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Energy Is Not Enough: Leakage-Aware Ansatz Criterion for Variational Quantum Eigensolvers

Chen, Yuan-Chieh
arXiv (OAI Expanded) · Papers
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quantum-physics
In molecular variational quantum eigensolver (VQE) calculations for a fixed electron-number sector, the projected-sector energy alone does not certify that a prepared state is physically valid. We show that a state can have zero projected-sector error while almost all of its probability mass lies ou
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