Quantum Circuit Structure Learning

ABSTRACT

We propose an efficient method for simultaneously learning both the structure and parameter values of quantum circuits with only a small computational overhead. Shallow circuits trained using structure learning perform significantly better than circuits trained using parameter updates alone, making this method particularly suitable for use on noisy intermediate-scale quantum computers. We demonstrate the method for training a variational quantum eigensolver for finding the ground states of Lithium Hydride and the Heisenberg model.

Mateusz Ostaszewski, Edward Grant, Marcello Benedetti

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