Author

Meghal Gupta

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Preprint Sep 2026

QAC0 Can Prepare Every Logarithmic-Qubit State

$\mathsf{QAC}^0$ is the class of constant-depth $\mathrm{poly}(n)$-ancilla circuits obtained by extending $\mathsf{QNC}^0$, the class of local circuits, to include nonlocal interactions via arbitrary width Toffoli gates. It is believed to be weaker than its counterpart, $\mathsf{QNC}^0_f$, obtained by including arbitra...

Lucas Gretta, Meghal Gupta, M. Joshi · 2 citations · ⚡1