G. Mejia

Unflattening by Flattening -- How Input Distributions Shape Output Variance in Angle-Encoded Circuits

Barren plateaus hinder training of parameterized quantum circuits by making loss gradients exponentially small in the number of qubits. For angle-encoded product states, we show how the input distribution affects output variation through algebraic input purity, i.e. the input's overlap with the circuit's dynamical Lie...