Programmable wave-based analog computing machine: a metastructure that designs metastructures
arXiv:2301.02850 · doi:10.1038/s41467-025-56019-1
Abstract
The ability to perform mathematical computations using metastructures is an emergent paradigm that carries the potential of wave-based analog computing to the realm of near-speed-of-light, low-loss, compact devices. We theoretically introduce and experimentally verify the concept of a reconfigurable metastructure that performs analog complex mathematical computations using electromagnetic waves. Reconfigurable, RF-based components endow our device with the ability to perform stationary and non-stationary iterative algorithms. After demonstrating matrix inversion (stationary problem), we use the machine to tackle two major non-stationary problems: root finding with Newton's method and inverse design (constrained optimization) via the Lagrange multiplier method. The platform enables possible avenues for wave-based, analog computations for general linear algebraic problems and beyond in compact, ultrafast, and parallelized ways.
arXiv comment18 pages, 3 figures, supp material, 15 pages
References in corpus (15)
- All-Optical Machine Learning Using Diffractive Deep Neural Networks
- Parallel convolution processing using an integrated photonic tensor core
- Outlook for inverse design in nanophotonics
- The discrete dipole approximation: an overview and recent developments
- Single-chip photonic deep neural network for instantaneous image classification
- Mixed-Precision In-Memory Computing
- Self-Configuring Universal Linear Optical Component
- Wave Physics as an Analog Recurrent Neural Network
- High-index dielectric metasurfaces performing mathematical operations
- Scalable Optical Learning Operator
- Femtojoule, femtosecond all-optical switching in lithium niobate nanophotonics
- Inverse-designed low-index-contrast structures on silicon photonics platform for vector-matrix multiplication
- Turning Optical Complex Media into Universal Reconfigurable Linear Operators by Wavefront Shaping
- Customized anti-reflection structure for perfect transmission through complex media
- Matrix Completion in Colocated MIMO Radar: Recoverability, Bounds & Theoretical Guarantees