Mark Gregory Friesen

Title: Mark Gregory Friesen: Innovator in Quantum Dot Technology

Introduction

Mark Gregory Friesen is a prominent inventor based in Middleton, WI (US). He has made significant contributions to the field of quantum computing, particularly through his innovative work on silicon-germanium alloy-based quantum dots. With a total of 7 patents to his name, Friesen's inventions are paving the way for advancements in quantum technology.

Latest Patents

Friesen's latest patents include groundbreaking technologies such as "Silicon-germanium alloy-based quantum dots with increased alloy disorder and enhanced valley splitting." This patent describes gate-controlled quantum dots formed in a semiconductor heterostructure, where a SiGe alloy quantum well is sandwiched between SiGe alloy barriers or Ge barriers. The incorporation of germanium in these quantum dots enhances the average valley splitting, thereby increasing the yield of quantum dots suitable for device applications. Another notable patent is "Silicon-germanium heterostructures with quantum wells having oscillatory germanium concentration profiles for increased valley splitting." This invention outlines semiconductor heterostructures that include a quantum well of strained silicon with a low concentration of germanium impurities, which increases the valley splitting in the conduction band of the silicon quantum well.

Career Highlights

Throughout his career, Friesen has worked with esteemed organizations such as the Wisconsin Alumni Research Foundation and Newsouth Innovations Pty Limited. His work has significantly impacted the development of quantum computing systems, showcasing his expertise in semiconductor technology.

Collaborations

Friesen has collaborated with notable colleagues, including Mark A Eriksson and Robert J Joynt. These partnerships have further enriched his research and development efforts in the field of quantum technology.

Conclusion

Mark Gregory Friesen is a key figure in the advancement of quantum dot technology, with a focus on silicon-germanium alloys. His innovative patents and collaborations highlight his commitment to pushing the boundaries of quantum computing. His contributions are essential for the future of this rapidly evolving field.