Seminario: From quantum dots to artificial graphene

Giovedì 17 ottobre 2013 ore 11.00, Edificio Fisica, Aula Seminari S3 (III piano)

Relatore: Esa Räsänen (Tampere University of Technology, Finland)

Abstract:   We briefly review our recent computational studies on few-electron quantum dots, applied here as building blocks for quantum information processing and as a test platform for fundamental quantum phenomena. First, we will focus on quantum transport properties of stadium-shaped quantum dots that are shown to exhibit fractal conductance fluctuations in a qualitative agreement with experiments. Secondly, we present a realistic scheme to control coupled quantum dots with optical fields or local electric gates in an optimized fashion. Finally, the concept of a hexagonal quantum-dot lattice as "artificial graphene" is introduced. We focus on its graphene-like properties as well as on the role of electron-electron interactions affecting the stability of the Dirac point.

Ospite: Carlo Andrea Rozzi

[Ultimo aggiornamento: 16/10/2013 18:10:47]