Quantum Circuit Structure Optimization for Quantum Reinforcement Learning

Fuente: arXiv
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Autori principali: Son, Seok Bin, Kim, Joongheon
Natura: Preprint
Pubblicazione: 2025
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author Son, Seok Bin
Kim, Joongheon
author_facet Son, Seok Bin
Kim, Joongheon
contents Reinforcement learning (RL) enables agents to learn optimal policies through environmental interaction. However, RL suffers from reduced learning efficiency due to the curse of dimensionality in high-dimensional spaces. Quantum reinforcement learning (QRL) addresses this issue by leveraging superposition and entanglement in quantum computing, allowing efficient handling of high-dimensional problems with fewer resources. QRL combines quantum neural networks (QNNs) with RL, where the parameterized quantum circuit (PQC) acts as the core computational module. The PQC performs linear and nonlinear transformations through gate operations, similar to hidden layers in classical neural networks. Previous QRL studies, however, have used fixed PQC structures based on empirical intuition without verifying their optimality. This paper proposes a QRL-NAS algorithm that integrates quantum neural architecture search (QNAS) to optimize PQC structures within QRL. Experiments demonstrate that QRL-NAS achieves higher rewards than QRL with fixed circuits, validating its effectiveness and practical utility.
format Preprint
id arxiv_https___arxiv_org_abs_2507_00589
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Quantum Circuit Structure Optimization for Quantum Reinforcement Learning
Son, Seok Bin
Kim, Joongheon
Machine Learning
Artificial Intelligence
Reinforcement learning (RL) enables agents to learn optimal policies through environmental interaction. However, RL suffers from reduced learning efficiency due to the curse of dimensionality in high-dimensional spaces. Quantum reinforcement learning (QRL) addresses this issue by leveraging superposition and entanglement in quantum computing, allowing efficient handling of high-dimensional problems with fewer resources. QRL combines quantum neural networks (QNNs) with RL, where the parameterized quantum circuit (PQC) acts as the core computational module. The PQC performs linear and nonlinear transformations through gate operations, similar to hidden layers in classical neural networks. Previous QRL studies, however, have used fixed PQC structures based on empirical intuition without verifying their optimality. This paper proposes a QRL-NAS algorithm that integrates quantum neural architecture search (QNAS) to optimize PQC structures within QRL. Experiments demonstrate that QRL-NAS achieves higher rewards than QRL with fixed circuits, validating its effectiveness and practical utility.
title Quantum Circuit Structure Optimization for Quantum Reinforcement Learning
topic Machine Learning
Artificial Intelligence
url https://arxiv.org/abs/2507.00589