This project, "CMOS-compatible Quantum Processor with silicon-based Spin Qubits and Cryo-CMOS Integrated System," aims to advance quantum technology by leveraging manufacturing and design technologies established within Taiwan's semiconductor industry. The project focuses on CMOS-compatible spin qubits as its core technology and seeks to develop the peripheral cryogenic CMOS system as an integrated system. Spin qubits offer long coherence times and seamless compatibility with Taiwan’s semiconductor and electronic industries. The key goals include integrating these qubits with cryogenic CMOS circuits in an integrated design. 

In collaboration with TSRI, we developed an 8-inch, fully CMOS-compatible 28Si process line to fabricate FinFET-based qubits. Leveraging SiGe/Ge quantum dots, coherent spin qubit control was successfully demonstrated in Taiwan for the first time. Furthermore, a miniaturized CMOS low-noise amplifier was developed, achieving a noise temperature of 2.2 K with a compact footprint of 0.018 mm², representing one of the best reported performances to date.

The global race to achieve quantum computing advantage represents the next frontier in computing and technological excellence. Quantum processors have shown the ability to surpass classical supercomputers and solve problems previously considered intractable, such as prime number factorization, chemical and molecular simulations, and portfolio optimization. This project, by leveraging  from Taiwan’s most advantageous industries, aims to develop an integrated quantum processor with spin qubits and cryocmos. Integrating these systems will eliminate the interface bottlenecks that currently hinder the scaling of quantum processors toward a universal quantum computer. t