Neuromorphic computing in Ginzburg-Landau polariton lattice systems

TL;DR

This paper explores the use of reservoir computing within Ginzburg-Landau polariton lattice systems, demonstrating potential for high-speed signal processing leveraging photonic nonlinearities.

Contribution

It introduces a novel application of reservoir computing to Ginzburg-Landau lattices, especially exciton-polariton systems, for efficient and fast information processing.

Findings

Reservoir computing can be implemented in Ginzburg-Landau lattice models.

Exciton-polariton lattices enable signal processing at rates around 1 Tbit/s.

The approach leverages photonic nonlinearity for high-speed computation.

Abstract

The availability of large amounts of data and the necessity to process it efficiently have led to rapid development of machine learning techniques. To name a few examples, artificial neural network architectures are commonly used for financial forecasting, speech and image recognition, robotics, medicine, and even research. Direct hardware for neural networks is highly sought for overcoming the von Neumann bottleneck of software implementations. Reservoir computing (RC) is a recent and increasingly popular bio-inspired computing scheme which holds promise for an efficient temporal information processing. We demonstrate the applicability and performance of reservoir computing in a general complex Ginzburg-Landau lattice model, which adequately describes dynamics of a wide class of systems, including coherent photonic devices. In particular, we propose that the concept can be readily applied in exciton-polariton lattices, which are characterized by unprecedented photonic nonlinearity, opening the way to signal processing at rates of the order of 1 Tbit (1/s).