Predicting Chaotic Systems with Quantum Echo-state Networks

• URL: http://arxiv.org/abs/2412.07910v1
• Date: Tue, 10 Dec 2024 20:39:16 GMT
• Title: Predicting Chaotic Systems with Quantum Echo-state Networks
• Authors: Erik Connerty, Ethan Evans, Gerasimos Angelatos, Vignesh Narayanan,
• Abstract summary: We present and examine a quantum circuit (QC) that implements and aims to improve upon the classical echo-state network (ESN) QESNs aim to reduce this need for prohibitively large reservoirs by leveraging the unique capabilities of quantum computers. We conducted simulated QC experiments on the chaotic Lorenz system, both with noisy and noiseless models, to demonstrate the circuit's performance.
• Score: 1.349950008899546
• License:
• Abstract: Recent advancements in artificial neural networks have enabled impressive tasks on classical computers, but they demand significant computational resources. While quantum computing offers potential beyond classical systems, the advantages of quantum neural networks (QNNs) remain largely unexplored. In this work, we present and examine a quantum circuit (QC) that implements and aims to improve upon the classical echo-state network (ESN), a type of reservoir-based recurrent neural networks (RNNs), using quantum computers. Typically, ESNs consist of an extremely large reservoir that learns high-dimensional embeddings, enabling prediction of complex system trajectories. Quantum echo-state networks (QESNs) aim to reduce this need for prohibitively large reservoirs by leveraging the unique capabilities of quantum computers, potentially allowing for more efficient and higher performing time-series prediction algorithms. The proposed QESN can be implemented on any digital quantum computer implementing a universal gate set, and does not require any sort of stopping or re-initialization of the circuit, allowing continuous evolution of the quantum state over long time horizons. We conducted simulated QC experiments on the chaotic Lorenz system, both with noisy and noiseless models, to demonstrate the circuit's performance and its potential for execution on noisy intermediate-scale quantum (NISQ) computers.

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