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arXiv · 2509.09271

Building globally controlled quantum processors with ZZ interactions

Roberto Menta·Francesco Cioni·Riccardo Aiudi·Francesco Caravelli·Marco Polini·Vittorio Giovannetti
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Abstract

We present a comprehensive framework for constructing various architectures of globally driven quantum computers, with a focus on superconducting qubits. Our approach leverages static inhomogeneities in the Rabi frequencies of qubits controlled by a common classical pulse -- a technique we refer to as the "crossed-qubit" method. We detail the essential components and design principles required to realize such systems, highlighting how global control can be harnessed to perform local operations, enabling universal quantum computation. This framework offers a scalable pathway toward quantum processors by striking a balance between wiring complexity and computational efficiency, with potential applications in addressing current challenges to scalability.

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Roberto Menta, Francesco Cioni, Riccardo Aiudi, Francesco Caravelli, Marco Polini, Vittorio Giovannetti. 2025-09-11. Building globally controlled quantum processors with ZZ interactions. https://doi.org/10.1103/lz5d-lnz2

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