Niels Bultink (Qblox): Control Electronics Are the Hidden Bottleneck to Scale

Key takeaways

• Control electronics have to scale in lockstep with qubit count, and this hardware often gets less attention than the qubits themselves
• Crosstalk between control lines gets worse as systems grow, and managing it requires careful calibration and modular hardware design
• Getting to thousands of qubits means rethinking the control stack now, not bolting on more instruments to an architecture built for tens of qubits
• The Dutch quantum ecosystem benefits from close physical proximity between hardware makers, qubit groups, and universities, which speeds up iteration