Measurement optimization in the variational quantum eigensolver using a minimum clique cover
Measurement optimization in the variational quantum eigensolver using a minimum clique cover
Solving the electronic structure problem using the Variational Quantum Eigensolver (VQE) technique involves measurement of the Hamiltonian expectation value. Current hardware can perform only projective single-qubit measurements, and thus, the Hamiltonian expectation value is obtained by measuring parts of the Hamiltonian rather than the full Hamiltonian. This restriction makes the …