Camacho Miguel, Edwards Brian, Engheta Nader
Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA.
Nat Commun. 2021 Mar 5;12(1):1466. doi: 10.1038/s41467-021-21664-9.
In the search for improved computational capabilities, conventional microelectronic computers are facing various problems arising from the miniaturization and concentration of active electronics. Therefore, researchers have explored wave systems, such as photonic or quantum devices, for solving mathematical problems at higher speeds and larger capacities. However, previous devices have not fully exploited the linearity of the wave equation, which as we show here, allows for the simultaneous parallel solution of several independent mathematical problems within the same device. Here we demonstrate that a transmissive cavity filled with a judiciously tailored dielectric distribution and embedded in a multi-frequency feedback loop can calculate the solutions of a number of mathematical problems simultaneously. We design, build, and test a computing structure at microwave frequencies that solves two independent integral equations with any two arbitrary inputs and also provide numerical results for the calculation of the inverse of four 5 x 5 matrices.
在寻求提升计算能力的过程中，传统的微电子计算机正面临着有源电子器件小型化和密集化所引发的各种问题。因此，研究人员探索了诸如光子或量子器件等波动系统，以期以更高的速度和更大的容量解决数学问题。然而，先前的器件尚未充分利用波动方程的线性特性，正如我们在此所展示的，这一特性允许在同一器件内同时并行求解多个独立的数学问题。在此，我们证明，一个填充有精心定制的介电分布并嵌入多频反馈回路的透射腔能够同时计算多个数学问题的解。我们设计、构建并测试了一种微波频率的计算结构，它能利用任意两个任意输入求解两个独立的积分方程，并且还为计算四个5×5矩阵的逆提供了数值结果。
