Nonlinear Quantum Neuron: A Fundamental Building Block for Quantum Neural Networks

• URL: http://arxiv.org/abs/2011.03429v1
• Date: Fri, 6 Nov 2020 15:25:52 GMT
• Title: Nonlinear Quantum Neuron: A Fundamental Building Block for Quantum Neural Networks
• Authors: Shilu Yan, Hongsheng Qi, and Wei Cui
• Abstract summary: Quantum computing enables quantum neural networks (QNNs) to have great potentials to surpass artificial neural networks (ANNs) Various models related to QNNs have been developed, but they are facing the challenge of merging the nonlinear, dissipative dynamics of neural computing into the linear, unitary quantum system. We establish different quantum circuits to approximate nonlinear functions and then propose a generalizable framework to realize any nonlinear quantum neuron.
• Score: 5.067768639196139
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum computing enables quantum neural networks (QNNs) to have great potentials to surpass artificial neural networks (ANNs). The powerful generalization of neural networks is attributed to nonlinear activation functions. Although various models related to QNNs have been developed, they are facing the challenge of merging the nonlinear, dissipative dynamics of neural computing into the linear, unitary quantum system. In this paper, we establish different quantum circuits to approximate nonlinear functions and then propose a generalizable framework to realize any nonlinear quantum neuron. We present two quantum neuron examples based on the proposed framework. The quantum resources required to construct a single quantum neuron are the polynomial, in function of the input size. Finally, both IBM Quantum Experience results and numerical simulations illustrate the effectiveness of the proposed framework.

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