A state-space gradient descent algorithm with ancilla-based non-unitary updates prepares ground or metastable states of quantum Hamiltonians and is claimed to avoid barren plateaus.
Li, Quantum computers quickly find local minima, Nature Physics (2025)
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State-space gradient descent and metastability in quantum systems
A state-space gradient descent algorithm with ancilla-based non-unitary updates prepares ground or metastable states of quantum Hamiltonians and is claimed to avoid barren plateaus.