Bose-Hubbard model with a single qubit
The use of a single-qubit parametrized circuit as an Ansatz for the
variational wave function in the calculation of the ground state energy of a
quantum many-body system is demonstrated using the one-dimensional Bose-Hubbard
model. Comparison is made to calculations where a classic neural network is
used to generate the variational wave function. Computations carried out on IBM
Quantum hardware are also presented.
R. M. Woloshyn