Tensor train optimization of parameterized quantum circuits
G. Paradezhenko*, A. Pervishko*+, D. Yudin*+
*Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
+Laboratory of Spin- Orbitronics, Institute of High Technologies and Advanced Materials,
Far Eastern Federal University, 690950 Vladivostok, Russia
Abstract
We examine a particular realization of derivative-free method
as implemented on tensor train based optimization to the variational
quantum eigensolver. As an example, we consider parameterized quantum
circuits composed of a low-depth hardware-efficient ansatz and
Hamiltonian variational ansatz for addressing the ground state of the
transverse field Ising model. We further make a comparison with gradient-based
optimization techniques and discuss on the advantage of using
tensor train based optimization, especially in the presence of noise.