Toward Scalable Quantum Hardware: Integrating Spin Qubits with Cryogenic Control and Thermal Management

Semiconductor-based quantum computing is a promising approach for realizing large-scale quantum information processing. While proof-of-principle spin qubit devices have demonstrated high-fidelity operation, the transition toward more scalable architectures faces substantial challenges in both, control and thermal management. To reduce wiring complexity, it is essential to integrate control electronics operating close to the qubits at the cryogenic stage. However, this proximity introduces new sources of heat that threaten qubit performance. At the same time, novel materials and device concepts for thermal insulation and interconnects are required to maintain qubit stability as system complexity grows. In this talk, we present our recent advances in addressing these challenges, drawing on ongoing experiments that combine cryogenic control electronics with spin qubit devices as well as experimental studies of thermal management. These investigations highlight potential pathways to scalable quantum hardware. We outline how insights from our experiments contribute to the broader effort of enabling large-scale, integrated quantum processors.