Training embedding quantum kernels with data re-uploading quantum neural networks

• URL: http://arxiv.org/abs/2401.04642v1
• Date: Tue, 9 Jan 2024 16:08:32 GMT
• Title: Training embedding quantum kernels with data re-uploading quantum neural networks
• Authors: Pablo Rodriguez-Grasa, Yue Ban, Mikel Sanz
• Abstract summary: Kernel methods play a crucial role in machine learning and the Embedding Quantum Kernels (EQKs) have shown very promising performance. We propose a $p$-qubit Quantum Neural Network (QNN) based on data re-uploading to identify the optimal $q$-qubit EQK for a task.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Kernel methods play a crucial role in machine learning and the Embedding Quantum Kernels (EQKs), an extension to quantum systems, have shown very promising performance. However, choosing the right embedding for EQKs is challenging. We address this by proposing a $p$-qubit Quantum Neural Network (QNN) based on data re-uploading to identify the optimal $q$-qubit EQK for a task ($p$-to-$q$). This method requires constructing the kernel matrix only once, offering improved efficiency. In particular, we focus on two cases: $n$-to-$n$, where we propose a scalable approach to train an $n$-qubit QNN, and $1$-to-$n$, demonstrating that the training of a single-qubit QNN can be leveraged to construct powerful EQKs.

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