Yu Liu, Wenjing Liu, Da Xu, Jia-Chen Shi, Qihuang Gong, Yun-Feng
Xiao
- Abstract summary: We propose a general and experimentally feasible approach to realize simultaneous ground-state cooling of arbitrary number of near-degenerate mechanical modes.
Multiple optical modes are employed to provide different dissipation channels that prevent complete destructive interference of the cooling pathway.
In a realistic multi-mode optomechanical system, ground-state cooling of all mechanical modes is demonstrated by sequentially introducing optical drives.
- Score: 11.869624318120842
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- 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.
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