Berlin 2018 – scientific programme

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PLV: Plenarvorträge

PLV VIII

PLV VIII: Plenary Talk

Wednesday, March 14, 2018, 14:00–14:45, H 0105

Quantum photonics using van der Waals heterostructures — •Atac Imamoglu — ETH Zurich

Transition metal dichalcogenide (TMD) monolayers represent a new class of two-dimensional (2D) valley semiconductors, exhibiting features such as a valley pseudospin degree of freedom, ultra-strong Coulomb interactions and Berry curvature with novel optical signatures. Since the first experiments in 2010, exploration of the electronic and optical properties of TMD monolayers has resulted in a number of ground-breaking achievements, including the observation of valley Hall effect and many-body optical excitations termed exciton-polarons. Concurrently, there has been an impressive improvement in sample quality, culminating in observation of radiative-lifetime broadened exciton resonances and realization of an atomically thin mirror using a TMD monolayer. Most of these advances rely on unique features of 2D materials with no counterpart in conventional semiconductors such as GaAs. In this talk, I will describe novel quantum optical and many-body phenomena in van der Waals heterostructures composed of TMD monolayers, boron nitride and graphene. The emphasis will be on strong interactions between electrons and excitons or polaritons.