论文标题
与库仑耦合的双量子点系统的非平衡自由能和信息流
Nonequilibrium free energy and information flow of a double quantum-dot system with Coulomb coupling
论文作者
论文摘要
我们建立了一个具有库仑耦合的双量子点系统，并旨在研究熵产生，自由能和信息流之间的连接。通过利用随机热力学和图理论分析中的概念，构建了Clausius和非平衡自由能不等式，以解释子系统热力学的局部第二定律。通过使用Schnakenberg的网络理论，确定了一组基本的循环通量和亲和力来分解这两种不平等。结果表明，热力学不可逆性具有与能量相关的和信息相关的贡献。与反馈引起的信息流相关的全局循环将泵送电子与偏置电压的电压，该电压实现了麦克斯韦恶魔。
We build a double quantum-dot system with Coulomb coupling and aim at studying the connections among the entropy production, free energy, and information flow. By utilizing the concepts in stochastic thermodynamics and graph theory analysis, the Clausius and nonequilibrium free energy inequalities are built to interpret the local second law of thermodynamics for subsystems. A fundamental set of cycle fluxes and affinities is identified to decompose the two inequalities by using Schnakenberg's network theory. The results show that the thermodynamic irreversibility has the energy-related and information-related contributions. A global cycle associated with the feedback-induced information flow would pump electrons against the bias voltage, which implements a Maxwell Demon.
