利用光机械诱导透明对未分辨边带区机械运动的基态冷却
Ground state cooling of mechanical motion in the unresolved sideband regime by use of optomechanically induced transparency
摘要：
本文提出了一种将光机系统中的机械运动冷却到基态的方案。与标准边带冷却不同，该方案适用于所谓的未解析边带区域，其中机械模式的谐振频率远小于腔线宽。当假设存在附加的辅助机械模式并利用光机械诱导透明的效果时，基态冷却成为可能。我们首先考虑一个系统，其中一个光学腔与两个机械模式相互作用，并表明，基态冷却的未解决的机械模式时，辅助模式是在解决边带制度是可能的。然后，我们提出了一个修改后的设置涉及两个腔模式，其中两个机械模式被允许在未解决的边带制度。
英文摘要：
We present a scheme for cooling mechanical motion to the ground state in an optomechanical system. Unlike standard sideband cooling, this scheme applies to the so-called unresolved sideband regime, where the resonance frequency of the mechanical mode is much smaller than the cavity linewidth. Ground state cooling becomes possible when assuming the presence of an additional, auxiliary mechanical mode and exploiting the effect of optomechanically induced transparency. We first consider a system where one optical cavity interacts with two mechanical modes, and show that ground state cooling of the unresolved mechanical mode is possible when the auxiliary mode is in the resolved sideband regime. We then present a modified setup involving two cavity modes, where both mechanical modes are allowed to be in the unresolved sideband regime.
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