High-level control of spin qubits on an array with 12 quantum dots

Quantum computing promises to tackle exciting and computationally challenging problems. Intel is leveraging 50 years of semiconductor manufacturing experience to develop silicon-based spin qubit devices. Quantum chips are produced on the same advanced 300 mm semiconductor processing line as Intel’s next generation of computing technology. Owing to great process control and reliability, thousands of quantum devices are produced every week. With newly developed low-temperature wafer-scale characterization and measurement tools, statistically significant fabrication feedback is generated. This feedback enabled the development of high-quality 12-quantum dot samples that can be brought into the 1/1/…./1 electron occupation. After subjecting these electrons to a magnetic field, their degeneracy-lifted spin states are used as the qubit states. Single- and two-qubit gates are performed by electrically driving the spin resonance and voltage-pulsing the electrostatic barrier between qubits, respectively. Pauli spin blockade facilitates fast and high-fidelity readout of qubits. Control of the quantum chip is orchestrated with in-house built software and control electronics and is set up in a way that allows incorporation with the full algorithmic stack.

In this talk, we will give an overview of the above-mentioned aspects of the Intel quantum computing system, with a focus on high-level qubit control.