  We propose an ansatz quantum circuit for the variational quantum eigensolver
(VQE), suitable for exploring the phase structure of the multi-flavor Schwinger
model in the presence of a chemical potential. Our ansatz is capable of
incorporating relevant model symmetries via constrains on the parameters, and
can be implemented on circuit-based as well as measurement-based quantum
devices. We show via classical simulation of the VQE that our ansatz is able to
capture the phase structure of the model, and can approximate the ground state
to a high level of accuracy. Moreover, we perform proof-of-principle
simulations on superconducting, gate-based quantum hardware. Our results show
that our approach is suitable for current gate-based quantum devices, and can
be readily implemented on measurement-based quantum devices once available.
