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arXiv 0901.0811quant-ph
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量子存储器作为一个永恒的移动?稳定性与信息处理的可逆性

Quantum memory as a perpetuum mobile? Stability v.s. reversibility of information processing

Robert Alicki

摘要:

有人认为,使用Gedanken实验,一个可扩展的量子存储器可以被用作第二类的永久移动,因此不能在自然界中实现。推理是基于这样的假设,即朗道测量原理是热力学第二定律的结果,而不是一个独立的假设。这意味着修改的兰道尔的原则时,适用于歧视的平衡(亚稳)状态。虽然亚稳态的识别可以以无限低的成本完成,但是这种状态的改变涉及与其稳定因子成比例的能量耗散。

英文摘要:

It is argued using a Gedankenexperiment that a scalable quantum memory could be used as a perpetuum mobile of the second kind and hence cannot be realized in Nature. The reasoning is based on the assumption that the Landauer's principle for measurements is a consequence of the second law of thermodynamics and not an independent postulate. This implies a modification of the Landauer's principle when applied for discrimination of equilibrium (metastable) states. While identification of the metastable state can be done at the infinitesimally low cost, a change of such a state involves dissipation of energy proportional to its stability factor.

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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