A Programmable Mechanical Maxwell’s Demon
A Programmable Mechanical Maxwell’s Demon
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可编程机械麦克斯韦妖
作者：
Zhiyue Lu;C. Jarzynski
我们介绍并研究了麦克斯韦恶魔的一个简单而明确的机械模型--一个与记忆寄存器(比特流)、热储(理想气体)和工作储藏(可以升降的质量)相互作用的设备。我们的设备类似于我们在其他地方简要描述的设备，但它有一个额外的特征，即它可以被编程来识别选定的参考序列，例如，π的二进制表示。如果存储寄存器中的位与参考序列中的位匹配，则该设备从热储中提取热量并将其转换为功，以提升一小块质量。相反，该设备可以作为通用的朗道橡皮擦(或复印机)运行，利用下落质量的能量将选定的参考序列写入存储寄存器，取代以前可能存储在那里的任何信息。我们的模型既可以被解释为一台自动执行信息和能量之间转换的机器，也可以被解释为由外部代理操作的反馈控制设备。我们推导出这两种情况下的广义热力学第二定律。我们用数值模拟和分析计算说明我们的模型在一个特定的，精确可解的极限。
We introduce and investigate a simple and explicitly mechanical model of Maxwell’s demon—a device that interacts with a memory register (a stream of bits), a thermal reservoir (an ideal gas) and a work reservoir (a mass that can be lifted or lowered). Our device is similar to one that we have briefly described elsewhere, but it has the additional feature that it can be programmed to recognize a chosen reference sequence, for instance, the binary representation of π. If the bits in the memory register match those of the reference sequence, then the device extracts heat from the thermal reservoir and converts it into work to lift a small mass. Conversely, the device can operate as a generalized Landauer’s eraser (or copier), harnessing the energy of a dropping mass to write the chosen reference sequence onto the memory register, replacing whatever information may previously have been stored there. Our model can be interpreted either as a machine that autonomously performs a conversion between information and energy, or else as a feedback-controlled device that is operated by an external agent. We derive generalized second laws of thermodynamics for both pictures. We illustrate our model with numerical simulations, as well as analytical calculations in a particular, exactly solvable limit.
实施麦克斯韦妖的物理模型的热力学
影响因子：
8.6
作者：
P. Strasberg;G. Schaller;T. Brandes;M. Esposito
通讯作者：
M. Esposito
影响因子：
64.8
作者：
Berut, Antoine;Arakelyan, Artak;Lutz, Eric
通讯作者：
Lutz, Eric
DOI：
10.1073/pnas.1704827114
发表时间：
2017-07-18
影响因子：
11.1
作者：
Cottet, Nathanael;Jezouin, Sebastien;Huard, Benjamin
通讯作者：
Huard, Benjamin