Time-cost-error trade-off relation in thermodynamics: The third law and beyond

• URL: http://arxiv.org/abs/2408.04576v3
• Date: Tue, 03 Jun 2025 05:38:18 GMT
• Title: Time-cost-error trade-off relation in thermodynamics: The third law and beyond
• Authors: Tan Van Vu, Keiji Saito,
• Abstract summary: In the context of cooling, the unattainability principle of the third law of thermodynamics asserts that infinite resources'' are needed to reach absolute zero.<n>We introduce the concept of it separated states', which consist of fully unoccupied and occupied states, and formulate the corresponding thermokinetic cost and error.<n>We extend these findings to the quantum regime, encompassing both Markovian and non-Markovian dynamics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Elucidating fundamental limitations inherent in physical systems is a central subject in physics. For important thermodynamic operations such as information erasure, cooling, and copying, resources like time and energetic cost must be expended to achieve the desired outcome within a predetermined error margin. In the context of cooling, the unattainability principle of the third law of thermodynamics asserts that infinite ``resources'' are needed to reach absolute zero. However, the precise identification of relevant resources and how they jointly constrain achievable error remains unclear within the framework of stochastic and quantum thermodynamics. In this work, we introduce the concept of {\it separated states}, which consist of fully unoccupied and occupied states, and formulate the corresponding thermokinetic cost and error, thereby establishing a unifying framework for a broad class of thermodynamic operations. We then uncover a three-way trade-off relation between {\it time}, {\it cost}, and {\it error} for thermodynamic operations aimed at creating separated states, simply expressed as $\tau{C}\varepsilon_{\tau}\ge 1-\eta$. This fundamental relation is applicable to diverse thermodynamic operations, including information erasure, cooling, and copying. It provides a profound quantification of the unattainability principle in the third law of thermodynamics in a general form. Building upon this relation, we explore the quantitative limitations governing cooling operations, the preparation of separated states, and a no-go theorem for exact classical copying. Furthermore, we extend these findings to the quantum regime, encompassing both Markovian and non-Markovian dynamics.

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