Feb 14, 2019 3:45 pm - Nielsen Hall 170 - Colloquium
Tobias Grass - Joint Quantum Institute, University of Maryland, College Park
Topological Quantum Simulators

Quantum simulators can be used to prepare exotic phases of matter, to implement physical models of interest, and to study notoriously difficult quantum many-body behavior. In this colloquium, I will discuss three different realizations of a topological quantum simulator: with trapped ions, with cold atoms, and in graphene. Beauty can be found in the energy spectrum of such device, as our ion quantum simulator reproduces the famous fractal butterfly of the Hofstadter model. From the graphene-based system, which is shown to host non-Abelian Fibonacci anyons, we get a glimpse of error-free quantum computing. And by forcing the cold atoms into a regime of unconventional interactions, an exotic co-existence of topological order and symmetry-broken order is revealed. In all cases, the synthetic behavior is achieved through coherent optical control of the matter.