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arXiv 1704.04763quant-ph
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反动力Casimir效应作为工作提取的资源

Anti-Dynamical Casimir Effect as a Resource for Work Extraction

A. V. Dodonov, D. Valente, T. Werlang

备注：
11 pages, 3 figures
发表信息：
Phys. Rev. A 96, 012501 (2017)
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摘要：

我们考虑的量子拉比模型与外部时间调制的原子频率，它可以用来创建激发从真空状态的电磁场的动态Casimir效应的结果。通过适当地调节调制频率，也可以从原子-场系统中系统地减去激发，这就是所谓的反动力学卡西米尔效应（ADCE）。我们评估的量子力学工作，并表明，一个现实的平衡有限时间协议利用ADCE允许从系统中提取工作，其量可以大得多，然后调制幅度，$| W_{\mathrm{ADCE}}| \gg \hbar ε_Ω$，在非常慢的绝热调制的情况下。我们提供了在最先进的实验场景中控制工作提取的方法，其中精确的频率调整或完整的系统隔离可能难以实现。

英文摘要：

We consider the quantum Rabi model with external time modulation of the atomic frequency, which can be employed to create excitations from the vacuum state of the electromagnetic field as a consequence of the dynamical Casimir effect. Excitations can also be systematically subtracted from the atom-field system by suitably adjusting the modulation frequency, in the so-called anti-dynamical Casimir effect (ADCE). We evaluate the quantum thermodynamical work and show that a realistic out-of-equilibrium finite-time protocol harnessing ADCE allows for work extraction from the system, whose amount can be much bigger then the modulation amplitude, $| W_{\mathrm{ADCE}}| \gg \hbar ε_Ω$, in contrast to the case of very slow adiabatic modulations. We provide means to control work extraction in state-of-the-art experimental scenarios, where precise frequency adjustments or complete system isolation may be difficult to attain.

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