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Implementing Any Nonlinear Quantum Neuron
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DOI：10.1109/TNNLS.2019.2938899.png)
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Abstract
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The ability of artificial neural networks (ANNs) to adapt to input data and perform generalizations is intimately connected to the use of nonlinear activation and propagation functions. Quantum versions of ANN have been proposed to take advantage of the possible supremacy of quantum over classical computing. To date, all proposals faced the difficulty of implementing nonlinear activation functions since quantum operators are linear. This brief presents an architecture to simulate the computation of an arbitrary nonlinear function as a quantum circuit. This computation is performed on the phase of an adequately designed quantum state, and quantum phase estimation recovers the result, given a fixed precision, in a circuit with linear complexity in function of ANN input size.
Keywords:
Qubit
Neurons
Registers
Integrated circuit modeling
Computational modeling
Biological neural networks
Quantum computing
quantum Fourier transform (QFT)
quantum neural networks
quantum neuron
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