Experimental Machine Learning with Classical and Quantum Data via NMR Quantum Kernels

• URL: http://arxiv.org/abs/2412.09557v1
• Date: Thu, 12 Dec 2024 18:44:38 GMT
• Title: Experimental Machine Learning with Classical and Quantum Data via NMR Quantum Kernels
• Authors: Vivek Sabarad, T. S. Mahesh,
• Abstract summary: We implement quantum kernels on a 10-qubit star-topology register in a nuclear magnetic resonance (NMR) platform. We experimentally encode classical data in the evolution of multiple quantum coherence orders. We show that quantum kernels exhibit strong capabilities in classical as well as quantum machine learning tasks.
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• Abstract: Kernel methods map data into high-dimensional spaces, enabling linear algorithms to learn nonlinear functions without explicitly storing the feature vectors. Quantum kernel methods promise efficient learning by encoding feature maps into exponentially large Hilbert spaces inherent in quantum systems. In this work we implement quantum kernels on a 10-qubit star-topology register in a nuclear magnetic resonance (NMR) platform. We experimentally encode classical data in the evolution of multiple quantum coherence orders using data-dependent unitary transformations and then demonstrate one-dimensional regression and two-dimensional classification tasks. By extending the register to a double-layered star configuration, we propose an extended quantum kernel to handle non-parametrized operator inputs. By numerically simulating the extended quantum kernel, we show classification of entangling and nonentangling unitaries. These results confirm that quantum kernels exhibit strong capabilities in classical as well as quantum machine learning tasks.

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