T -operator limits on optical communication: Metaoptics, computation, and input-output transformations
T -operator limits on optical communication: Metaoptics, computation, and input-output transformations
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DOI：
10.1103/physrevresearch.4.013020
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发表时间：
2021-02
影响因子：
4.2
通讯作者：
S. Molesky;Pengning Chao;Jewel Mohajan;Wesley F. Reinhart;Heng Chi;Alejandro W. Rodriguez
中科院分区：
文献类型：
--
作者：
S. Molesky;Pengning Chao;Jewel Mohajan;Wesley F. Reinhart;Heng Chi;Alejandro W. Rodriguez
提出了一种基于拉格朗日对偶性和电磁散射算子的优化框架，对来自一组输入场的输出场的可能特征进行了限制，即对可实现的光学变换和作为通信信道的结构化材料的特性进行了限制。这些界限对具有多波长或多端口功能的典型光学设备的性能的影响在电磁屏蔽、聚焦、近场分辨率和线性计算的背景下被检验。
We present an optimization framework based on Lagrange duality and the scattering $\mathbb{T}$ operator of electromagnetism to construct limits on the possible features that may be imparted to a collection of output fields from a collection of input fields, i.e., constraints on achievable optical transformations and the characteristics of structured materials as communication channels. Implications of these bounds on the performance of representative optical devices having multi-wavelength or multiport functionalities are examined in the context of electromagnetic shielding, focusing, near-field resolution, and linear computing.