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Laser cooling of a micromechanical membrane to the quantum backaction limit

zqyin 添加于 2015-10-15 09:54 | 1310 次阅读 | 0 个评论

作者
Peterson RW, Purdy TP, Kampel NS, Andrews RW, Yu P-L, Lehnert KW, Regal CA
摘要
The radiation pressure of light can act to damp and cool the vibrational motion of a mechanical resonator. In understanding the quantum limits of this cooling, one must consider the effect of shot noise fluctuations on the final thermal occupation. In optomechanical sideband cooling in a cavity, the finite Stokes Raman scattering defined by the cavity linewidth combined with shot noise fluctuations dictates a quantum backaction limit, analogous to the Doppler limit of atomic laser cooling. In our work we sideband cool to the quantum backaction limit by using a micromechanical membrane precooled in a dilution refrigerator. Monitoring the optical sidebands allows us to directly observe the mechanical object come to thermal equilibrium with the optical bath.
详细资料
- 关键词: quant-ph; physics.optics
- 文献种类: Manual Script
- 期卷页: 2015年
- 日期: 2015-10-14
- 发布方式: arXiv e-prints
- 备注:arXiv:1510.03911v1; 13 pages, 3 figures
学科领域自然科学 » 物理学
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