Graphene quantum dot may solve some quantum computing problems

Around the world, many scientists are working on various models of a quantum computer. One of the proposed models is a quantum computer that makes use of electron spins. And while quantum dots in gallium arsenide have been used to accomplish the first steps in this direction, there are certain problems that come with a spin-based quantum computer that uses gallium arsenide. Klaus Ensslin, a scientist at the Solid State Physics Laboratory in Zurich, believes that he and his colleagues may have found a new approach.