A Parameter-Efficient Quantum Anomaly Detection Method on a Superconducting Quantum Processor

• URL: http://arxiv.org/abs/2412.16867v2
• Date: Tue, 14 Jan 2025 22:01:02 GMT
• Title: A Parameter-Efficient Quantum Anomaly Detection Method on a Superconducting Quantum Processor
• Authors: Maida Wang, Jinyang Jiang, Peter V. Coveney,
• Abstract summary: We propose a novel quantum machine learning method, called Quantum Support Vector Data Description (QSVDD) QSVDD aims to achieve both parameter efficiency and superior accuracy compared to classical models. We demonstrate the first implementation of a quantum anomaly detection method for general image datasets on a superconducting quantum processor.
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• Abstract: Quantum machine learning has gained attention for its potential to address computational challenges. However, whether those algorithms can effectively solve practical problems and outperform their classical counterparts, especially on current quantum hardware, remains a critical question. In this work, we propose a novel quantum machine learning method, called Quantum Support Vector Data Description (QSVDD), for practical image anomaly detection, which aims to achieve both parameter efficiency and superior accuracy compared to classical models. Emulation results indicate that QSVDD demonstrates favourable recognition capabilities compared to classical baselines, achieving an average accuracy of over 90% on benchmarks with significantly fewer trainable parameters. Theoretical analysis confirms that QSVDD has a comparable expressivity to classical counterparts while requiring only a fraction of the parameters. Furthermore, we demonstrate the first implementation of a quantum anomaly detection method for general image datasets on a superconducting quantum processor. Specifically, we achieve an accuracy of over 80% with only 16 parameters on the device, providing initial evidence of QSVDD's practical viability in the noisy intermediate-scale quantum era and highlighting its significant reduction in parameter requirements.

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