Fermion mappings combined with Z2 tapering and frozen-core approximations reduce qubit counts by up to 50%, gate counts by up to 27.5x, and Pauli strings by up to 2.75x for VQE on small molecules.
Ceriotti , author W
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Tree tensor network states combined with DMRG allow accurate full-dimensional computations of thousands of vibrational eigenstates for molecules ranging from small benchmarks to 33-dimensional protonated water clusters.
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Resource Estimation for VQE on Small Molecules: Impact of Fermion Mappings and Hamiltonian Reductions
Fermion mappings combined with Z2 tapering and frozen-core approximations reduce qubit counts by up to 50%, gate counts by up to 27.5x, and Pauli strings by up to 2.75x for VQE on small molecules.
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Accurate, full-dimensional computations of thousands of complex vibrational eigenstates with tree tensor network states
Tree tensor network states combined with DMRG allow accurate full-dimensional computations of thousands of vibrational eigenstates for molecules ranging from small benchmarks to 33-dimensional protonated water clusters.