A new VQE measurement protocol using hard-core bosonic approximations and iterative residual estimation reduces measurement counts and circuit depth by 30-80% for molecular systems.
⟨Ψ| H |Ψ⟩ ≈ X Rk∈R ⟨Ψ| R† k ˜H Rk HCBRk |Ψ⟩ (21) The crucial point of the method is that an accurate approximation is bound to a correct choice of the or- bital rotations
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State Specific Measurement Protocols for the Variational Quantum Eigensolver
A new VQE measurement protocol using hard-core bosonic approximations and iterative residual estimation reduces measurement counts and circuit depth by 30-80% for molecular systems.