arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2008.08168physics.optics
收藏

电磁散射的分层平均场$\mathbb{T}$算子界:近场辐射Purcell增强的上界

Hierarchical Mean-Field $\mathbb{T}$ Operator Bounds on Electromagnetic Scattering: Upper Bounds on Near-Field Radiative Purcell Enhancement

Sean Molesky, Pengning Chao, Alejandro W. Rodriguez

摘要:

我们展示了如何散射理论的中心平等,定义的$\mathbb{T}$运营商,可以用来生成层次的平均场约束,作为自然的补充,以优化一些目标的标准电磁设计问题的结构自由度。概念验证应用程序的问题,最大限度地提高了辐射Purcell增强的偶极电流源附近的结构化介质,许多传感和量子技术的核心效果,产生的性能界限,往往超过一个数量级更紧密的比所有当前的框架,突出了这些模型的不现实的存在下,不同的域和字段本地化长度尺度。与区域分解和多重网格方法密切相关,类似的构造在波动物理学的任何分支都是可能的,为系统评估电磁学之外的基本极限铺平了道路。

英文摘要:

We show how the central equality of scattering theory, the definition of the $\mathbb{T}$ operator, can be used to generate hierarchies of mean-field constraints that act as natural complements to the standard electromagnetic design problem of optimizing some objective with respect to structural degrees of freedom. Proof-of-concept application to the problem of maximizing radiative Purcell enhancement for a dipolar current source in the vicinity of a structured medium, an effect central to many sensing and quantum technologies, yields performance bounds that are frequently more than an order of magnitude tighter than all current frameworks, highlighting the irreality of these models in the presence of differing domain and field-localization length scales. Closely related to domain decomposition and multi-grid methods, similar constructions are possible in any branch of wave physics, paving the way for systematic evaluations of fundamental limits beyond electromagnetism.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑