An autonomous out-of-equilibrium Maxwell's demon is used to reverse the natural direction of the heat flux between two electric circuits kept at different temperatures and coupled by the electric thermal noise. The demon does not process any information, but it achieves its goal by using a frequency-dependent coupling with the two reservoirs of the system. There is no mean energy flux between the demon and the system, but the total entropy production $(\mathrm{system}+\mathrm{demon})$ is positive. The demon can be power supplied by thermocouples. The system and the demon are ruled by equations similar to those of two coupled Brownian particles and of the Brownian gyrator. Thus our results pave the way to the application of autonomous out-of-equilibrium Maxwell's demons to coupled nanosystems at different temperatures.

中文翻译：

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自主失衡的麦克斯韦恶魔，用于控制由热波动产生的能量通量

自主失衡的麦克斯韦恶魔被用来反转保持在不同温度并通过电热噪声耦合的两个电路之间的热通量的自然方向。恶魔不处理任何信息，但是它通过与系统的两个容器进行频率相关的耦合来实现其目标。恶魔与系统之间没有平均能量通量，但是总熵产生$（\mathrm{系统}+\mathrm{恶魔}）$是积极的。恶魔可以由热电偶供电。该系统和恶魔由类似于两个耦合的布朗粒子和布朗旋转器的方程所控制。因此，我们的结果为在不同温度下将自主失衡的麦克斯韦恶魔应用到耦合纳米系统上铺平了道路。