Cooling by heating: very hot thermal light can significantly cool quantum systems.
Cooling by heating: very hot thermal light can significantly cool quantum systems.
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DOI：
10.1103/physrevlett.108.120602
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发表时间：
2011-04
影响因子：
8.6
通讯作者：
Andrea Mari;J. Eisert
中科院分区：
文献类型：
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作者：
Andrea Mari;J. Eisert
我们引入了通过非相干热光来实际冷却量子系统的想法，从而产生了一种违反直觉的“通过加热来冷却”的机制。在这种效应中，量子力学模式的非相干占据就可以作为增强其他模式之间耦合的触发器。通过使用非相干热量子噪声驱动来有效地使状态更加相干的概念在这里应用于光机械设置，这种效应在光机械设置中最自然地发生。我们讨论描述这种情况的两种方法，其中一种利用相对于稳态经典随机过程的高斯量子态的随机采样。概述了利用现有技术在光机械系统中通过实验证明这种反直觉效应的潜力。
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.