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Researchers at QuTech in Delft have unveiled QARPET, a new chip architecture enabling efficient testing of semiconductor spin qubits. With a tiled design that allows hundreds of qubits to be evaluated simultaneously under real operational conditions, QARPET addresses key challenges in scaling quantum processors.

The prototype, using a Ge/SiGe semiconductor structure, contains a grid of tiles hosting up to 1,058 qubits with minimal control lines. This development aims to enhance the reliability and reproducibility of future quantum devices.