量子电池中量子失协的作用
The Role of Quantum Discord in Quantum Battery
DOI: 10.12677/MP.2021.116015, PDF,   
作者: 秦向瑜, 徐鸿嘉, 刘晓萌, 杜燕姣, 闫学群*：天津工业大学物理科学与技术学院，天津
关键词: 量子电池；量子失协；功的提取；Quantum Battery； Quantum Discord； Work Extraction
摘要: 在本文中，我们用一个两量子比特系统模拟了量子电池–充电器模型，通过精确求解两个全同二能级原子共处于一个单模腔场系统中，讨论了在不同平均光子数下量子失协对量子电池中能量转换和最大功的影响。研究表明：量子失协提供了量子电池系统中低能量向高能量传输的动力，并且最大功会随着光子数的增加而变化。当光子数较小时，系统内的演化受量子失协影响较大，随着光子数的增加，光子数在演化中所占权重越来越大，导致系统的演化更加复杂。
Abstract: In this paper, we use a two-qubit system to simulate the quantum battery charger model. By accu-rately solving that two identical two-level atoms are in a single-mode cavity field system, the effects of quantum discord on energy conversion and ergotropy in the quantum battery under different average photon numbers are discussed. The results show that the quantum discord provides the power for the transmission of low energy to high energy in the quantum battery system, and the ergotropy will change with the increase of the number of photons. When the number of photons is small, the evolution of the system is greatly affected by quantum discord. With the increase of the number of photons, the weight of the number of photons in the evolution becomes larger and larger, resulting in a more complex evolution of the system.
文章引用：秦向瑜, 徐鸿嘉, 刘晓萌, 杜燕姣, 闫学群. 量子电池中量子失协的作用[J]. 现代物理, 2021, 11(6): 119-125. https://doi.org/10.12677/MP.2021.116015

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