Today, Prof. Seigo Tarucha from the RIKEN lab and the Unviersity of Tokyo, Japan, is giving the Basel Physics Colloquium with the title "Physics and Technology of Spin-based Quantum Computing with Quantum Dots". From dots in GaAs to Si, Si/Ge and finally to isotopically purified Si spins reaching fidelities >99%... very impressive results! Thanks very much for the inspiring visit!