Researchers at QuTech in Delft, The Netherlands, have developed a new chip architecture that could make it easier to test and scale up quantum processors based on semiconductor spin qubits. The platform, called QARPET (Qubit-Array Research Platform for Engineering and Testing) and reported in Nature Electronics, allows hundreds of qubits to be characterized within the same test-chip under the same operating conditions used in quantum computing experiments.

“With such a complex, tightly packed quantum chip, things really start to resemble the traditional semiconductor industry,” states researcher Giordano Scappucci.

When viewed under a microscope, the structure of the QARPET chip appears almost woven. Fabrication was in fact a stress test for engineering capabilities.