AI 中文总结
研究受限于能量密度和保留时间的量子电池，提出基于$^{57}$Fe核集体激发的核量子电池，利用格林函数波导-QED描述及波形工程协议，实现超线性充电，能量密度约为$n \sqrt{n}$，为高能量密度量子充电提供途径。
AI 中文摘要
当前量子电池的实现受到与电子或分子激发相关的有限能量密度和短保留时间的限制。本文提出一种基于嵌入平面硬X射线波导中密度为n的$^{57}$Fe核集体激发的核量子电池。利用格林函数波导-QED描述，研究了超线性响应激发充电，其中饱和和驱动反作用重塑入射脉冲。引入自洽波形工程协议抑制波导中的局部辐射衰变，促进吸收到高能集体核激发流形中。展示了核系综增强的激发截面，产生超线性充电，最大研究能量密度约与$n \sqrt{n}$成比例。结果为利用当代X射线源和波导架构在硬X射线能量下进行高能量密度量子充电提供了途径，确定非线性集体增强吸收是核量子电池运行的关键机制。
英文摘要
Current implementations of quantum batteries are constrained by limited energy density and short retention times associated with the electronic or molecular excitations. Here we propose a nuclear quantum battery based on collective excitation of the $^{57}$Fe nuclei of density $n$ embedded in a planar hard X-ray waveguide. Using a Green function waveguide-QED description, we study charging via excitation beyond linear response, where saturation and drive back-action reshape the incident pulse. We introduce a self-consistent waveform-engineering protocol that inhibits local radiative decay in the waveguide thus promoting absorption into high-lying collective nuclear excitation manifolds. We show an enhanced excitation cross section of the nuclear ensemble which yields superlinear charging, with maximum studied energy density scaling approximately like $n \sqrt{n}$. Our results provide a route to high-energy-density quantum charging at hard X-ray energies using contemporary X-ray sources and waveguide architectures by identifying nonlinear, collectively enhanced absorption as a key mechanism for nuclear quantum battery operation.
Comments10 pages, 4 figures; Comments Welcome!
