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quant-ph2025
Absence of barren plateaus and scaling of gradients in the energy optimization of isometric tensor network states
Thomas Barthel, Qiang Miao
Vanishing gradients can pose substantial obstacles for high-dimensional optimization problems. Here we consider energy minimization problems for quantum many-body systems with exte…
quant-ph2025
Convergence and Quantum Advantage of Trotterized MERA for Strongly-Correlated Systems
Qiang Miao, Thomas Barthel
Strongly-correlated quantum many-body systems are difficult to study and simulate classically. We recently proposed a variational quantum eigensolver (VQE) based on the multiscale…