Solid state qubits with industrial CMOS technology

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日期	2023-11-06

時間	12:10-13:10

地點	理學教學新大樓物理系1F 36173會議室

領域	Quantum Information Science

講者	Ruoyu Li 博士 - Imec, Belgium

題目	Solid state qubits with industrial CMOS technology

摘要	Useful quantum computing applications require a physical qubit number beyond a million scale. Large qubit arrays need improvements in material quality and the fabrication process for good and uniform qubits, as well as layout optimization for an efficient analog control interface and qubit interconnect. Towards this end, we leverage the know-how of CMOS technology for scaling and integrate superconducting qubits and silicon spin qubits with advanced manufacturing technology. The advanced process control in a 300 mm fab can result in an ultra-clean interface and uniform performance, providing new insight into material properties, controlling circuits, and upscaling possibilities. We will discuss the potential and constraints for qubit manufacturing with an industrial fab line and take a deep dive into the spin qubit platform. Through full gate stack optimization, we achieve ultra-low charge noise environments and develop a microscopic model for the noise mechanism as well as future optimization directions. In addition to qubit fabrication, we utilize CMOS device and circuit technologies to gain a deeper understanding of the qubit device and develop novel cryogenic control protocols.

2023-11-06 12:10:00 ~ 2023-11-06 13:10:00