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arXiv 1503.03797quant-ph
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超辐射量子热机

Superradiant Quantum Heat Engine

Ali Ü. C. Hardal, Özgür E. Müstecaplıoglu

摘要:

量子物理学彻底改变了力学、统计物理学和电动力学等经典学科。然而,科学知识的一个分支似乎未被触及:热力学。热力学背后的主要动机是发展高效的热机。技术有一种趋势,使发动机小型化,达到量子制度。量子热机的发展需要量子热力学这一新兴领域的参与。对量子相干性的研究争论着量子相干性是否可以作为一种资源。我们探索一种替代方案,它可以作为一种有效的催化剂。我们提出了一种由光腔中的光子气体作为工作流体,量子相干原子团簇作为燃料的量子混合器。利用超辐射,其中一个集群可以辐射速度比单个原子的平方,我们表明,工作输出成为成正比的原子数的平方。除了提高QHE的实用价值外,我们的结果是量子燃料与经典燃料的根本区别。

英文摘要:

Quantum physics revolutionized classical disciplines of mechanics, statistical physics, and electrodynamics. One branch of scientific knowledge however seems untouched: thermodynamics. Major motivation behind thermodynamics is to develop efficient heat engines. Technology has a trend to miniaturize engines, reaching to quantum regimes. Development of quantum heat engines (QHEs) requires emerging field of quantum thermodynamics. Studies of QHEs debate whether quantum coherence can be used as a resource. We explore an alternative where it can function as an effective catalyst. We propose a QHE which consists of a photon gas inside an optical cavity as the working fluid and quantum coherent atomic clusters as the fuel. Utilizing the superradiance, where a cluster can radiate quadratically faster than a single atom, we show that the work output becomes proportional to the square of the number of the atoms. In addition to practical value of cranking up QHE, our result is a fundamental difference of a quantum fuel from its classical counterpart.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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