Mechanical cooling in the bistable regime of a dissipative
optomechanical cavity with a Kerr medium
- URL: http://arxiv.org/abs/2304.13399v2
- Date: Sat, 22 Jul 2023 09:14:37 GMT
- Title: Mechanical cooling in the bistable regime of a dissipative
optomechanical cavity with a Kerr medium
- Authors: Ye Liu, Yang Liu, Chang-Sheng Hu, Yun-Kun Jiang, Huaizhi Wu, and Yong
Li
- Abstract summary: We study static bistability and mechanical cooling of a dissipative optomechanical cavity filled with a Kerr medium.
The system exhibits optical bistability for a wide input-power range with the power threshold being greatly reduced.
- Score: 10.197787268629543
- License: http://creativecommons.org/publicdomain/zero/1.0/
- Abstract: In this paper, we study static bistability and mechanical cooling of a
dissipative optomechanical cavity filled with a Kerr medium. The system
exhibits optical bistability for a wide input-power range with the power
threshold being greatly reduced, in contrast to the case of purely dissipative
coupling. At the bistable regime, the membrane can be effectively cooled down
to a few millikelvin from the room temperature under the unresolved sideband
condition, where the effective mechanical temperature is a nonmonotonic
function of intracavity intensity and reaches its minimum near the turning
point of the upper stable branch. When the system is in the cryogenics
environment, the effective mechanical temperature at the bistable regime shows
a similar feature as in the room temperature case, but the optimal cooling
appears at the monostable regime and approaches the mechanical ground state.
Our results are of interest for further understanding bistable optomechanical
systems, which have many applications in nonclassical state preparations and
quantum information processing.
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