LAUSR

Quantum computers promise to solve problems that are intractable on classical computers. Advances in their capabilities rely largely on the quantum bits (qubits) that make up their fundamental units of information. One particularly attractive platform is spin qubits, which store information in the spin of the charge carriers in semiconductor quantum dots. These qubits have inherent similarities to classical transistors, which can be integrated by the billions into silicon chips. This system therefore has good prospects for using the vast knowledge in the advanced semiconductor manufacturing industry to scale up to the size needed for practical applications. Many of the architectures proposed for such scaling require the qubits to be interconnected along two dimensions. However, all of the demonstrations so far have been restricted to two-qubit systems.