IQPE with a single Slater determinant reproduces exact ground-state energies for the Hubbard model on a six-site graphene hexagon in noiseless simulation, while hardware noise limits accuracy on current IBM devices.
This unitary evolution can be approximated using techniques like Trotterization [55], which breaks down the exponential of the Hamiltonian into a sequence of gates
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Quantum simulation of the Hubbard model on a graphene hexagon: Strengths of IQPE and noise constraints
IQPE with a single Slater determinant reproduces exact ground-state energies for the Hubbard model on a six-site graphene hexagon in noiseless simulation, while hardware noise limits accuracy on current IBM devices.