Quantum Phase Recognition using Quantum Tensor Networks

• URL: http://arxiv.org/abs/2212.06207v1
• Date: Mon, 12 Dec 2022 19:29:07 GMT
• Title: Quantum Phase Recognition using Quantum Tensor Networks
• Authors: Shweta Sahoo, Utkarsh Azad and Harjinder Singh
• Abstract summary: This paper examines a quantum machine learning approach based on shallow variational ansatz inspired by tensor networks for supervised learning tasks. We are able to reach $geq 98%$ test-set accuracies with both multi-scale entanglement renormalization ansatz (MERA) and tree tensor network (TTN) inspired parametrized quantum circuits.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Machine learning (ML) has recently facilitated many advances in solving problems related to many-body physical systems. Given the intrinsic quantum nature of these problems, it is natural to speculate that quantum-enhanced machine learning will enable us to unveil even greater details than we currently have. With this motivation, this paper examines a quantum machine learning approach based on shallow variational ansatz inspired by tensor networks for supervised learning tasks. In particular, we first look at the standard image classification tasks using the Fashion-MNIST dataset and study the effect of repeating tensor network layers on ansatz's expressibility and performance. Finally, we use this strategy to tackle the problem of quantum phase recognition for the transverse-field Ising and Heisenberg spin models in one and two dimensions, where we were able to reach $\geq 98\%$ test-set accuracies with both multi-scale entanglement renormalization ansatz (MERA) and tree tensor network (TTN) inspired parametrized quantum circuits.

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