Graphene_Quantuminformationonchickenwire教程.pdfVIP

NEWS VIEWS GRAPHENE Quantum information on chicken wire The ability to build electronic structures from graphene sheets has progressed signifi cantly. Two theoretical studies suggest that graphene nanostructures could be used for quantum information processing. Vladimir Fal’ko single graphene sheet, by applying voltages is in the Physics Department of Lancaster to individual electrodes in an array of University, Lancaster LA1 4YB, UK. split gates. Such a device would of er the e-mail: v.falko@lancaster.ac.uk appealing possibility of creating electron (or hole) puddles, similar to lateral quantum raphene — the name by which dots in conventional semiconductor a single atomic sheet of graphite structures. Would this enable the spin state is known1,2 of electrons populating each puddle/dot to G — is a remarkable material. Not only is this atomically thin be controlled? And if the dots were close i lm chemically and structurally stable, enough to couple these spins by exchange but it is als