Jan Grahn

Jan Grahn is a researcher at Chalmers University of Technology, specializing in low-noise semiconductor components. Their work focuses on pushing the sensitivity limits of transistor-based amplifiers in microwave and millimeter wave ranges, with applications in quantum computing, radio astronomy, and climate satellite technology. Grahn also contributes to education by teaching Electrical Circuits and Systems at Technical Physics and offering a doctoral course on High-Speed Transistors biennially.

Research Highlights:

• Development of high-electron-mobility transistors (HEMT) with noise levels near the quantum limit
• Expertise in materials science, transistor technology, and electrical modeling
• Co-founded Low Noise Factory AB to commercialize amplifier products for global quantum research groups

Impact Areas:

• Quantum computers
• Radio astronomy
• Climate satellite systems