开放量子系统的量子热力学：热涨落的性质

IF 2.2 3区物理与天体物理 Q1 PHYSICS, MATHEMATICAL

Quantum Information Processing Pub Date : 2025-08-28 DOI:10.1007/s11128-025-04903-6

Neha Pathania, Devvrat Tiwari, Subhashish Banerjee

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引用次数: 0

摘要

我们通过平均力的哈密顿量研究了开放量子系统的热力学行为，重点研究了两个模型：与热浴相互作用的双量子比特系统和没有旋转波近似的Jaynes-Cummings模型。通过分析弱耦合和强耦合机制，我们揭示了环境相互作用对量子热力学量的影响，包括比热容、内能和熵。进一步，计算了自恋性和熵的产生。我们还探讨了能量-温度的不确定性关系，它设定了信噪比的上界。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Quantum thermodynamics of open quantum systems: nature of thermal fluctuations

We investigate the thermodynamic behavior of open quantum systems through the Hamiltonian of mean force, focusing on two models: a two-qubit system interacting with a thermal bath and a Jaynes–Cummings model without the rotating wave approximation. By analyzing both weak and strong coupling regimes, we uncover the impact of environmental interactions on quantum thermodynamic quantities, including specific heat capacity, internal energy, and entropy. Further, the ergotropy and entropy production are computed. We also explore the energy–temperature uncertainty relation, which sets an upper bound on the signal-to-noise ratio.

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来源期刊

Quantum Information Processing 物理-物理：数学物理

CiteScore

4.10

自引率

20.00%

发文量

337

审稿时长

4.5 months

期刊介绍： Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.