Engineered Silicon and Germanium for Quantum Technology
L.E.A. Stehouwer (TU Delft - BUS/Quantum Delft)
G. Scappucci – Promotor (TU Delft - QCD/Scappucci Lab)
M. Veldhorst – Promotor (TU Delft - QCD/Veldhorst Lab)
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Abstract
Quantum computers hold the promise of vastly increased computing power with expected applications in areas such as health care and the energy transition. Spin qubits in semiconductor quantum dots are a promising candidate as the building block for a large scale quantum computer, due to their small footprint, long coherence times, and compatibility with advanced semiconductor manufacturing. In this thesis we study 28Si/SiGe and Ge/SiGe heterostructures, two material platforms that have been developed to host single electron and hole spin qubits respectively. Each heterostructure is grown by chemical vapor deposition and subsequently characterised by structural and electronic measurement techniques to verify the design and development of each material platform. The first three experiments focus on the development of the Ge/SiGe heterostructure, while the last two experiments study the 28Si/SiGe heterostructure...