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首页> 外文期刊>Physical Review, A >Optomechanical oscillator controlled by variation in its heat bath temperature
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Optomechanical oscillator controlled by variation in its heat bath temperature

机译：通过其热浴温变化控制的光机械振荡器

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We propose a generation of a low-noise state of optomechanical oscillator by a temperature-dependent force. We analyze the situation in which a quantum optomechanical oscillator (denoted as themembrane) is driven by an external force (produced by the piston). Both systems are embedded in a common heat bath at certain temperature T . The driving force the piston exerts on the membrane is bath temperature dependent. Initially, for T = T0, the piston is linearly coupled to the membrane. The bath temperature is then reversibly changed to T ≠ T0. The change of temperature shifts the membrane, but simultaneously also increases its fluctuations. The resulting equilibrium state of the membrane is analyzed from the point of view of mechanical, as well as of thermodynamic, characteristics. We compare these characteristics of membrane and derive their intimate connection. Next, we cool down the thermal noise of the membrane, bringing it out of equilibrium, still being in the contact with heat bath. This cooling retains the effective canonical Gibbs state with the effective temperature T~*. In such case we study the analogs of the equilibrium quantities for low-noise mechanical states of the membrane.
机译：我们提出了通过依赖的力产生光学力学振荡器的低噪声状态。我们分析了量子光学机械振荡器（表示为突出）的情况​​，由外力（由活塞产生）驱动。两个系统都嵌入在一定温度T的公共热浴中。活塞在膜上施加活塞是浴温依赖性的。最初，对于T = T0，活塞线性地耦合到膜。然后将浴温可逆地改变为T∈T0。温度的变化使膜变为膜，但同时也增加了其波动。从机械的角度以及热力学，特征的角度分析所得到的膜的平衡状态。我们比较这些膜的这些特征并导出了他们的亲密关系。接下来，我们冷却膜的热噪声，使其超出平衡，仍处于与热浴的接触。该冷却保留了具有有效温度T〜*的有效规范的GIBBS状态。在这种情况下，我们研究了膜的低噪声机械状态的平衡量的类似物。

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