Spin-based quantum computing is a leading technology for the realization of scalable quantum computers. Semiconductor quantum dots (QDs) are used to trap individual charges and the associated spins, which are then used as qubits. The Zurich Instruments Quantum Computing Control System (QCCS) provides all the key tools for spin qubit characterization, control and readout, providing a low-noise and scalable solution that improves setup reliability and simplifies setup control.

Single spins are confined in semiconductors quantum dots. Metallic gates define them and control the relative couplings. A large quantum dot is used as a charge sensor for the smaller ones which are serving as qubits. Single qubit operations are induced through an oscillating magnetic field coupled to the qubits through microwave strip lines. Two qubits gates can be realized with fast pulses on those metallic gates which are close to two quantum dots.