research

Ballistic graphene offers a promising platform for electron optical devices. We have developed a versatile technology that allows to suspend graphene and complement it with arbitrary bottom and top-gate structures.1 Using current annealing we demonstrated exceptional high nobilities approaching 102

This projects aims at a single electron pair source which delivers (in principle) on demand pairs of spin-entangled electrons, whereof each electron may leave the device through different arms. While similar photonic EPR sources are widely used in optics in

Carbon nanotubes (CNTs) are almost ideal one-dimensional conductors. However, potential variation caused likely by charge tarps in the substrate induced backscatering on a length scale of a few 100 nm. There are two strategies to overcome this problem: in one