新科学想法 › 文献管理 › 浏览文献

Optomechanical sideband cooling of a micromechanical oscillator close to the quantum ground state

myco 添加于 2010-11-3 00:35 | 1709 次阅读 | 0 个评论

作者
Riviere R, Deleglise S, Weis S, Gavartin E, Arcizet O, Schliesser A, Kippenberg TJ
摘要
Cooling a mesoscopic mechanical oscillator to its quantum ground state is elementary for the preparation and control of low entropy quantum states of large scale objects. Here, we pre-cool a 70-MHz micromechanical silica oscillator to an occupancy below 200 quanta by thermalizing it with a 600-mK cold 3He gas. Two-level system induced damping via structural defect states is shown to be strongly reduced, and simultaneously serves as novel thermometry method to independently quantify excess heating due to the cooling laser. We demonstrate that dynamical backaction sideband cooling can reduce the average occupancy to 9+-1 quanta, implying that the mechanical oscillator can be found (10+- 1)% of the time in its quantum ground state.
详细资料
- 关键词: quant-ph
- 文献种类:期刊
- 备注:arXiv:1011.0290v1; 11 pages, 5 figures
标签

Optomechanics sideband cooling
相关链接 URL