Expressivity of quantum neural networks

In this work, we address the question whether a sufficiently deep quantum neural network can approximate a target function as accurate as possible. We start with typical physical situations that the target functions are physical observables, and then we extend our discussion to situations that the l...

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Bibliographic Details
Main Authors: Yadong Wu, Juan Yao, Pengfei Zhang, Hui Zhai
Format: Article
Language:English
Published: American Physical Society 2021-08-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.3.L032049