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arXiv · 2608.06711

Conditions for Quantum Advantage in AC Power Flow

Parikshit Pareek·Abhijith Jayakumar·Carleton Coffrin·Sidhant Misra
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Abstract

This paper aims to contextualize the requirements for Quantum Computing (QC) algorithms to achieve a quantum advantage in solving the alternating current power flow (ACPF) problem, with a focus on runtime complexity. First, we establish a benchmark for a QC iterative solver to demonstrate an advantage over the classical Newton-Raphson Load Flow (NRLF) algorithm. Next, we derive a baseline expression for the end-to-end runtime complexity of any Gate-based QC algorithm as $\Omega(N \kappa/\varepsilon),$ reflecting dependence on system size $N$, condition number $\kappa$, and error tolerance $\varepsilon$. Finally, we highlight key areas where QC algorithms may offer potential benefits over NRLF in addressing the standard ACPF problem.

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Parikshit Pareek, Abhijith Jayakumar, Carleton Coffrin, Sidhant Misra. 2026-08-07. Conditions for Quantum Advantage in AC Power Flow. https://arxiv.org/abs/2608.06711

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