A tangent space excitation ansatz for parametrized quantum circuits captures low-energy single-particle states by increasing depth by one layer around the variational optimum, yielding more excited states and higher accuracy than prior quantum methods at comparable cost.
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Tangent Space Excitation Ansatz for Quantum Circuits
A tangent space excitation ansatz for parametrized quantum circuits captures low-energy single-particle states by increasing depth by one layer around the variational optimum, yielding more excited states and higher accuracy than prior quantum methods at comparable cost.