Energy concentration in composite quantum systems
Energy concentration in composite quantum systems
复制标题
复合量子系统中的能量集中
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
G. Vitiello
中科院分区：
文献类型：
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作者：
A. Kurcz;A. Capolupo;Almut Beige;E. Giudice;G. Vitiello
在量子光学的框架下，人们已经广泛地研究了光腔和囚禁原子中的光子自发辐射。基于旋波近似(RWA)的理论预测总体上与实验结果非常吻合。然而，目前的实验目标是将越来越好的空穴与大量紧密受限的原子结合起来。在这里，我们预测了这种复合量子系统的行为中的一种能量集中机制，这是RWA所不能描述的。其结果是，即使在没有外部驱动的情况下，光子也会通过腔镜持续泄漏。最后，我们从热力学的角度对预测的现象进行了讨论。
The spontaneous emission of photons from optical cavities and from trapped atoms has been studied extensively in the framework of quantum optics. Theoretical predictions based on the rotating wave approximation (RWA) are, in general, in very good agreement with experimental findings. However, current experiments aim at combining better and better cavities with large numbers of tightly confined atoms. Here we predict an energy concentrating mechanism in the behavior of such a composite quantum system which cannot be described by the RWA. Its result is the continuous leakage of photons through the cavity mirrors, even in the absence of external driving. We conclude with a discussion of the predicted phenomenon in the context of thermodynamics.