Building globally controlled quantum processors with interactions
Phys. Rev. A 113, 012614 – Published 16 January, 2026
DOI: https://doi.org/10.1103/lz5d-lnz2
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.
