Practical Realization of a Topological Quantum Computer
The Magic of Atomically Thin Crystals
Once in a while, a discovery comes along that opens up uncharted paths of inquiry. The discovery of atomically thin crystals, starting with graphene and followed up with dozens in the van der Waals family of compounds, has changed the way we think about materials. This new class of designer materials is making it possible to tune and control electronic properties without changing chemical composition, through alternative means such as superposing different layers, misaligning them, inducing strain, etc. In this talk I will describe highlights from this rapidly evolving field, from its serendipitous inception, to the discovery of correlated electron phases in buckled and twisted layers.
1. G. Li et al Observation of Van Hove singularities in twisted graphene layers, Nature Physics 6, 109 (2009)
2. J. Mao et al, Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices, Nature 584, 215 (2020)
3. S.Wu, Z. Zhang, K. Watanabe, T. Taniguchi, E.Y. Andrei, Chern Insulators and Topological Flat-bands in Magic-angle Twisted Bilayer Graphene , Nature Materials 20, 488 (2021)
The String Landscape and the Swampland