Qdev seminar by Andrew Higginbotham, IST Austria

"0,1,…,N: Exploring superconductor-semiconductor hybrids by adding Josephson junctions"

We are employing circuit quantum electrodynamics, the architecture of superconducting quantum computing, to explore the physics and technology of superconductor-semiconductor hybrid systems.

Our experimental program is to study the behavior of small circuits and successively add Josephson junctions.

I will present our studies of induced superconductivity with zero junctions, our demonstration of the first semiconductor-based quantum limited amplifier with one junction, and prospects for stabilizing unusual phases with arrays of junctions.