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arXiv · 2606.19035

Scalable quantum circuit knitting using a weak-coupling approximation

John P. T. Stenger·Daniel Gunlycke·Nikos Chrisochoides
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Abstract

We present a method for performing distributed quantum computing with controlled approximations. Exact distributed quantum computing requires exponential classical information to reconstruct the quantum process. However, we show how the classical cost is reduced to polynomial if the quantum procedure can be partitioned between a qubit that is weakly coupled the other qubits. We demonstrate our method for a layered circuit based on the circuits used for the quantum approximate optimization algorithm.

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John P. T. Stenger, Daniel Gunlycke, Nikos Chrisochoides. 2026-06-17. Scalable quantum circuit knitting using a weak-coupling approximation. https://arxiv.org/abs/2606.19035

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