Efficiency bounds for bipartite information-thermodynamic systems.

Xia, Shihao; Han, Shuanglong; Pan, Ousi; Pan, Yuzhuo; Chen, Jincan; Su, Shanhe · Phys Rev E · 2024

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Abstract

In this paper, we introduce an approach to derive a lower bound for the entropy production rate of a subsystem by utilizing the Cauchy-Schwarz inequality. It extends to establishing comprehensive upper and lower bounds for the efficiency of two subsystems. These bounds are applicable to a wide range of Markovian stochastic processes, which enhances the accuracy in depicting the range of energy conversion efficiency between subsystems. Empirical validation is conducted using a two-quantum-dot system model, which serves to confirm the effectiveness of our inequality in refining the boundaries of efficiency.