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- W4283316469 abstract "Barren plateaus appear to be a major obstacle to using variational quantum algorithms to simulate large-scale quantum systems or replace traditional machine learning algorithms. They can be caused by multiple factors such as expressivity, entanglement, locality of observables, or even hardware noise. We propose classical splitting of ansatze or parametrized quantum circuits to avoid barren plateaus. Classical splitting is realized by splitting an $N$ qubit ansatz to multiple ansatze that consists of $mathcal{O}(log N)$ qubits. We show that such an ansatz can be used to avoid barren plateaus. We support our results with numerical experiments and perform binary classification on classical and quantum datasets. Then, we propose an extension of the ansatz that is compatible with variational quantum simulations. Finally, we discuss a speed-up for gradient-based optimization and hardware implementation, robustness against noise and parallelization, making classical splitting an ideal tool for noisy intermediate scale quantum (NISQ) applications." @default.
- W4283316469 created "2022-06-24" @default.
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- W4283316469 date "2022-06-20" @default.
- W4283316469 modified "2023-09-27" @default.
- W4283316469 title "Classical Splitting of Parametrized Quantum Circuits" @default.
- W4283316469 doi "https://doi.org/10.48550/arxiv.2206.09641" @default.
- W4283316469 hasPublicationYear "2022" @default.
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