Related papers: Beyond Barren Plateaus: A Scalable Quantum Convolutional Architecture for High-Fidelity Image Classification

Beyond Barren Plateaus: A Scalable Quantum Convolutional Architecture for High-Fidelity Image Classification

URL: http://arxiv.org/abs/2603.11131v1
Date: Wed, 11 Mar 2026 15:57:42 GMT
Title: Beyond Barren Plateaus: A Scalable Quantum Convolutional Architecture for High-Fidelity Image Classification
Abstract summary: Quantum Convolutional Neural Networks (QCNNs) offer a theoretical paradigm for quantum machine learning.<n>However, implementation is bottlenecked by barren plateaus -- the exponential vanishing of gradients -- and poor empirical accuracy.<n>We propose a novel QCNN architecture utilizing localized cost functions and a hardware-efficient tensor-network.<n>We evaluate our scalable QCNN on the MNIST dataset, demonstrating a significant performance leap.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: While Quantum Convolutional Neural Networks (QCNNs) offer a theoretical paradigm for quantum machine learning, their practical implementation is severely bottlenecked by barren plateaus -- the exponential vanishing of gradients -- and poor empirical accuracy compared to classical counterparts. In this work, we propose a novel QCNN architecture utilizing localized cost functions and a hardware-efficient tensor-network initialization strategy to provably mitigate barren plateaus. We evaluate our scalable QCNN on the MNIST dataset, demonstrating a significant performance leap. By resolving the gradient vanishing issue, our optimized QCNN achieves a classification accuracy of 98.7\%, a substantial improvement over the baseline QCNN accuracy of 52.32\% found in unmitigated models. Furthermore, we provide empirical evidence of a parameter-efficiency advantage, requiring $\mathcal{O}(\log N)$ fewer trainable parameters than equivalent classical CNNs to achieve $>95\%$ convergence. This work bridges the gap between theoretical quantum utility and practical application, providing a scalable framework for quantum computer vision tasks without succumbing to loss landscape concentration.

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