Robust measurement of wave function topology on NISQ quantum computers

Topological quantum phases of materials are defined through their topological invariants. These invariants quantities that characterize the global geometrical properties wave functions and thus immune to local noise. Here, we present a strategy measure on computers. We show our can be easily integrated with variational eigensolver (VQE) so generic many-body states characterized current hardware. demonstrate robust nature method by measuring for both non-interacting interacting models, map out phase diagrams simulators IBM