2 research outputs found
Few-qubit quantum-classical simulation of strongly correlated lattice fermions
We study a proof-of-principle example of the recently proposed hybrid
quantum-classical simulation of strongly correlated fermion models in the
thermodynamic limit. In a "two-site" dynamical mean-field theory (DMFT)
approach we reduce the Hubbard model to an effective impurity model subject to
self-consistency conditions. The resulting minimal two-site representation of
the non-linear hybrid setup involves four qubits implementing the impurity
problem, plus an ancilla qubit on which all measurements are performed. We
outline a possible implementation with superconducting circuits feasible with
near-future technology.Comment: 20 pages, 10 figure