相干态叠加驱动的玻色子量子电池中的功率分辨功提取与关联再分布
Power-resolved ergotropy and correlation redistribution in a bosonic quantum battery driven by a coherent-state superposition
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- Brazilian Center for Physics Research（巴西物理研究中心）
- Federal University of Rio Grande do Norte（北里奥格兰德联邦大学）
- International Institute of Physics, Federal University of Rio Grande do Norte（北里奥格兰德联邦大学国际物理研究所）
- Federal University of Paraná（巴拉那联邦大学）
- State University of Santa Cruz（圣克鲁斯州立大学）
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中文总结 AI 辅助
该研究建立了相干态叠加驱动的玻色子量子电池中可提取功与纠缠的直接联系，揭示了功损失由充电器-电池纠缠决定，并展示了多体关联的再分布及全局与局部功提取的区别。
中文摘要 AI 辅助
功提取间隙关系提供了量子关联的热力学见证，但在多体非高斯玻色子系统中，可提取功与纠缠之间的直接动力学联系在很大程度上仍未得到探索。在此，我们为相干态叠加驱动的玻色子量子电池建立了这种联系。尽管希尔伯特空间是无限维的，但动力学保留了简单的结构，使得相关功和关联度量能够精确获得。我们证明，与电池能量的被动部分相关的可提取功的损失直接由充电器-电池纠缠决定。这一关系还将充电功率分解为能量转移的贡献和电池能谱变化的贡献。同时，多体关联从涉及充电器的关联逐渐再分布到电池内部的关联。对于对称共振协议，完全能量转移与充电器-电池解纠缠和完全可提取的存储能量同时发生，而电池内的多体关联达到最大。然而，单个单元仍然保持混合态，揭示了全局和局部功提取之间的区别。我们进一步表明，在所考虑的机制中，局部可提取功完全由能量相干性支持。在单光子损耗下，解析结构得以保留，但环境关联将充电器解纠缠与最大功提取分离开来。
英文摘要
Ergotropic-gap relations provide thermodynamic witnesses of quantum correlations, but a direct dynamical connection between extractable work and entanglement remains largely unexplored in multipartite non-Gaussian bosonic systems. Here, we establish such a connection for a bosonic quantum battery driven by a coherent-state superposition. Despite the infinite-dimensional Hilbert space, the dynamics retains a simple structure that allows the relevant work and correlation measures to be obtained exactly. We show that the loss of extractable work associated with the passive part of the battery energy is directly determined by charger-battery entanglement. This relation also separates the charging power into contributions from energy transfer and from changes in the battery spectrum. At the same time, multipartite correlations are progressively redistributed from charger-involving correlations to correlations internal to the battery. For a symmetric resonant protocol, complete energy transfer coincides with charger-battery disentanglement and fully extractable stored energy, while multipartite correlations within the battery are maximal. Individual cells, however, remain mixed, revealing a distinction between global and local work extraction. We further show that, in the regime considered, locally extractable work is entirely supported by energetic coherence. Under single-photon loss, the analytical structure survives, but environmental correlations separate charger disentanglement from maximal work extraction.
