Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany.
Phys Rev Lett. 2012 Mar 23;108(12):120602. doi: 10.1103/PhysRevLett.108.120602.
We introduce the idea of actually cooling quantum systems by means of incoherent thermal light, hence giving rise to a counterintuitive mechanism of "cooling by heating." In this effect, the mere incoherent occupation of a quantum mechanical mode serves as a trigger to enhance the coupling between other modes. This notion of effectively rendering states more coherent by driving with incoherent thermal quantum noise is applied here to the optomechanical setting, where this effect occurs most naturally. We discuss two ways of describing this situation, one of them making use of stochastic sampling of gaussian quantum states with respect to stationary classical stochastic processes. The potential of experimentally demonstrating this counterintuitive effect in optomechanical systems with present technology is sketched.
我们提出了通过非相干热光实际冷却量子系统的想法，从而产生了一种反直觉的“加热冷却”机制。在这种效应中，量子力学模式的非相干占据本身就充当了增强其他模式之间耦合的触发器。通过用非相干热量子噪声驱动来有效地使状态更加相干的这种概念被应用于这里的光机械设置中，在这种设置中，这种效应最自然地发生。我们讨论了两种描述这种情况的方法，其中一种方法利用了关于静态经典随机过程的高斯量子态的随机抽样。用目前的技术在光机械系统中实验演示这种反直觉效应的潜力被勾勒出来。
